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SAMA5D27 SOM1 SAMA5D27 MPU, 1Gbit (128MB) DDR2 SDRAM, 10/100 Ethernet PHY, 64Mbit (8MB) Flash, Power Management IC, 1Kbit EEPROM Introduction The Microchip SAMA5D27 SOM1 is a small single-sided System-On-Module (SOM) based on the high- performance System-in-Package 32-bit Arm ® Cortex ® -A5 processor-based MPU SAMA5D27 and 1Gb DDR2 SDRAM running up to 500 MHz. The SAMA5D27 SOM1 is built on a common set of proven Microchip components to reduce time to market by simplifying hardware design and software development. The SOM also limits design rules of the main application board, reducing overall PCB complexity and cost. The SAMA5D27 SOM1 is delivered with a free Linux distribution and bare metal C examples. Figure 1. SAMA5D27 SOM1 Features System-In-Package (SAMA5D27C-D1G-CU) including: Arm Cortex-A5 processor-based SAMA5D2 MPU 1Gbit DDR2 SDRAM On-Board Power Management Unit (MIC2800-G1JJYML) 1Kb Serial EEPROM with EUI-48 Node Identity (24AA02E48T-I/OT) © 2017 Microchip Technology Inc. Datasheet DS60001521A-page 1

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  • SAMA5D27 SOM1 SAMA5D27 MPU, 1Gbit (128MB) DDR2 SDRAM, 10/100

    Ethernet PHY, 64Mbit (8MB) Flash, Power Management IC,1Kbit EEPROM

    Introduction

    The Microchip SAMA5D27 SOM1 is a small single-sided System-On-Module (SOM) based on the high-performance System-in-Package 32-bit Arm Cortex-A5 processor-based MPU SAMA5D27 and 1GbDDR2 SDRAM running up to 500 MHz.

    The SAMA5D27 SOM1 is built on a common set of proven Microchip components to reduce time tomarket by simplifying hardware design and software development.

    The SOM also limits design rules of the main application board, reducing overall PCB complexity andcost. The SAMA5D27 SOM1 is delivered with a free Linux distribution and bare metal C examples.

    Figure 1.SAMA5D27 SOM1

    Features

    System-In-Package (SAMA5D27C-D1G-CU) including: Arm Cortex-A5 processor-based SAMA5D2 MPU 1Gbit DDR2 SDRAM

    On-Board Power Management Unit (MIC2800-G1JJYML) 1Kb Serial EEPROM with EUI-48 Node Identity (24AA02E48T-I/OT)

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 1

  • 64Mb Serial Quad I/O Flash Memory (SST26VF064BT-104I/MF) 10Base-T/100Base-TX Ethernet PHY (KSZ8081RNAIA) 40 x 38 mm Module, Pitch 0.8mm, solderable by hand 103 I/Os Up to 7 Tampers One USB Device, one USB Host and one HSIC Interface Shutdown and Reset Control Pins Independent Power Supplies Available for Camera Sensor, for SD Card and for Backup depending on

    Voltage Domains Operational Specifications:

    Main operating voltage: 3.3V 5% Temperature range: -40C to 85C Integrated crystals, internal voltage regulators Multiple interfaces and I/Os for easy application development

    Applications

    Industrial Applications Motor Control Human Machine Interface Home Automation

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 2

  • Table of Contents

    Introduction......................................................................................................................1

    Features.......................................................................................................................... 1

    Applications..................................................................................................................... 2

    1. Description.................................................................................................................5

    2. Reference Documents...............................................................................................6

    3. Block Diagram........................................................................................................... 7

    4. Pinout........................................................................................................................ 84.1. Pinout Overview........................................................................................................................... 84.2. Pin List .........................................................................................................................................9

    5. Functional Description............................................................................................. 165.1. SAMA5D27 System-In-Package................................................................................................ 165.2. Power Supplies.......................................................................................................................... 185.3. System Control...........................................................................................................................185.4. Ethernet PHY............................................................................................................................. 195.5. QSPI Memory.............................................................................................................................205.6. EEPROM Memory......................................................................................................................21

    6. Power Supply Connections and Timing Sequences................................................236.1. Power Supply Configuration #1..................................................................................................236.2. Power Supply Configuration #2..................................................................................................246.3. Power Supply Configuration #3..................................................................................................266.4. Power Supply Configuration #4..................................................................................................27

    7. Booting Guidelines.................................................................................................. 307.1. Boot Process..............................................................................................................................307.2. Boot Configuration......................................................................................................................307.3. NVM Programming.....................................................................................................................317.4. Boot From External Memory...................................................................................................... 31

    8. Debug Considerations............................................................................................. 33

    9. Electrical Characteristics......................................................................................... 349.1. Absolute Maximum Ratings........................................................................................................349.2. Operational Characteristics........................................................................................................349.3. DC Electrical Characteristics......................................................................................................35

    10. Mechanical Characteristics......................................................................................3710.1. Module Dimensions....................................................................................................................3710.2. Module Land Pattern..................................................................................................................38

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 3

  • 11. Reflow Profile.......................................................................................................... 40

    12. Ordering Information................................................................................................41

    13. Revision History.......................................................................................................42

    The Microchip Web Site................................................................................................ 43

    Customer Change Notification Service..........................................................................43

    Customer Support......................................................................................................... 43

    Product Identification System........................................................................................44

    Microchip Devices Code Protection Feature................................................................. 44

    Legal Notice...................................................................................................................44

    Trademarks................................................................................................................... 45

    Quality Management System Certified by DNV.............................................................45

    Worldwide Sales and Service........................................................................................46

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 4

  • 1. DescriptionThe SAMA5D27 SOM1 is a high-performance System-On-Module based on the 32-bit ARM Cortex-A5RISC SAMA5D2 processor. The SAMA5D27 SOM1 is certified for industrial operating conditions over a-40 to 85C temperature range.

    The system of the SAMA5D27 SOM1 operates at a maximum CPU operating frequency of 500 MHz anda maximum bus speed of 166 MHz. It features up to:

    1 Gbit of DDR2 SDRAM memory (SAMA5D27C-D1G-CU) 1 Kb of EEPROM memory (24AA02E48T-I/OT) with EUI-48 64 Mb of QSPI Flash (SST26VF064BT-104I/MF) memory

    The SAMA5D27 SOM1 is a 176-pin, 0.8mm pad pitch module with a 40mm x 38mm size.

    The SAMA5D27 SOM1 offers an extensive peripheral set, including High-speed USB Host and Device,HSIC Interface, 10Base-T/100Base-TX Ethernet Interface, system control and up to 103 I/Os featuring:

    Up to 4 UARTS Up to 4 Flexcoms Up to 6 Capactive Touch lines for up to 9 touch buttons Up to 4 ADC Inputs Up to 2 CAN Up to 7 Tamper Pins Serial Interfaces such as SPI, TWI, QSPI, SSC and IS SD/MMC, eMMC, SDIO Interfaces Up to 24-bit LCD RGB Interface CMOS Camera Interface Mono PDMIC and Full-Bridge Class-D Stereo

    Tip: Each I/O of the SAMA5D27 SOM1 is configurable, as either a general-purpose I/O lineonly, or as an I/O line multiplexed with up to six peripheral I/Os. As the multiplexing is hardware-defined, the hardware designer and programmer must carefully determine the configuration ofthe PIO Controllers required by their application.

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 5

  • 2. Reference DocumentsThe SAMA5D27 SOM1 is equipped with various Microchip silicon devices. The relevant documentation islisted in the table below.

    Type Document Title Available Ref. No./Product

    Datasheet SAMA5D2 www.microchip.com/SAMA5D2 DS60001476

    Datasheet SAMA5D2 System-In-Package(SIP)www.microchip.com/

    SAMA5D2 SIP DS60001484

    Datasheet Serial EEPROMs with EUI-48Node Identitywww.microchip.com/

    24AA02E48 24AA02E48T-I/OT

    Datasheet 10BASE-T/100BASE-TXEthernet PHY www.microchip.com/ksz8081 KSZ8081RNAIA

    Datasheet Serial Quad I/O (SQI) FlashMemorywww.microchip.com/

    sst26vf064b SST26VF064BT-104I/MF

    Datasheet Digital Power Management IC www.microchip.com/mic2800 MIC2800-G1JJYML

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 6

    http://www.microchip.com/design-centers/32-bit-mpus/sama5-new/sama5d2-serieshttp://www.microchip.com/design-centers/32-bit-mpus/sama5-new/sama5d2-serieshttp://microchip.com/sama5d2sipshttp://microchip.com/sama5d2sipshttp://www.microchip.com/wwwproducts/en/24AA02E48http://www.microchip.com/wwwproducts/en/24AA02E48http://www.microchip.com/wwwproducts/en/ksz8081http://www.microchip.com/wwwproducts/en/sst26vf064bhttp://www.microchip.com/wwwproducts/en/sst26vf064bhttp://www.microchip.com/wwwproducts/en/mic2800

  • 3. Block DiagramFigure 3-1.SAMA5D27 SOM1 Block Diagram

    MPU + DDR2 1GbSAMA5D27C-D1G-CU

    LFBGA289

    64Mbit Serial QUAD I/OFlash Memory

    SST26VF064BT-104I/MF

    1K Serial EEPROMwith EUI-48 Node Identity

    24AA02E48T-I/OT

    10BASE-T / 100BASE-TXPHY With RMII Support

    KSZ8081RNAIA

    Power ManagementUnit

    MIC2800-G1JJYML

    VDDSDHC VDDISC VDDBU

    MAIN3.3V

    TWI Interface

    103 I/O Available

    CLA

    SS-D

    Ste

    reo

    eMM

    C In

    terfa

    ce

    QSP

    I Int

    erfa

    ce

    Cam

    era

    Inte

    rface

    Up

    to 6

    * PT

    C B

    utto

    ns

    Up

    to 4

    * AD

    C In

    puts

    TWI I

    nter

    face

    Up

    to 4

    * U

    ART

    2 * S

    PI In

    terfa

    ces

    Up

    to 4

    * FL

    EXC

    OM

    LCD

    Inte

    rface

    up

    to 2

    4-bi

    t

    SSC

    Inte

    rface

    Mon

    o PD

    MIC

    Inte

    rface

    Up

    to 2

    * C

    AN

    IS In

    terfa

    ce

    SDIO

    Inte

    rface

    SD-C

    ARD

    Int

    erfa

    ce

    ExternalQSPI

    Connection

    JTAG & DBGU Interfaces DEBUG

    SYSTEM

    MISC

    USB Dev.

    USB Host

    HSIC

    BACKUP7 * PIOBU

    RXDWAKEUPRESET

    SHUTDOWN

    CLK_AUDIO

    COMPP / COMPN

    Disable Boot

    USB Device Connector

    USB Host Connector

    HSIC Device

    PhysicalReceiver

    TransceiverInterface

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 7

  • 4. Pinout

    4.1 Pinout OverviewThe categories of pins are listed below:

    Red: Power Supplies Black: Ground Blue: Signals Orange: Reserved for future use

    Figure 4-1.SAMA5D27 SOM1 Pinout Overview

    PC03

    /LCD

    PWM

    /TIO

    A1/S

    PI1_

    MIS

    O/I2

    SWS0

    PB01/SPI0_SPCK/PWML1/CLASSD_R0

    PB04/UTXD4/FIQ/CLASSD_R3

    PC09/FIQ/ISI_D0/TIOA4PC12/ISI_D3/URXD3/TK0/A1

    PC16

    /ISI_

    D7/R

    K0/A

    5

    RFU2

    RFU1

    PC11

    /ISI_

    D2/T

    CLK4

    /CAN

    RX0/

    A0/N

    BS0

    PC18

    /ISI_

    D9/F

    LEXC

    OM3_

    IO2/

    A7

    GND_

    20

    PB28

    /LCD

    DAT1

    7/FL

    EXCO

    M0_

    IO0/

    TIOA

    5

    PB29

    /LCD

    DAT1

    8/FL

    EXCO

    M0_

    IO1/

    TIOB

    5

    PB30

    /LCD

    DAT1

    9/FL

    EXCO

    M0_

    IO2/

    TCLK

    5

    PB31

    /LCD

    DAT2

    0/FL

    EXCO

    M0_

    IO3

    PC00

    /LCD

    DAT2

    1/FL

    EXCO

    M0_

    IO4

    PC01

    /LCD

    DAT2

    2/CA

    NTX0

    /SPI

    1_SP

    CK/I2

    SCK 0

    PC02

    /LCD

    DAT2

    3/CA

    NRX0

    /SPI

    1_M

    OSI/I

    2SM

    CK0

    PC07

    /LCD

    PCK/

    TWCK

    1/SP

    I1_N

    PCS3

    /URX

    D1

    PB13

    /LCD

    DAT2

    /PCK

    1

    PB14

    /LCD

    DAT3

    /TK1

    /I2SM

    CK1

    PB15

    /LCD

    DAT4

    /TF1

    /I2SC

    K1

    PB16

    /LCD

    DAT5

    /TD1

    /I2SW

    S1

    PB17

    /LCD

    DAT6

    /RD1

    /I2SD

    I1

    PB18

    /LCD

    DAT7

    /RK1

    /I2SD

    O1

    PB19

    /LCD

    DAT8

    /RF1

    /TIO

    A3

    PB20

    /LCD

    DAT9

    /TK0

    /TIO

    B3/P

    CK1

    PB21

    /LCD

    DAT1

    0/TF

    0/TC

    LK3/

    FLEX

    COM

    3_IO

    2

    PB23

    /LCD

    DAT1

    2/RD

    0/TI

    OB2/

    FLEX

    COM

    3_IO

    0

    PB24

    /LCD

    DAT1

    3/RK

    0/TC

    LK2/

    FLEX

    COM

    3_IO

    3

    PB25

    /LCD

    DAT1

    4/RF

    0/FL

    EXCO

    M3_

    IO4

    PB26

    /LC D

    DAT1

    5/UR

    XD0

    PB27

    /LCD

    DAT1

    6/UT

    XD0

    PB11

    /LCD

    DAT0

    /URX

    D3/P

    DMDA

    T0

    PB12

    /LCD

    DAT1

    /UTX

    D3/P

    DMCL

    K0

    PB05

    /TCL

    K2/P

    WM

    H2/Q

    SPI1

    _SCK

    PB07

    /TIO

    B2/P

    WM

    H3/Q

    SPI1

    _IO0

    PB09

    /TIO

    A3/P

    WM

    FI1/Q

    SPI1

    _IO2

    PB10

    /TIO

    B3/P

    WM

    EXTR

    G1/Q

    SPI1

    _IO3

    PC08

    /LCD

    DEN/

    FIQ/P

    CK0/

    UTXD

    1

    GND_

    24

    GND_

    23

    GND_

    22

    GND_

    21

    PC22/ISI_VSYNC/FLEXCOM3_IO4/A11

    PC14/ISI_D5/TD0/A3

    PC20/ISI_D11/FLEXCOM3_IO0/A9

    PC15/ISI_D6/RD0/A4PC24/ISI_MCK/A13

    SHDN

    VDDIN_3V3VDDIN_3V3

    VDDISC

    PD22/EEPROM_TWCK_PD22PD21/EEPROM_TWD_PD21

    PD03/UTXD1/FIQ/NWAIT/PTCROW0

    PD04/TWD1/NCS0/PTCROW1

    PD05/TWCK1/NCS1/PTCROW2PD06/PCK1/NCS2/PTCROW3

    PD07/NWR1/NBS1/PTCROW4

    PD08/NANDRDY/PTCROW5

    GND_04

    GND_06

    PD24/UTXD2/AD5PD23/URXD2/AD4

    GND_03

    RXD

    ETH_RXMETH_RXP

    ETH_LED0

    ETH_TXMETH_TXP

    GND_05

    PC10/ISI_D1/TIOB4/CANTX0

    PC13/ISI_D4/UTXD3/TF0/A2PC17/ISI_D8/RF0/A6

    PC19/ISI_D10/FLEXCOM3_IO1/A8PC21/ISI_PCK/FLEXCOM3_IO3/A10

    PD26/AD7PIOBU1

    GND_00

    GND_01

    GND_02

    GND_

    09

    PD27

    /JTA

    G_TC

    K

    PD28

    /JTA

    G_TD

    IPD

    29/J

    TAG_

    TDO

    PD30

    /JTA

    G_TM

    S

    PIO

    BU7

    PA11

    /SDM

    MC0

    _VDD

    SEL/

    TCLK

    4/A2

    2/NA

    NDCL

    E

    PA00

    /SDM

    MC0

    _CK/

    QSPI

    O0_S

    LK/D

    0

    PA06

    /SDM

    MC0

    _DAT

    4/TI

    OA5/

    FLEX

    COM

    2_IO

    0/D6

    PA07

    /SDM

    MC0

    _DAT

    5/TI

    OB5/

    FLEX

    COM

    2_IO

    1/D7

    PA08

    /SDM

    MC0

    _DAT

    6/TC

    LK5/

    FLEX

    COM

    2_IO

    2/NW

    E/NA

    NDW

    EPA

    09/S

    DMM

    C0_D

    AT7/

    TIOA

    4/FL

    EXCO

    M2_

    IO3/

    NCS3

    PA10

    /SDM

    MC0

    _RST

    N/TI

    OB4/

    FLEX

    COM

    2_IO

    4/A2

    1/NA

    NDAL

    E

    GND_

    07

    VDDB

    U

    PD19

    /PCK

    0/TW

    D1/A

    D0PD

    20/T

    IOA2

    /TW

    CK1/

    AD1

    PIO

    BU3

    CLK_

    AUDI

    OnR

    ST

    PA03

    /SDM

    MC0

    _DAT

    1/QS

    PI0_

    IO1/

    D3

    PA02

    /SDM

    MC0

    _DAT

    0/QS

    PI0_

    IO0/

    D2PA

    04/S

    DMM

    C0_D

    AT2/

    QSPI

    0_IO

    2/D4

    PA05

    /SDM

    MC0

    _DAT

    3/QS

    PI0_

    IO3/

    D5

    PIO

    BU5

    PIO

    BU6

    PIO

    BU4

    WKU

    P

    PIO

    BU2

    GND_

    10

    GND_

    08

    GND_

    15

    RFU0

    PD25/AD6

    PD01/A24

    PC26/CANTX1/A15PC27/PCK1/CANRX1/A16

    PC28/FLEXCOM4_IO0/PCK2/A17PC29/FLEXCOM4_IO1/A18

    PC30/FLEXCOM4_IO2/A19PB00/SPI0_MOSI/PWMH1

    PA14/SPI0_SPCK/TK1/QSPI0_SCK/I2SMCK1/FLEXCOM3_IO2/D9

    PA15/SPI0_MOSI/TF1/QSPI0_CS/I2SCK1/FLEXCOM3_IO0/D10

    PA16/SPI0_MISO/TD1/QSPI0_IO0/I2SWS1/FLEXCOM3_IO3/D11

    PA17/SPI0_NPCS0/RD1/QSPI0_IO1/I2SDI1/FLEXCOM3_IO4/D12

    PA18/SPI0_NPCS1/RK1/QSPI0_IO2/I2SDO1/SDMMC1_DAT0/D13PA20/SPI0_NPCS3/TIOB0/SDMMC1_DAT2/D15

    PA22/FLEXCOM1_IO2/SPI1_SPCK/SDMMC1_CK/QSPI0_SCK

    PA25/FLEXCOM1_IO3/SPI1_NPCS0/QSPI0_IO1

    PA26/FLEXCOM1_IO4/SPI1_NPCS1/QSPI0_IO2

    PB03/URXD4/IRQ/PWMEXTRG0/CLASSD_R2PB02/PWMFI0/CLASSD_R1

    PA21/PCK2/IRQ/TCLK0/SDMMC1_DAT3/NANDRDY

    PA27/TIOA1/SPI0_NPCS2/SPI1_NPCS2/SDMMC1_RSTN/QSPI0_IO3

    PA23/FLEXCOM1_IO1/SPI1_MOSI/QSPI0_CS

    PA24/FLEXCOM1_IO0/SPI1_MISO/QSPI0_IO0

    GND_19

    DIS_BOOTPB06/TIOA2/PWML2/QSPI1_CSPB08/TCLK3/PWML3/QSPI1_IO1

    PD00/FLEXCOM4_IO4/UTXD3/A23

    PA12/SDMMC0_WP/IRQ/NRD/NANDOEPA13/SDMMC0_CD/FLEXCOM3_IO1/D8

    PA28/TIOB1/SPI0_NPCS3/SPI1_NPCS3/SDMMC1_CMD/CLASSD_L0PA29/TCLK1/SPI0_NPCS1/SDMMC1_WP/CLASSD_L1

    PA30/SPI0_NPCS0/PWMH0/SDMMC1_CD/CLASSD_L2PA31/SPI0_MISO/PWML0/CLASSD_L3

    GND_17

    GND_16

    GND_18

    PA01

    /SDM

    MC0

    _CM

    D/QS

    PI0_

    CS/D

    1GN

    D_14

    PD02/URXD1/A25

    COM

    PPCO

    MPN

    USBA

    _MUS

    BA_P

    GND_

    11VD

    DSDH

    C

    USBB

    _MUS

    BB_P

    STRO

    BEDA

    TA

    GND_

    13

    GND_

    12

    PA19/SPI0_NPCS2/RF1/QSPI0_IO3/TIOA0/SDMMC1_DAT1/D14

    PC31/FLEXCOM4_IO3/URXD3/A20

    PC04

    /LCD

    DISP

    /TIO

    B1/S

    PI1_

    NPCS

    0/I2

    SDI0

    PC05

    /LCD

    VSYN

    C/TC

    LK1/

    SPI1

    _NPC

    S1/I2

    SDO0

    PC06

    /LCD

    HSYN

    C/TW

    D1/S

    PI1_

    NPCS

    2

    PB22

    /LCD

    DAT1

    1/TD

    0/TI

    OA2/

    FLEX

    COM

    3_IO

    1

    PC23

    /ISI_

    HSYN

    C/A1

    2

    PC25

    /ISI_

    FIELD

    /A14

    1

    5

    10

    15

    20

    25

    30

    35

    40

    42

    43 45 50 55 60 65 70 75 80 85 88

    8990

    95

    100

    105

    110

    115

    120

    125

    130

    176

    131

    135

    140

    145

    150

    155

    160

    165

    170

    175

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 8

  • 4.2 Pin ListThe pin list of the SAMA5D27 SOM1 is provided in the following tables.

    Table 4-1.System-On-Module Pin Description: PIOA

    Pin Number PIO Power Rail Other Features Type

    80 PA00 VDDSDHC SDMMC0_CK/QSPIO0_SLK/D0 I/O

    76 PA01 VDDSDHC SDMMC0_CMD/QSPI0_CS/D1 I/O

    83 PA02 VDDSDHC SDMMC0_DAT0/QSPI0_IO0/D2 I/O

    81 PA03 VDDSDHC SDMMC0_DAT1/QSPI0_IO1/D3 I/O

    84 PA04 VDDSDHC SDMMC0_DAT2/QSPI0_IO2/D4 I/O

    85 PA05 VDDSDHC SDMMC0_DAT3/QSPI0_IO3/D5 I/O

    86 PA06 VDDSDHC SDMMC0_DAT4/TIOA5/FLEXCOM2_IO0/D6

    I/O

    79 PA07 VDDSDHC SDMMC0_DAT5/TIOB5/FLEXCOM2_IO1/D7

    I/O

    78 PA08 VDDSDHC SDMMC0_DAT6/TCLK5/FLEXCOM2_IO2/NWE/NANDWE

    I/O

    77 PA09 VDDSDHC SDMMC0_DAT7/TIOA4/FLEXCOM2_IO3/NCS3

    I/O

    82 PA10 VDDSDHC SDMMC0_RSTN/TIOB4/FLEXCOM2_IO4/A21/NANDALE

    I/O

    87 PA11 VDDIN_3V3 SDMMC0_VDDSEL/TCLK4/A22/NANDCLE

    I/O

    92 PA12 VDDIN_3V3 SDMMC0_WP/IRQ/NRD/NANDOE I/O

    91 PA13 VDDIN_3V3 SDMMC0_CD/FLEXCOM3_IO1/D8 I/O

    111 PA14 VDDIN_3V3 SPI0_SPCK/TK1/QSPI0_SCK/I2SMCK1/FLEXCOM3_IO2/D9

    I/O

    109 PA15 VDDIN_3V3 SPI0_MOSI/TF1/QSPI0_CS/I2SCK1/FLEXCOM3_IO0/D10

    I/O

    112 PA16 VDDIN_3V3 SPI0_MISO/TD1/QSPI0_IO0/I2SWS1/FLEXCOM3_IO3/D11

    I/O

    108 PA17 VDDIN_3V3 SPI0_NPCS0/RD1/QSPI0_IO1/I2SDI1/FLEXCOM3_IO4/D12

    I/O

    105 PA18 VDDIN_3V3 SPI0_NPCS1/RK1/QSPI0_IO2/I2SDO1/SDMMC1_DAT0/D13

    I/O

    101 PA19 VDDIN_3V3 SPI0_NPCS2/RF1/QSPI0_IO3/TIOA0/SDMMC1_DAT1/D14

    I/O

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 9

  • Pin Number PIO Power Rail Other Features Type

    104 PA20 VDDIN_3V3 SPI0_NPCS3/TIOB0/SDMMC1_DAT2/D15

    I/O

    103 PA21 VDDIN_3V3 PCK2/IRQ/TCLK0/SDMMC1_DAT3/NANDRDY

    I/O

    106 PA22 VDDIN_3V3 FLEXCOM1_IO2/SPI1_SPCK/SDMMC1_CK/QSPI0_SCK

    I/O

    102 PA23 VDDIN_3V3 FLEXCOM1_IO1/SPI1_MOSI/QSPI0_CS

    I/O

    99 PA24 VDDIN_3V3 FLEXCOM1_IO0/SPI1_MISO/QSPI0_IO0

    I/O

    97 PA25 VDDIN_3V3 FLEXCOM1_IO3/SPI1_NPCS0/QSPI0_IO1

    I/O

    100 PA26 VDDIN_3V3 FLEXCOM1_IO4/SPI1_NPCS1/QSPI0_IO2

    I/O

    90 PA27 VDDIN_3V3 TIOA1/SPI0_NPCS2/SPI1_NPCS2/SDMMC1_RSTN/QSPI0_IO3

    I/O

    95 PA28 VDDIN_3V3 TIOB1/SPI0_NPCS3/SPI1_NPCS3/SDMMC1_CMD/CLASSD_L0

    I/O

    96 PA29 VDDIN_3V3 TCLK1/SPI0_NPCS1/SDMMC1_WP/CLASSD_L1

    I/O

    94 PA30 VDDIN_3V3 SPI0_NPCS0/PWMH0/SDMMC1_CD/CLASSD_L2

    I/O

    93 PA31 VDDIN_3V3 SPI0_MISO/PWML0/CLASSD_L3 I/O

    Table 4-2.System-On-Module Pin Description: PIOB

    Pin Number PIO Power Rail Other Features Type

    119 PB00 VDDIN_3V3 SPI0_MOSI/PWMH1 I/O

    122 PB01 VDDIN_3V3 SPI0_SPCK/PWML1/CLASSD_R0 I/O

    124 PB02 VDDIN_3V3 PWMFI0/CLASSD_R1 I/O

    123 PB03 VDDIN_3V3 URXD4/IRQ/PWMEXTRG0/CLASSD_R2

    I/O

    125 PB04 VDDIN_3V3 UTXD4/FIQ/CLASSD_R3 I/O

    134 PB05 VDDIN_3V3 TCLK2/PWMH2/QSPI1_SCK I/O

    127 PB06 VDDIN_3V3 TIOA2/PWML2/QSPI1_CS I/O

    133 PB07 VDDIN_3V3 TIOB2/PWMH3/QSPI1_IO0 I/O

    128 PB08 VDDIN_3V3 TCLK3/PWML3/QSPI1_IO1 I/O

    132 PB09 VDDIN_3V3 TIOA3/PWMFI1/QSPI1_IO2 I/O

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 10

  • Pin Number PIO Power Rail Other Features Type

    135 PB10 VDDIN_3V3 TIOB3/PWMEXTRG1/QSPI1_IO3 I/O

    148 PB11 VDDIN_3V3 LCDDAT0/URXD3/PDMDAT0 I/O

    151 PB12 VDDIN_3V3 LCDDAT1/UTXD3/PDMCLK0 I/O

    155 PB13 VDDIN_3V3 LCDDAT2/PCK1 I/O

    150 PB14 VDDIN_3V3 LCDDAT3/TK1/I2SMCK1 I/O

    162 PB15 VDDIN_3V3 LCDDAT4/TF1/I2SCK1 I/O

    154 PB16 VDDIN_3V3 LCDDAT5/TD1/I2SWS1 I/O

    157 PB17 VDDIN_3V3 LCDDAT6/RD1/I2SDI1 I/O

    152 PB18 VDDIN_3V3 LCDDAT7/RK1/I2SDO1 I/O

    158 PB19 VDDIN_3V3 LCDDAT8/RF1/TIOA3 I/O

    156 PB20 VDDIN_3V3 LCDDAT9/TK0/TIOB3/PCK1 I/O

    164 PB21 VDDIN_3V3 LCDDAT10/TF0/TCLK3/FLEXCOM3_IO2

    I/O

    161 PB22 VDDIN_3V3 LCDDAT11/TD0/TIOA2/FLEXCOM3_IO1

    I/O

    160 PB23 VDDIN_3V3 LCDDAT12/RD0/TIOB2/FLEXCOM3_IO0

    I/O

    168 PB24 VDDIN_3V3 LCDDAT13/RK0/TCLK2/FLEXCOM3_IO3

    I/O

    159 PB25 VDDIN_3V3 LCDDAT14/RF0/FLEXCOM3_IO4 I/O

    169 PB26 VDDIN_3V3 LCDDAT15/URXD0 I/O

    163 PB27 VDDIN_3V3 LCDDAT16/UTXD0 I/O

    167 PB28 VDDIN_3V3 LCDDAT17/FLEXCOM0_IO0/TIOA5 I/O

    144 PB29 VDDIN_3V3 LCDDAT18/FLEXCOM0_IO1/TIOB5 I/O

    165 PB30 VDDIN_3V3 LCDDAT19/FLEXCOM0_IO2/TCLK5 I/O

    143 PB31 VDDIN_3V3 LCDDAT20/FLEXCOM0_IO3 I/O

    Table 4-3.System On Module Pin Table : PIOC

    Pin Number PIO Power Rail Other Features Type

    145 PC00 VDDIN_3V3 LCDDAT21/FLEXCOM0_IO4 I/O

    141 PC01 VDDIN_3V3 LCDDAT22/CANTX0/SPI1_SPCK/I2SCK0

    I/O

    146 PC02 VDDIN_3V3 LCDDAT23/CANRX0/SPI1_MOSI/I2SMCK0

    I/O

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 11

  • Pin Number PIO Power Rail Other Features Type

    142 PC03 VDDIN_3V3 LCDPWM/TIOA1/SPI1_MISO/I2SWS0

    I/O

    136 PC04 VDDIN_3V3 LCDDISP/TIOB1/SPI1_NPCS0/I2SDI0

    I/O

    137 PC05 VDDIN_3V3 LCDVSYNC/TCLK1/SPI1_NPCS1/I2SDO0

    I/O

    140 PC06 VDDIN_3V3 LCDHSYNC/TWD1/SPI1_NPCS2 I/O

    139 PC07 VDDIN_3V3 LCDPCK/TWCK1/SPI1_NPCS3/URXD1

    I/O

    138 PC08 VDDIN_3V3 LCDDEN/FIQ/PCK0/UTXD1 I/O

    2 PC09 VDDISC FIQ/ISI_D0/TIOA4 I/O

    9 PC10 VDDISC ISI_D1/TIOB4/CANTX0 I/O

    175 PC11 VDDISC ISI_D2/TCLK4/CANRX0/A0/NBS0 I/O

    3 PC12 VDDISC ISI_D3/URXD3/TK0/A1 I/O

    4 PC13 VDDISC ISI_D4/UTXD3/TF0/A2 I/O

    8 PC14 VDDISC ISI_D5/TD0/A3 I/O

    12 PC15 VDDISC ISI_D6/RD0/A4 I/O

    174 PC16 VDDISC ISI_D7/RK0/A5 I/O

    5 PC17 VDDISC ISI_D8/RF0/A6 I/O

    172 PC18 VDDISC ISI_D9/FLEXCOM3_IO2/A7 I/O

    6 PC19 VDDISC ISI_D10/FLEXCOM3_IO1/A8 I/O

    14 PC20 VDDISC ISI_D11/FLEXCOM3_IO0/A9 I/O

    7 PC21 VDDISC ISI_PCK/FLEXCOM3_IO3/A10 I/O

    11 PC22 VDDISC ISI_VSYNC/FLEXCOM3_IO4/A11 I/O

    170 PC23 VDDISC ISI_HSYNC/A12 I/O

    13 PC24 VDDISC ISI_MCK/A13 I/O

    173 PC25 VDDISC ISI_FIELD/A14 I/O

    115 PC26 VDDIN_3V3 CANTX1/A15 I/O

    114 PC27 VDDIN_3V3 PCK1/CANRX1/A16 I/O

    117 PC28 VDDIN_3V3 FLEXCOM4_IO0/PCK2/A17 I/O

    118 PC29 VDDIN_3V3 FLEXCOM4_IO1/A18 I/O

    120 PC30 VDDIN_3V3 FLEXCOM4_IO2/A19 I/O

    116 PC31 VDDIN_3V3 FLEXCOM4_IO3/URXD3/A20 I/O

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 12

  • Table 4-4.System-On-Module Pin Description: PIOD

    Pin Number PIO Power Rail Other Features Type

    121 PD00 VDDIN_3V3 FLEXCOM4_IO4/UTXD3/A23 I/O

    113 PD01 VDDIN_3V3 A24 I/O

    23 PD02 VDDIN_3V3 URXD1/A25 I/O

    24 PD03 VDDIN_3V3 UTXD1/FIQ/NWAIT/PTCROW0 I/O

    27 PD04 VDDIN_3V3 TWD1/NCS0/PTCROW1 I/O

    21 PD05 VDDIN_3V3 TWCK1/NCS1/PTCROW2 I/O

    22 PD06 VDDIN_3V3 PCK1/NCS2/PTCROW3 I/O

    25 PD07 VDDIN_3V3 NWR1/NBS1/PTCROW4 I/O

    28 PD08 VDDIN_3V3 NANDRDY/PTCROW5 I/O

    58 PD19 VDDIN_3V3 PCK0/TWD1/AD0 I/O

    57 PD20 VDDIN_3V3 TIOA2/TWCK1/AD1 I/O

    19 PD21 VDDIN_3V3 EEPROM_TWD_PD21 I/O

    20 PD22 VDDIN_3V3 EEPROM_TWCK_PD22 I/O

    30 PD23 VDDIN_3V3 URXD2/AD4 I/O

    29 PD24 VDDIN_3V3 UTXD2/AD5 I/O

    110 PD25 VDDIN_3V3 AD6 I/O

    34 PD26 VDDIN_3V3 AD7 I/O

    53 PD27 VDDIN_3V3 JTAG_TCK I/O

    51 PD28 VDDIN_3V3 JTAG_TDI I/O

    52 PD29 VDDIN_3V3 JTAG_TDO I/O

    54 PD30 VDDIN_3V3 JTAG_TMS I/O

    Table 4-5.System-On-Module Pin Description: System

    Pin Number PIO Power Rail Designation Type

    61 CLK_AUDIO VDDIN_3V3 Audio clock Output

    64 COMPN VDDBU External analog comparator input Input

    63 COMPP VDDBU External analog comparator input Input

    126 DIS_BOOT VDDIN_3V3 QSPI Interface Disable pin Input

    67 USBA_M VDDIN_3V3 USB Device High Speed Data -

    68 USBA_P VDDIN_3V3 USB Device High Speed Data +

    70 USBB_M VDDIN_3V3 USB Host Port B High Speed Data -

    71 USBB_P VDDIN_3V3 USB Host Port B High Speed Data +

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 13

  • Pin Number PIO Power Rail Designation Type

    74 DATA VDDHSIC USB High-Speed Inter-Chip Data

    73 STROBE VDDHSIC USB High-Speed Inter-Chip Strobe

    60 NRST VDDIN_3V3 Microprocessor reset Input / ActiveLow

    33 PIOBU1 VDDBU Tamper or Wakeup input Input

    44 PIOBU2 VDDBU Tamper or Wakeup input Input

    48 PIOBU3 VDDBU Tamper or Wakeup input Input

    47 PIOBU4 VDDBU Tamper or Wakeup input Input

    46 PIOBU5 VDDBU Tamper or Wakeup input Input

    59 PIOBU6 VDDBU Tamper or Wakeup input Input

    45 PIOBU7 VDDBU Tamper or Wakeup input Input

    32 RXD VDDBU Low Power Asynchronous Receiver Input

    35 SHDN VDDBU Shutdown Control Output

    49 WKUP VDDBU Wakeup Input

    36 ETH_LED0 VDDIN_3V3 Status LED control for Ethernet ports Output

    37 ETH_RXM 2.5V Physical receive or transmit signal (differential) I/O

    38 ETH_RXP 2.5V Physical receive or transmit signal (+differential) I/O

    40 ETH_TXM 2.5V Physical receive or transmit signal (differential) I/O

    41 ETH_TXP 2.5V Physical receive or transmit signal (+differential) I/O

    Table 4-6.System-On-Module Pin Description: Power

    Pin Number PIO Description Comments

    16,17 VDDIN_3V3 Main 3.3V Supply inputs. Used forPeripheral I/O lines and MIC2800-G1JJYML supplies.

    55 VDDBU Input supply for Slow ClockOscillator, internal 32 kHz RCOscillator and a part of theSystem Controller

    65 VDDSDHC SDMMC I/O lines supply input

    15 VDDISC Image Sensor I/O lines supplyinput

    For decoupling guidelines, refer tothe section "Design Guidelines".

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 14

  • Pin Number PIO Description Comments

    1, 10, 18, 26,31, 39, 42, 43,50, 56, 62, 66,69, 72, 75, 88,89, 98, 107,130, 131, 149,166, 171, 176

    GND Ground connections Must be connected together

    129 RFU0 Reserved for future use Must be left floating

    147 RFU1 Reserved for future use Must be left floating

    153 RFU2 Reserved for future use Must be left floating

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 15

  • 5. Functional Description

    5.1 SAMA5D27 System-In-PackageThe SAMA5D2 System-In-Package (SIP) (SAMA5D27C-D1G-CU) integrates the ARM Cortex-A5processor-based SAMA5D2 MPU with 1 Gbit DDR2-SDRAM in a single package.

    By combining the high-performance, ultra-low-power SAMA5D2 with DDR2-SDRAM in a single package,PCB routing complexity, area and number of layers is reduced. This makes board design easier andlowers the overall cost of bill of materials. Board design is more robust by facilitating design for EMI, ESDand signal integrity.

    For more information about the SIP, see "Reference Documents". This section lists the sole referencedocuments for product information on the SAMA5D2 and the DDR2-SDRAM memory.

    The SAMA5D27C-D1G-CU is available in a 289-ball TFBGA package.

    Connections of the supplies and the system pins of the SAMA5D27C-D1G-CU are described in thefollowing schematics.

    Figure 5-1.SAMA5D27C-D1G-CU Supplies Distribution Schematic

    VDDIN_3V3

    VDDUTMII

    VDDOSC

    VDDAUDIOPLL

    VDDIOP0

    VDDIOP1

    VDDIOP2

    GNDUTMII

    10F

    4.7

    F

    2.2R

    100n

    F

    100n

    F

    100n

    F

    2.2R

    BLM03AX100SZ11 2

    4.7

    F

    100n

    F10

    0nF

    MLZ1608N100L1 2

    BLM03AX100SZ1

    1 2

    100n

    F

    100n

    F

    0R

    100n

    F

    MLZ1608N100L1 2

    BLM03AX100SZ11 2

    BLM03AX100SZ11 2

    BLM03AX100SZ1

    1 20R

    100n

    F

    VDDANA

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 16

  • Figure 5-2.SAMA5D27C-D1G-CU Supplies Decoupling Schematic

    (3V3)

    (3V3)

    (3V3)

    (1V2)

    (3V3)

    (3V3)

    (3V3)

    (3V3)

    (1V8)

    (1V2)

    (2V5)

    (1V2)

    (1V2)

    VDDIOP2

    VDDIOP1

    VDDIOP0

    VDDOSC

    VDDUTMII

    VDDAUDIOPLL

    VDDBU

    VDDFUSE

    VDDSDHC

    VDDISC

    VDDCORE

    GNDUTMII

    4.7

    F

    100n

    F

    100n

    F

    4.7

    F

    MLZ1608N100L1 2

    100n

    F

    100n

    F

    100n

    F

    100n

    F

    SAMA5D27C-D1G-CU

    U2G

    GNDADCJ6GNDANAM1

    GNDBUU4

    GNDCORE_1E12

    GNDCORE_2F12

    GNDCORE_3J11

    GNDCORE_4K6

    GNDCORE_5K7

    GNDCORE_6K11

    GNDDDR_1E10

    GNDDDR_2F8

    GNDDDR_3G10

    GNDDDR_4H12

    GNDDDR_5J9

    GNDDDR_6K10

    GNDDDR_7M14

    GNDDPLLT3

    GNDFLTDPLLT4

    GNDIOP0_1E3

    GNDIOP0_2F2

    GNDIOP1_1M12

    GNDIOP1_2P11

    GNDOSCP5

    GNDPLLAT5

    GNDUTMIM6

    GNDUTMI_CORER6

    VDDADCK4 VDDANAJ5

    VDDBUU5

    VDDCORE_1D7

    VDDCORE_2E9

    VDDCORE_3H2

    VDDCORE_4L12

    VDDCORE_5P7

    VDDDDR_1E8

    VDDDDR_2E11

    VDDDDR_3G12

    VDDDDR_4H10

    VDDDDR_5J8

    VDDDDR_6L10

    VDDDDR_7L14

    VDDFLTDPLLM4

    VDDFUSEN13

    VDDIOP0_1D4

    VDDIOP0_2F3

    VDDIOP1_1N12

    VDDIOP1_2P12

    VDDOSCN6

    VDDPLLAR5

    VDDSDHCN8

    VDDUTMIP6

    VDDUTMI_COREM7

    GNDIOP2_1D6

    VDDCORE_6U3

    VDDIOP2_1D9

    VDDHSICR7

    VDDISIH3

    GNDISIH5

    GNDSDHCR8

    2.2R

    100n

    F

    VDDPLLA

    VDDUTMIC

    VDDHSIC

    VDDANA

    100n

    F

    100n

    F

    VDDIODDR

    100n

    F

    100n

    F

    100n

    F

    100n

    F

    100n

    F

    1nF

    1nF

    100n

    F

    100n

    F

    1nF

    1nF

    10F

    1nF

    1nF

    1nF

    VDDIODDR

    VDDCORE

    1nF

    1nF

    1nF

    100n

    F

    1nF

    100n

    F

    100n

    F

    100n

    F

    10F

    100n

    F

    1nF

    1nF

    100n

    F

    VDDCORE

    VDDCOREBLM03AX100SZ11 2

    VDDCOREBLM03AX100SZ1

    1 2

    Figure 5-3.SAMA5D27C-D1G-CU System Schematic

    R & Cas close as possibleVDDANA

    COMPNCOMPP

    LOWQ#PIOBU1PIOBU2PIOBU3PIOBU4PIOBU5PIOBU6PIOBU7

    GNDUTMII

    SHDN

    WKUP

    nRST

    USBA_MUSBA_P

    USBB_MUSBB_P

    STROBEDATA

    CLK_AUDIO

    RXD

    NX2012SA_32-768KHz

    1 2

    8pF50V

    NX2016SA_24MHz

    11 2

    GN

    D1

    334

    GN

    D2

    12pF50V 10pF25V

    SAMA5D27C-D1G-CU

    ADVREFPL9

    CLK_AUDIOT8

    COMPNU7COMPPU6

    HHSDMAT10

    HHSDMBT11

    HHSDPAU10

    HHSDPBU11

    JTAGSELR3 NRSTT7

    PIOBU0P3

    PIOBU1M3

    PIOBU2P2

    PIOBU3P4

    PIOBU4N4

    PIOBU5M5

    SHDNT2 TSTR4

    VBGT6

    WKUPR2

    XINU9

    XIN32U2

    XOUTU8

    XOUT32U1

    PIOBU6N5

    PIOBU7N3

    HHSDPDATCT12

    HHSDMSTRCU12

    RXDN2

    100R

    8pF50V

    100R

    100R 100R12pF50V

    10K

    5.62

    K

    100R

    Y1

    Y2

    Table 5-1.SAMA5D27C-D1G-CU External Crystal

    Item Designation Type Manufacturer Manufacturer Specification Number

    Y1 24MHz Crystal NX2016SA NDK EXS00A-CS08664

    Y2 32.768kHzCrystal

    NX2012SA NDK EXS00A-MU00626

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 17

  • 5.2 Power SuppliesThe SAMA5D27 SOM1 is supplied by an external 3.3V and generates its own internal supplies byinterfacing with the Microchip MIC2800-G1JJYML power management unit.

    The MIC2800 is a high-performance power management IC, providing three output voltages withmaximum efficiency and is optimized to respect the MPU power up and down cycles.

    Integrating a 2 MHz DC/DC converter with an LDO post regulator, the MIC2800 gives two high-efficiencyoutputs with a second, 300mA LDO for maximum flexibility. The DC-to-DC converter uses small values ofL and C to reduce board space while still retaining efficiency over 90% at load currents up to 600mA.

    The three outputs supply the following internal nodes: DCDC set @ 1.8V supplies SAMA5D27C-D1G-CU DDR2 pads and device. LDO1 set @ 1.2V supplies SAMA5D27C-D1G-CU Core. LDO2 set @ 2.5V supplies SAMA5D27C-D1G-CU VDDFUSE pad.

    The MIC2800 is a Cap design, operating with very small ceramic output capacitors and inductors forstability.

    It is available in fixed output voltages in the 16-pin 3mm x 3mm MLF lead-less package. For moreinformation, refer to the product web page.

    Figure 5-4.Power Management Unit Schematic

    VDDBU

    VDDIN_3V3

    VDDFUSE

    VDDIODDR

    VDDIODDRVDDCORELOWQ#

    nRST

    4.7uF

    10uF

    2.2uF

    100nF 10nF

    2.2uH1 2

    100nF

    100K

    10uF

    10uFMIC2800-G1JJYML

    POR12

    SW5

    FB9

    CBIAS2

    LOWQ1

    VIN16

    VIN27 LDO2

    8

    PGN

    D4

    SGN

    D3

    EN216

    EN115

    CBYP14

    CSET13

    LDO10

    LDO111

    TPAD

    17

    VDDIN_3V3

    56K

    100nF

    5.3 System ControlThe SAMA5D27 SOM1 provides global system Reset (NRST) and Shutdown (SHDN) pins to theapplication board.

    The NRST pin is an output pin generated by the internal Power Management Unit (MIC2800-G1JJYML) in respect with power sequence timing. It can be forced externally in case of a systemcrash and must be connected as described in the example schematic below.

    The SHDN pin is an output pin and is managed by the software application. It switches the Main3.3V Supply ON or OFF.

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 18

    http://www.microchip.com/wwwproducts/en/MIC2800

  • Figure 5-5.Internal System Control Schematic

    SHDN

    Q1

    DMN26D0UDJ-7D1

    6

    S11

    2 G1

    5G2

    4S2

    3D2

    VDDIN_3V3

    10K

    nRST

    VDDBU

    100K

    From SAMA5D27

    5.4 Ethernet PHYThe Microchip SAMA5D27 SOM1 embeds a single-supply 10BASE-T/100BASE-TX Ethernet physical-layer transceiver for transmission and reception of data over standard CAT-5 unshielded twisted pair(UTP) cable.

    The KSZ8081RNAIA is a highly-integrated PHY solution. The KSZ8081RNAIA offers the Reduced MediaIndependent Interface (RMII) for direct connection to RMII-compliant MACs in Ethernet processors.

    The KSZ8081RNAIA is available in 24-pin, lead-free QFN packages. For more information, refer to the product web page.

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 19

    http://www.microchip.com/wwwproducts/en/ksz8081

  • Figure 5-6.Ethernet PHY Schematic

    VDDIN_3V3

    VDDIN_3V3

    VDD

    IN_3

    V3

    VDDIN_3V3

    ETH_TXPETH_TXM

    ETH_RXPETH_RXM

    GTXCK_PD09GTX1_PD16GTX0_PD15GTXEN_PD10GRX1_PD14GRX0_PD13GRXER_PD12GRXDV_PD11GMDC_PD17GMDIO_PD18ETH_INT_IRQ_PD31

    nRST

    ETH_LED0

    100nF

    2.2uF

    0R

    BLM18PG181SN1D

    1 2

    100nF

    22pF50V

    100nF 10K

    1KU6

    KSZ8081RNAIA

    TXM5 TXP6

    RXP4

    RXM3

    VDD_1V21

    GND22

    PADDLE25

    REXT9

    XI8

    XO7

    REF_CLK16

    TXD121

    TXD020

    TXEN19

    RXD112

    RXD013

    RXER17

    CRS_DV/PHYAD[1_0]15

    MDC11

    MDIO10

    INTRP18

    VDDA_3V32

    VDDIO14

    LED0/ANEN_SPEED23

    RST#24

    10uF

    NX2

    016S

    A_25

    MH

    z

    11

    2

    GND1 33

    4

    GND210K

    6.49K

    22pF50V

    10uF

    1K

    ETH_XO

    ETH_XI

    Y3

    Table 5-2.KSZ8081RNAIA External Crystal

    Item Designation Type Manufacturer Manufacturer Specification Number

    Y3 25MHz Crystal NX2016SA NDK EXS00A-CS10694

    5.5 QSPI MemoryThe SAMA5D27 SOM1 embeds the SST26VF064BT-104I/MF, a 64Mb Serial Quad I/O Flash memory.

    The SST26VF064BT-104I/MF SQI features a six-wire, 4-bit I/O interface that allows for low-power, high-performance operation in a low pin-count package.

    The SST26VF064BT-104I/MF is available in 8-lead WDFN package with 6mm 5mm dimensions.

    For more information, refer to the product web page.

    Figure 5-7.QSPI Memory Schematic

    VDDIN_3V3

    VDDIN_3V3 VDDIN_3V3

    VDDIN_3V3

    PB07/TIOB2/PWMH3/QSPI1_IO0

    PB08/TCLK3/PWML3/QSPI1_IO1

    PB09/TIOA3/PWMFI1/QSPI1_IO2

    PB10/TIOB3/PWMEXTRG1/QSPI1_IO3

    PB05/TCLK2/PWMH2/QSPI1_SCK

    QSPI_SCK_PB05QSPI_IO3_PB10QSPI_IO2_PB09QSPI_IO1_PB08QSPI_IO0_PB07

    PB06/TIOA2/PWML2/QSPI1_CS

    DIS_BOOT

    QSPI_CS_PB06

    22R

    22R

    10KDNP

    10KDNP

    22R

    NL17SZ126DFT2G

    OE1

    IN2

    GND3

    OUT4

    VCC5

    22R

    22R

    10KDNP

    22R

    10KDNP

    10K

    22R

    100nF

    22R

    10KDNP

    22R

    10KDNP

    SST26VF064B-104I/MF

    CE#1SO/SIO1

    2

    WP#/SIO23 VSS

    4SI/SIO05

    SCK6 HOLD/SIO37

    VDD8

    TPAD9

    22R

    100nF

    22R

    10K

    22R

    QSPI_CS#

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 20

    http://www.microchip.com/wwwproducts/en/SST26VF064B

  • Tip: In case of non-use at application level of the QSPI embedded in SAMA5D27 SOM1, it ispossible to reassign the signals dedicated to QSPI memory to another PIO function as definedin the table below. To do so, the DIS_BOOT pin (SAMA5D27 SOM1 pad 126) must be forced toground.

    Table 5-3.Other GPIO Possibilities for QSPI Interface in Case of Non-use

    Pin Number Power RailPrimary PIO Peripheral

    Reset StateSignal Dir Func Signal Dir IOset

    134 VDDIN_3V3 PB05 I/O A TCLK2 I 1 PIO, I, PU,ST

    C PWMH2 O 1

    D QSPI1_SCK O 2

    127 VDDIN_3V3 PB06 I/O A TIOA2 I/O 1 PIO, I, PU,ST

    C PWML2 O 1

    D QSPI1_CS O 2

    133 VDDIN_3V3 PB07 I/O A TIOB2 I/O 1 PIO, I, PU,ST

    C PWMH3 O 1

    D QSPI1_IO0 I/O 2

    128 VDDIN_3V3 PB08 I/O A TCLK3 I 1 PIO, I, PU,ST

    C PWML3 O 1

    D QSPI1_IO1 I/O 2

    132 VDDIN_3V3 PB09 I/O A TIOA3 I/O 1 PIO, I, PU,ST

    C PWMFI1 I 1

    D QSPI1_IO2 I/O 2

    135 VDDIN_3V3 PB10 I/O A TIOB3 I/O 1 PIO, I, PU,ST

    C PWMEXTRG1 I 1

    D QSPI1_IO3 I/O 2

    Tip: The QSPI interface can be shared with another external device. To do so, the QSPI_CS#node must stay at "High" level. That means that the DIS_BOOT pin (SAMA5D27 SOM1 pad126) must be forced to ground.

    5.6 EEPROM MemoryThe SAMA5D27 SOM1 embeds the 24AA02E48T-I/OT, a 1Kb Serial EEPROM with pre-programmedEUI-48 MAC address.

    The device is organized as one block of 128 x 8-bit memory with a 2-wire serial interface. The secondblock is reserved for MAC Address storage.

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 21

  • The 24AA02E48T-I/OT also has a page write capability for up to 8 bytes of data.

    The 24AA02E48T-I/OT is available in the standard 5-lead SOT-23 package. For more information, seethe product web page.

    Figure 5-8.EEPROM Memory Schematic

    VDDIN_3V3

    VDDIN_3V3

    PD22/EEPROM_TWCK_PD22

    PD21/EEPROM_TWD_PD21

    EEPROM_TWCK_PD22

    EEPROM_TWD_PD2122R

    24AA02E48T-I/OT

    VCC4

    SCL1

    SDA3

    VSS2

    NC5 2.2K

    100nF

    22R

    22R

    2.2K

    22R

    Tip: The 2-Wire serial interface can be externally shared with another device. 2-Wire DataSignal (SAMA5D27 SOM1Pad 19) and 2-Wire Clock Signal (SAMA5D27 SOM1Pad 20) areused.

    Important: If the 2-Wire serial interface is used externally, the device connected must have adifferent IC address than the embedded EEPROM. The embedded EEPROM has the followingIC address range: 0x40 0x47

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 22

    http://www.microchip.com/wwwproducts/en/24AA02E48

  • 6. Power Supply Connections and Timing SequencesThe SAMA5D27 SOM1 can be supplied in different ways depending on application needs.

    Four power domains must be supplied and can be connected differently. The four different powerconnections are described below:

    Power Configuration #1: All supplies are connected to the Main 3.3V Supply. Power Configuration #2: Backup domain is connected to a coin-cell and the rest to the Main 3.3V

    Supply. Power Configuration #3: Backup domain is connected to a coin-cell. Camera sensor is connected

    to a separate power supply and the rest to the Main 3.3V Supply. Power Configuration #4: All supply domains are connected to separate power supplies.

    For each power configuration, a Power-On and Power-Off timing sequences to respect are describedbelow.

    6.1 Power Supply Configuration #1The SAMA5D27 SOM1 is supplied by only one main supply.

    In this configuration mode, all supplies are connected together and supplied by the main 3.3V supply. AllPIOs have VDDIN_3V3 Power Rail as voltage reference.

    Figure 6-1.Power Configuration #1

    SHDN

    nRST

    VDDSDHC

    VDDISC

    VDDBU

    VDDIN_3V3

    nRST

    SHDN

    3.3V

    SAM

    A5D

    27-S

    OM

    1

    In this configuration mode, the two following timing sequences are applied.

    Figure 6-2.Power-On Sequence Timing DiagramSYSTEM IS OFF SYSTEM IS POWERED-UP RESET IS RELEASED

    VDDIN_3V3 MAIN 3.3V IS PRESENT

    VDDBU VDDIN_3V3 LEVEL

    VDDISC VDDIN_3V3 LEVEL

    VDDSDHC VDDIN_3V3 LEVEL

    INT_VDD INTERNAL SUPPLIES GENERATION

    SHDN VDDIN_3V3 LEVEL

    nRST

    Tmain

    Tstart

    Tpor

    a

    c

    d

    e

    f

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 23

  • Figure 6-3.Power-Off Sequence Timing DiagramSYSTEM IS ON POWER-OFF PROCEDURE SYSTEM IS POWER-DOWN SYSTEM IS OFF

    VDDIN_3V3 MAIN 3.3V IS PRESENT

    VDDBU VDDIN_3V3 LEVEL

    VDDISC VDDIN_3V3 LEVEL

    VDDSDHC VDDIN_3V3 LEVEL

    INT_VDD INTERNAL SUPPLIES SWITCH-OFF

    SOFTWARE SOFTWARE IS RUNNING SOFTWARE SHUTDOWN

    SHDN SOFTWARE REQUEST

    nRST

    Tsoft

    Tmain_off

    Tstop

    c

    d

    a

    b

    Table 6-1.Timing Values

    Symbol Description Min. Typ. Max. Unit

    tmain(1) Main 3.3V Startup Time 1 ms

    tstart Internal Delay before starting System CoreSupplies

    1 3 ms

    tpor Power-On Reset Delay 10 11 ms

    tsoft Software Shutdown Time Depending on systemoff time

    ms

    tmain_off Main 3.3V Power-off Time 1 ms

    tstop Internal Delay before switching off System CoreSupplies

    1 3 ms

    Note:1. The three supplies VDDIN_3V3, VDDISC and VDDSDHC must be applied at the same time. If a

    delay is implemented, it must be lower than 800s. VDDBU must be applied at the same time asVDDIN_3V3 or just before. It is forbidden to apply VDDBU after VDDIN_3V3.

    6.2 Power Supply Configuration #2The SAMA5D27 SOM1 is supplied by different power supplies.

    Backup domain is connected to a coin-cell. The rest of the power inputs are connected to the main 3.3V supply.

    In this configuration, the following PIOs have VDDBU Power Rail as reference. All other PIO haveVDDIN_3V3 Power Rail as reference.

    COMPP and COMPN PIOBU1 to PIOBU7 RXD, SHDN and WKUP

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 24

  • Figure 6-4.Power Configuration #2

    SHDN

    nRST

    VDDSDHC

    VDDISC

    VDDBU

    VDDIN_3V3

    nRST

    SHDN

    3.3V

    SAM

    A5D

    27-S

    OM

    1

    In this configuration, the two following timing sequences are applied.

    Figure 6-5.Power-On Sequence Timing DiagramSYSTEM IN BACKUP SYSTEM IS POWERED-UP RESET IS RELEASED

    VDDIN_3V3 MAIN 3.3V IS PRESENT

    VDDBU VDDBU ALWAYS PRESENT

    VDDISC VDDIN_3V3 LEVEL

    VDDSDHC VDDIN_3V3 LEVEL

    INT_VDD INTERNAL SUPPLIES GENERATION

    SHDN VDDBU LEVEL / SOFTWARE RELEASE

    nRST

    Tmain

    Tstart

    Tpor

    b

    c

    d

    e

    a

    f

    Figure 6-6.Power-Off Sequence Timing DiagramSYSTEM IS ON POWER-OFF PROCEDURE SYSTEM IS POWER-DOWN SYSTEM IN BACKUP

    VDDIN_3V3 MAIN 3.3V IS PRESENT

    VDDBU VDDBU ALWAYS PRESENT

    VDDISC VDDIN_3V3 LEVEL

    VDDSDHC VDDIN_3V3 LEVEL

    INT_VDD INTERNAL SUPPLIES SWITCH-OFF

    SOFTWARE IS RUNNING SOFTWARE SHUTDOWNSOFTWARE

    SHDN SOFTWARE REQUEST

    nRST

    Tsoft

    Tmain_off

    Tstop

    c

    d

    a

    b

    Table 6-2.Timing Values

    Symbol Description Min. Typ. Max. Unit

    tmain(1) Main 3.3V Startup Time 1 ms

    tstart Internal Delay before starting System CoreSupplies

    1 3 ms

    tpor Power-On Reset Delay 10 11 ms

    tsoft Software Shutdown Time Depending on systemoff time

    ms

    tmain_off Main 3.3V Power-off Time 1 ms

    tstop Internal Delay before switching-off System CoreSupplies

    1 3 ms

    Note:

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 25

  • 1. The three supplies VDDIN_3V3, VDDISC and VDDSDHC must be applied at the same time. If adelay is implemented, it must be lower than tstart.

    6.3 Power Supply Configuration #3Some power inputs of the SAMA5D27 SOM1 are grouped and others are supplied by a separated powersupplies.

    Backup domain is connected to a coin cell. Camera sensor power input (VDDISC) is connected to a separate power supply set at one of the

    following voltage levels (1.8V/2.5V/2.8V/3.0V or 3.3V) depending on the camera sensor technologyused in the application.

    The remaining power inputs are connected to the main 3.3V supply.

    In this configuration, the following PIOs have: VDDBU Power Rail as reference

    COMPP and COMPN PIOBU1 to PIOBU7 RXD, SHDN and WKUP

    VDDISC Power Rail as reference PC09 to PC25

    All other PIOs have VDDIN_3V3 Power Rail as reference.

    Figure 6-7.Power Configuration #3

    SHDN

    nRST

    VDDSDHC

    VDDISC

    VDDBU

    VDDIN_3V3

    nRST

    SHDN

    3.3V

    SAM

    A5D

    27-S

    OM

    1

    In this configuration mode, the two following timing sequences are applied.

    Figure 6-8.Power-On Sequence Timing DiagramSYSTEM IN BACKUP WAKE UP SYSTEM IS POWERED-UP RESET IS RELEASED

    VDDIN_3V3 MAIN 3.3V IS PRESENT

    VDDBU VDDBU ALWAYS PRESENT

    VDDISC EXTERNAL VDDISC LEVEL (1.8V/2.5V/2.8V/3.0V/3.3V)

    VDDSDHC VDDIN_3V3 LEVEL

    INT_VDD INTERNAL SUPPLIES GENERATION

    SHDN VDDBU LEVEL / SOFTWARE RELEASE

    nRST

    Tmain

    Ton1

    Tstart

    Tpor

    b

    a

    d

    c

    e

    f

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 26

  • Figure 6-9.Power-Off Sequence Timing DiagramSYSTEM IS ON POWER-OFF PROCEDURE SYSTEM IS POWER-DOWN SYSTEM IN BACKUP

    VDDIN_3V3 MAIN 3.3V IS PRESENT

    VDDBU VDDBU ALWAYS PRESENT

    VDDISC EXTERNAL VDDISC LEVEL (1.8V/2.5V/2.8V/3.0V/3.3V)

    VDDSDHC VDDIN_3V3 LEVEL

    INT_VDD INTERNAL SUPPLIES SWITCH-OFF

    SOFTWARE IS RUNNING SOFTWARE SHUTDOWNSOFTWARE

    SHDN SOFTWARE REQUEST

    nRST

    Tsoft

    Tmain_off

    Toff1

    Tstop

    c

    d

    e

    a

    b

    Table 6-3.Timing Values

    Symbol Description Min. Typ. Max. Unit

    tmain(1) Main 3.3V Startup Time (From regulatoravailable on the motherboard)

    1 ms

    ton1 VDDISC Regulator Startup Time (From regulatoravailable on the motherboard)

    800 s

    tstart Internal Delay before starting System CoreSupplies

    1 3 ms

    tpor Power-On Reset Delay 10 11 ms

    tsoft Software Shutdown Time Depending on systemoff time

    ms

    tmain_off Main 3.3V Power-off Time (From regulatoravailable on the motherboard)

    1 ms

    toff1 VDDISC Regulator Power-off Time (Fromregulator available on the motherboard)

    1 ms

    tstop Internal Delay before switching off System CoreSupplies

    1 3 ms

    Note:1. The supplies VDDIN_3V3 and VDDSDHC must be applied at the same time. If a delay is

    implemented, it must be lower than tstart.

    6.4 Power Supply Configuration #4Each power input of the SAMA5D27 SOM1 is supplied by separate power supplies.

    Backup domain is connected to a coin cell. Camera sensor power input (VDDISC) is connected to a separate power supply set at one of the

    following voltage levels (1.8V/2.5V/2.8V/3.0V or 3.3V) depending on the camera sensor technologyused in the application.

    SD Card power input (VDDSDHC) is connected to a separate power supply set at one of thefollowing voltage levels (1.8V or 3.3V) depending on the SD Card Technology/Speed used in theapplication.

    VDDIN_3V3 power input is connected to the main 3.3V supply.

    In this configuration, the following PIOs have:

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 27

  • VDDBU Power Rail as reference COMPP and COMPN PIOBU1 to PIOBU7 RXD, SHDN and WKUP

    VDDISC Power Rail as reference PC09 to PC25

    VDDSDHC Power Rail as reference PA00 to PA10

    All other PIOs have VDDIN_3V3 Power Rail as reference.

    Figure 6-10.Power Configuration #4

    SHDN

    nRST

    VDDSDHC

    VDDISC

    VDDBU

    VDDIN_3V3

    nRST

    SHDN

    3.3V

    SAM

    A5D

    27-S

    OM

    1SDMMC0_VDDSEL

    In this configuration mode, the two following timing sequences are applied.

    Figure 6-11.Power-On Sequence Timing DiagramSYSTEM IN BACKUP WAKE UP SYSTEM IS POWERED-UP RESET IS RELEASED

    VDDIN_3V3 MAIN 3.3V IS PRESENT

    VDDBU VDDBU ALWAYS PRESENT

    VDDISC EXTERNAL VDDISC LEVEL (1.8V/2.5V/2.8V/3.0V/3.3V)

    VDDSDHC DYNAMIC VDDSDHC LEVEL (3.3V) DYNAMIC VDDSDHC LEVEL (1.8V)

    SDMMC0_VDDSEL

    INT_VDD INTERNAL SUPPLIES GENERATION

    SHDN VDDBU LEVEL / SOFTWARE RELEASE

    nRST

    Tmain

    Ton2Ton1

    Tstart

    Tpor Tsys

    b

    d

    c

    g

    e

    a

    f

    Figure 6-12.Power-Off Sequence Timing DiagramSYSTEM IS ON POWER-OFF PROCEDURE SYSTEM IS POWER-DOWN SYSTEM IN BACKUP

    VDDIN_3V3 MAIN 3.3V IS PRESENT

    VDDBU VDDBU ALWAYS PRESENT

    VDDISC EXTERNAL VDDISC LEVEL (1.8V/2.5V/2.8V/3.0V/3.3V)

    VDDSDHC VDDSDHC LEVEL (1.8V) VDDSDHC LEVEL (3.3V)

    SDMMC0_VDDSEL

    INT_VDD INTERNAL SUPPLIES SWITCH-OFF

    SOFTWARE IS RUNNING SOFTWARE SHUTDOWNSOFTWARE

    SHDN SOFTWARE REQUEST

    nRST

    Tsoft

    Tmain_off

    Toff1

    Toff2

    Tstop

    c

    d

    e

    f

    a

    b

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 28

  • Table 6-4.Timing Values

    Symbol Description Min. Typ. Max. Unit

    tmain Main 3.3V Startup Time (From regulatoravailable on the mother board)

    1 ms

    ton1 VDDISC Regulator Startup Time (From regulatoravailable on the mother board)

    800 s

    ton2 VDDSDHC Regulator Startup Time (Fromregulator available on the mother board)

    800 s

    tstart Internal Delay before starting System CoreSupplies

    1 3 ms

    tpor Power-On Reset Delay 10 11 ms

    tsys Low Speed to High Speed card timing(1) Depending on systemoff time

    ms

    tsoft Software Shutdown Time Depending on systemoff time

    ms

    tmain_off Main 3.3V Power-off Time (From regulatoravailable on the motherboard)

    1 ms

    toff1 VDDISC Regulator Power-off Time (Fromregulator available on the motherboard)

    1 ms

    toff2 VDDSDHC Regulator Power-off Time (Fromregulator available on the motherboard)

    1 ms

    tstop Internal Delay before switching off System CoreSupplies

    1 3 ms

    Note:1. Timing depends on the system boot time. No particular recommendations to apply.

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 29

  • 7. Booting GuidelinesThis section provides an overview of how to program a Non Volatile Memory (NVM) and boot from it.

    The SAMA5D27 SOM1 embeds a Quad I/O Flash Memory as a source for boot. Another type of NVMmay be located on the motherboard. This section explains how to program, select and boot from an NVM.

    7.1 Boot ProcessThe system always boots from the ROM memory at address 0x0. The ROM code is a boot programcontained in the embedded ROM. It is also called First level bootloader. The SAMA5D2 can beconfigured to run a Standard Boot mode or a Secure Boot mode. More information on how the SecureBoot mode can be enabled, and how the chip operates in this mode, is provided in the documentSAMA5D2x Secure Boot Strategy, document no. 44040. To obtain this application note and additionalinformation about the secure boot and related tools, contact a Microchip sales representative.

    By default, the chip starts in Standard Boot Mode.

    The ROM code standard sequence is executed as follows: Basic chip initialization: crystal or external clock frequency detection. Attempt to retrieve a valid code from external non-volatile memories (NVM). Execution of a monitor called SAM-BA Monitor, in case no valid application has been found on any

    NVM (1).

    Note:1. This may be the case during the first start-up or after an NVM erase or when a "boot disable

    jumper" is used on the memory Chip Select, in order to force an update.

    7.2 Boot ConfigurationThe boot sequence is controlled using a Boot Configuration Word in the Fuse area. The BootConfiguration Word allows several customizations of the Boot Sequence:

    To configure the IO Set where the external memories used to boot are connected (see Section16.4.8 Hardware and Software Constraints for a description of the IO sets)

    To disable the boot on selected memories To configure the UART port used as a terminal console To configure the JTAG pins used for debug. Refer to Debug Considerations.

    See the section Boot Configuration Word of the SAMA5D2 datasheet, document no. DS60001476, for adetailed description of all the bitfields in this word. By default, the value of this word is 0x0. Duringprototyping phases, the value of this fuse word can be overridden by the content of a backup register.The conditions to enable this feature are as follows:

    The fuse bit DISABLE_BSCR must not be set (default value). The Boot Sequence Controller Configuration Register (BSC_CR) must have the BUREG_VALID bit

    set and indicate in BUREG_INDEX which register has to be used.

    Using BUREG allows the user to test several boot configuration options, including Secure Boot Mode,without burning fuses.Note: VDDBU must be connected in order to benefit from this feature. However, in production, it ishighly recommended to disable this feature and to write the boot configuration in fuses.

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 30

  • 7.3 NVM ProgrammingThe SAMA5D27 SOM1 is delivered with SAM-BA In-System Programmer, a comprehensive tool toprogram boot memories.

    In case the boot code does not find a valid program in NVM, the SAM-BA monitor is launched in order toprogram the considered NVM.

    The SAM-BA monitor principle is to: Initialize DBGU and USB. Check if USB Device enumeration occurred. Check if characters are received on the DBGU.

    Once the communication interface is identified, the application runs in an infinite loop waiting for differentcommands.

    The firmware can be sent and programmed in the NVM.

    For more information, refer to the following link. http://www.at91.com/linux4sam/bin/view/Linux4SAM/Sama5d2XplainedMainPage#Using_SAM_BA_to_flash_components

    7.4 Boot From External MemorySeveral types of external memories such as NAND Flash, SDCard, SPI Flash, QSPI Flash, etc. can beconnected to the SAMA5D27 SOM1 and placed on the motherboard.

    For details of the Boot sequence, refer to the "NVM Bootloader Program Description for MRL C Parts"diagram of the SAMA5D2 datasheet, document no. DS60001476.

    The table below provides the list of external memory types and interfaces that enable connection to theSAMA5D27 SOM1:

    Table 7-1.External Memory Connections

    Memory Type Interface PIO Comments

    SDCard

    SD-MMC0 PA0 to PA13If external SDMMC0 interface is not used, bitSDMMC_0 in Boot Configuration Word mustbe set to 1.

    SD-MMC1 PA18 to PA22, PA27to PA30

    If external SDMMC1 Interface is not used, bitSDMMC_1 in Boot Configuration Word mustbe set to 1.

    eMMC SD-MMC0 PA0 to PA10, PA13If external SDMMC0 Interface is not used, bitSDMMC_0 in Boot Configuration Word mustbe set to 1.

    NAND Flash NFC PA0 to PA21, PC11 toPC31, PD0 to PD8

    Field NFC in Boot Configuration Word mustbe set to "01". IOSET2 is selected. (SeeNotes below)

    QSPI Flash QSPI0 PA0 to PA5Field QSPI_0 in Boot Configuration Wordmust be set to "00". IOSET1 is selected. (SeeNotes below)

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 31

  • Memory Type Interface PIO Comments

    PA14 to PA19Field QSPI_0 in Boot Configuration Wordmust be set to "01". IOSET2 is selected. (SeeNotes below)

    PA22 to PA27Field QSPI_0 in Boot Configuration Wordmust be set to "10". IOSET3 is selected. (SeeNotes below)

    QSPI1 PB5 to PB10

    Need to tie DIS-BOOT pin to GND. BitsQSPI_1 in Boot Configuration Word must beset to "01". IOSET2 is selected. (See Notesbelow)

    SPI Flash

    SPI0

    PA14 to PA17Bits SPI_0 in Boot Configuration Word mustbe set to "00". IOSET1 is selected. (SeeNotes below)

    PA30, PA31, PB0,PB1

    Bits SPI_0 in Boot Configuration Word mustbe set to "01". IOSET2 is selected. (SeeNotes below)

    SPI1

    PA22 to PA25Bits SPI_1 in Boot Configuration Word mustbe set to "01". IOSET2 is selected. (SeeNotes below)

    PC1 to PC4Bits SPI_1 in Boot Configuration Word mustbe set to "00". IOSET1 is selected. (SeeNotes below)

    Note: For these external memory configurations, set the EXT_MEM_BOOT_ENABLE bit to "1" in BootConfiguration Word.

    Note: The Boot Configuration Word allows several customizations of the boot sequence. For details,refer to the section "Boot Configuration" in the SAMA5D2 datasheet, document no. DS60001476.

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 32

  • 8. Debug ConsiderationsThe SAMA5D27 SOM1 JTAG access is disabled during the execution of the ROM code sequence. It isre-enabled when jumping into SRAM when a valid code has been found on an external NVM, at the sametime the ROM memory and fuses are hidden. If no valid boot is found on an external NVM, the ROM code

    enables the USB connection and one UART serial port starts the standard SAM-BA monitor locks access to the ROM memory re-enables the JTAG connection

    The SAMA5D27 SOM1 has multiple debug and JTAG settings. For more information, refer to theSAMA5D2 datasheet, document no. DS60001476, SECUMOD JTAG Protection Control Register,"Customer Fuse Matrix" and "Special Function Bits".

    The JTAG I/O set can be configured. For correct operations, the I/O set to be used is JTAG_IOSET_3,i.e., the field JTAG_IO_SET in the Boot Configuration Word must be written with value '2'.(1)

    Note: Due to IO conflict on line PA22, JTAG_IOSET_4 must not be implemented when SDMMC1 isused as an NVM boot media. See the SAMA5D2 datasheet, document no. DS60001476, BootConfiguration Word.

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 33

  • 9. Electrical CharacteristicsThis section provides an overview of the electrical characteristics of the SAMA5D27 SOM1 module.Absolute maximum ratings for the SAMA5D27 SOM1 module are listed below. Exposure to thesemaximum rating conditions for extended periods may affect device reliability. Functional operation of themodule at these or any other conditions, above the parameters indicated in the operation listings of thisspecification, is not implied.

    9.1 Absolute Maximum RatingsTable 9-1.Absolute Maximum Ratings

    Parameter Conditions Min. Max.

    Storage Temperature -60C +150C

    Maximum Operating Temperature -40C +85C

    Voltage on Inputs Pins With respect to ground -0.3V +4.0V

    Maximum Voltage

    On VDDIN_3V3 Pads +4.0V

    On VDDBU Pad +4.0V

    On VDDSDHC Pad +4.0V

    On VDDISC Pad +4.0V

    Important: Stresses beyond those listed under Absolute Maximum Ratings may causepermanent damage to the device. This is a stress rating only and functional operation of thedevice at these or other conditions beyond those indicated in the operational sections of thisspecification is not implied. Exposure to absolute maximum rating conditions for extendedperiods may affect device reliability.

    9.2 Operational CharacteristicsThe following characteristics are applicable to the operating temperature range TA = -40C to +85C,unless otherwise specified.

    Table 9-2.Table 7. Power Supplies Operating Conditions

    Pad Parameters Conditions Min. Typ. Max.

    VDDIN_3V3DC Supply 3.0V 3.3V 3.6V

    Maximum InputCurrent 450mA

    VDDBUDC Supply Must be established first or atthe same time as VDDIN_3V3. 1.65V 3.3V 3.6V

    Maximum InputCurrent 0.1 mA

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 34

  • Pad Parameters Conditions Min. Typ. Max.

    VDDSDHCDC Supply SDHC I/Os Lines 1.65V 3.3V 3.6V

    Maximum InputCurrent 30mA

    VDDISCDC Supply ISC I/Os Lines 1.65V 3.3V 3.6V

    Maximum InputCurrent 30mA

    9.3 DC Electrical Characteristics

    9.3.1 Standard InterfacesThe following characteristics are applicable to the operating temperature range TA = -40C to +85C,unless otherwise specified.

    Table 9-3.DC Electrical Characteristicsfor GPIO Inputs

    Pad Parameters Conditions Min. Typ. Max.

    VILLow-level InputVoltage All GPIO @ 3.3V -0.3V 0.4V

    VIHHigh-level InputVoltage All GPIO @ 3.3V 2.3V 3.6V

    VOLLow-level OutputVoltage IO Max. 0.41V

    VOHHigh-level OutputVoltage IO Max. 2.9V --

    IILLow-level InputCurrent All GPIO @ 3.3V -1A 1A

    IIHHigh-level InputCurrent All GPIO @ 3.3V -1A 1A

    IOLLow-level OutputCurrent

    All GPIO @ 3.3V / Low -2mA --

    All GPIO @ 3.3V / High -32mA --

    IOHHigh-level OutputCurrent

    All GPIO @ 3.3V / Low 2mA

    All GPIO @ 3.3V / High 32mA

    RPULLUP Pull-up ResistorsAll GPIO @ 3.3V and PDxx inAD mode. 280k 380k 480k

    All IOs in GPIO mode @3.3V. 40k 66k 130k

    RPULLDOWNPull-downResistors

    All GPIO @ 3.3V and PDxx inAD mode 280 k 380k 480k

    All IOs in GPIO mode @3.3V. 40k 77k 160k

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 35

  • Note: This table applies to all the following pads: PA0PA31, PB0PB31, PC0PC31, PD0PD8, PD19-PD30.

    9.3.2 Other PIOsThe following characteristics are applicable to the operating temperature range TA = -40C to +85C,unless otherwise specified.

    Table 9-4.Table 7. DC Electrical Characteristics for System Inputs

    Pad Parameters Conditions Min. Typ. Max.

    VILLow-level InputVoltage DIS_BOOT 1.0V

    VIHHigh-level InputVoltage DIS_BOOT 2.3V

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 36

  • 10. Mechanical Characteristics

    10.1 Module DimensionsThe SAMA5D27 SOM1 has dimensions of 40mm x 38mm with the specific following mechanicalcharacteristics.

    Figure 10-1.System-On-Module Dimensions

    123456789101112131415161718192021222324252627282930313233343536373839404142

    43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88

    169

    168

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    131

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    172

    171

    170

    127126125124123122121120119118117116115114113112111110109108107106105104103102101100

    9998979695949392919089

    130129128

    (TP1) (TP2)

    (TP7)

    (TP9)

    (TP10)

    (TP5)

    (TP6)

    (TP4)

    (TP3)

    (TP8)

    177178

    179

    180

    181

    184183

    185

    186

    182

    PIN 1 CORNERE1

    D1 D2

    E2S

    A1

    TOP

    VIEW

    P1b

    aaa

    P2f ff f x n

    E

    D

    e

    B

    BOTT

    OM

    VIE

    W

    P2Eb

    P2Ea jjjjjj x m

    Pads :Body :Pads Pitch :

    17640 x 38 x 2.80

    0.8A11SAMA5D27-SOM1_POD

    02/05/2017

    SAMA5D27-SOM1 DIMENSIONS Drawn by : R C R

    Units: mm

    P1t

    aaa

    P2f fn x

    47 48 8259 70

    4

    31

    4191

    173

    89

    252627

    51 54

    170

    155

    Table 10-1.System-On-Module Dimensions

    SymbolCommon Dimensions

    CommentsMin. Typ. Max.

    Body SizeX E -- 40.000 40.100

    Y D -- 38.000 38.100

    Pad Pitch e -- 0.800 --

    PCB Thickness S 1.150 1.200 1.250

    Total Thickness A1 -- 2.750 2.800

    PCB Angle Hole Diameter(1) B 0.200

    Pad Length(1) Bottom Side P1b 1.500

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 37

  • SymbolCommon Dimensions

    CommentsMin. Typ. Max.

    Top Side P1t 0.800

    Pad Width(1) P2 0.600 Solder Maskdefined 0.550

    Pad Space(1) aaa 0.200

    Opening Drilling Diameterfff

    0.400

    0.400 typicminusmetallization

    Pad Count n 176

    Edge Center toCenter

    X E1 37.550 37.630 37.700

    Y D1 34.400 34.480 34.550

    X E2 35.550 35.630 35.700

    Y D2 32.400 32.480 32.550

    Pad Axis to Edge(1)X P2Ea 2.000

    Y P2Eb 2.600

    Note:1. Tolerances are defined upon:

    IPC A600 - Class2 IPC 2615

    Warning: Test points placed on the bottom side are used for factory test only. It is not possibleto connect external devices on these test points.

    10.2 Module Land PatternThe SAMA5D27 SOM1 Module has the following recommended Land Pattern characteristics.

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 38

  • Figure 10-2.System-On-Module Land Pattern

    Pads :Body :Pads Pitch :

    17640 x 38 x 2.80

    0.8A11SAMA5D27-SOM1_POD

    02/05/2017

    SAMA5D27-SOM1 DIMENSIONS Drawn by : R C R

    LAND PATTERN RECOMMENDATIONS

    PIN 1 CORNER

    S1

    S2

    Wk

    L

    Inside square, keepout areaNo vias, no tracks, no copper are allowed.

    Units: mm

    Table 10-2.System-On-Module Land Pattern Dimensions

    SymbolCommon Dimensions

    CommentsMin. Typ. Max.

    Land Pattern Pad Width W 0.600 Solder MaskDefined0.550

    Land Pattern Pad Length L 2.000

    Land Pattern Pad X Space S1 37.000

    Land Pattern Pad Y Space S2 35.000

    Land Pattern Pad Space k 0.200

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 39

  • 11. Reflow ProfileThe SAMA5D27 SOM1 was assembled using standard lead-free reflow profile IPC/JEDEC JSTD-020.

    The SAMA5D27 SOM1 can be soldered to the host PCB by using the standard leaded and lead-freesolder reflow profile. To avoid damage to the module, follow these recommendations:

    Follow solder reflow recommendations provided in Microchip Technology Application Note AN233Solder Reflow Recommendation (DS00233).

    Do not exceed the peak temperature (TP) of 250C. Refer to the solder paste datasheet for specific reflow profile recommendations. Use no-clean flux solder paste. Use no-clean flux solder paste Use only one flow. If the PCB requires multiple flows, mount the module at the time of the final flow.

    Figure 11-1.Reflow Profile Example used for Soldering SAMA5D27 SOM1 Module on SAMA5D27-SOM1-EK1 board

    Z6

    COO

    L1C3Z8Z7C2Z5Z4C1Z2 Z3Z1

    20

    40

    60

    80

    100

    120

    140

    200

    160

    180

    217,00C

    235,00C

    220

    280

    240

    260

    Tem

    pera

    ture

    (C)

    Time (mm:ss,tt)00:00,00 01:00,00 02:00,00 03:00,00 04:00,00 05:00,00 06:00,00

    #2 PCB mobile rail#4 PCB center#6 PCB f xed rail

    Probe

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 40

  • 12. Ordering InformationTable 12-1.Ordering Information

    Ordering Code Version Package Carrier Type OperatingTemperature Range

    ATSAMA5D27-SOM1 1 176-pin 38x40mm Tray -40C to +85C

    ATSAMA5D27-SOM1-EVAL 176-pin 38x40mm Tray Room temperature

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 41

  • 13. Revision HistoryTable 13-1.SAMA5D27 SOM1 Datasheet, Rev. DS60001521A, Oct-2017

    Changes

    First issue.

    SAMA5D27 SOM1

    2017 Microchip Technology Inc. Datasheet DS60001521A-page 42

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    Architecture

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    ATSAMA5 D27 - SOM1

    System on Module

    Version

    Architecture: SAMA5

    Product Group: D27

    System on Module: SOM

    Version: 1

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    IntroductionFeaturesApplicationsTable of Contents1.Description2.Reference Documents3.Block Diagram4.Pinout4.1.Pinout Overview4.2.Pin List

    5.Functional Description5.1.SAMA5D27 System-In-Package5.2.Power Supplies5.3.System Control5.4.Ethernet PHY5.5.QSPI Memory5.6.EEPROM Memory

    6.Power Supply Connections and Timing Sequences6.1.Power Supply Configuration #16.2.Power Supply Configuration #26.3.Power Supply Configuration #36.4.Power Supply Configuration #4

    7.Booting Guidelines7.1.Boot Process7.2.Boot Configuration7.3.NVM Programming7.4.Boot From External Memory

    8.Debug Considerations9.Electrical Characteristics9.1.Absolute Maximum Ratings9.2.Operational Characteristics9.3.DC Electrical Characteristics9.3.1.Standard Interfaces9.3.2.Other PIOs

    10.Mechanical Characteristics10.1.Module Dimensions10.2.Module Land Pattern

    11.Reflow Profile12.Ordering Information13.Revision HistoryThe Microchip Web SiteCustomer Change Notification ServiceCustomer SupportProduct Identification SystemMicrochip Devices Code Protection FeatureLegal NoticeTrademarksQuality Management System Certified by DNVWorldwide Sales and Service