Evaluates: USB2GPIOUSB2GPIO# Adapter Board
General DescriptionThe USB2GPIO# adapter board is designed to work with Maxim’s Munich GUI and to connect to various EV kit or Pmod boards with Pmod™ compatible connectors for I2C/SPI/GPIO communication to test and evaluate different Maxim ICs. This document explains how the USB2GPIO# adapter board receives commands from a laptop through the USB to create an I2C/SPI/GPIO interface. The Maxim USB2GPIO# board requires the Munich GUI which can be downloaded from Maxim’s website free of charge. The USB2GPIO# design is powered directly from the USB bus power (5V) and integrates two low-power, 1.2A, PWM step-down DC-DC converters (MAX1556) to provide programmable VCC voltages of 1.8V, 2.5V, 3.3V, or 5.0V. A dual, high-speed, USB-to-multipurpose UART/FIFO IC (FT2232HQ), high-speed USB switches (MAX4983), and a 4K MICROWIRE-compatible serial EEPROM are the other ICs on this adapter board. USB2GPIO# is designed to supersede USB2PMB1# and USB2PMB2# adapters and includes two connectors; connector X3 is a 12-pin connector which supports either I2C with 6 GPIO pins, or SPI with 4 GPIO pins, and is fully compatible with previous adapters and low-pin count EV kit or Pmod boards. This connector is controlled from the Munich GUI. The addition of another connector, X2, which is a 20-pin connector allows either 16 extra GPIO connections or a second SPI port and 12 extra GPIO connections. This 20-pin connector is NOT controlled by Munich GUI but is for use with future EV kits and will be controlled by the relevant EV kit GUIs.This USB2GPIO# adapter board can be used to enable USB-to-I2C/SPI interface for any Pmod-compatible plug-in peripheral modules such as the Maxim MAX14001PMB#, and MAXREFDES12 – Corona reference designs. In addition, it can be ordered together as an evaluation system (EV system) with different EV kits, such as MAX14001EVKIT#. Note that an “EV system” is an EV kit combined with an interface board, such as a USB2GPIO# and EV kit GUI software. Ordering information for EV systems is included in the EV kits’ corresponding data sheet. Refer to the appropriate EV kit data sheet for quick start and detailed operating instructions.The USB2GPIO# has been tested on Windows® 7, Windows 8, and Windows 10 system using Munich GUI, Version 2.17 or later.
319-100131; Rev 0; 1/18
Ordering Information appears at end of data sheet.
Windows and Windows XP are registered trademarks and registered service marks of Microsoft Corporation.Pmod is a trademark of Digilent Inc.
Features ● USB-to-I2C/SPI/GPIO Interface ● Small PCB area ● Pmod-Compatible Form Factor
Figure 1. USB2GPIO# Board
Maxim Integrated │ 2www.maximintegrated.com
Evaluates: USB2GPIOUSB2GPIO# Adapter Board
Quick StartRequired Equipment
● PC with Windows OS (Windows 7, Windows 8, or Windows 10) with a USB port
● USB2GPIO# board ● A-to-Micro-B USB cable (not supplied) ● Munich software V2.17 or later ● Supported I2C or SPI interface device for communication
like MAX14001PMB# board
ProcedureThe USB2GPIO# is fully assembled and tested. Follow the steps below to verify board operation:1) Go to www.maximintegrated.com/evkitsoftware
to download the most recent version of the Munich GUI software, MUNICH GUI. Save the software to a
temporary folder and decompress the Munich_GUI-SetupV2.17.zip file.
2) Connect the USB cable between the USB2GPIO# board and the PC; the USB driver is installed automatically.
3) Ensure that the companion SPI interface device’s jumper settings are correct. Refer to your companion device’s documentation.
4) Connect the USB2GPIO# board’s 2 x 6-pin, right-angle connector to the companion device’s 2 x 6-pin, right-angle header, as shown in Figure 2.
5) Once the USB2GPIO# board is connected to the companion device, open the MUNICH GUI.exe (double-click) software.
6) Start the Munich GUI software and select the tab sheet that corresponds to the companion device. Follow instructions in the companion device data sheet to test it in conjunction with USB2GPIO#.
Figure 2. USB2GPIO# Board Connected with MAX14914PMB#
Maxim Integrated │ 3www.maximintegrated.com
Evaluates: USB2GPIOUSB2GPIO# Adapter Board
Detailed Description of Hardware The USB2GPIO# board uses the FT2232HQ (U1), a USB 2.0 high-speed (480Mbps)-to-UART/FIFO IC, to process commands sent by a program running on the PC. Each particular EV kit has its own custom software specific to that kit. The operation of this board is USB-to-dual-channel I2C and SPI engine with additional GPIO channels. The subsystem block diagram and simplified power tree are shown in Figure 3.The VCCIO and +3.3V voltage supplies are generated by two MAX1556ETBs (U5 and U6), 1.2A, highly efficient PWM step-down DC-DC converters. The 5V supply volt-age input for these ICs is provided by the Micro-USB supply terminal available from the laptop. The 3V3 sup-ply provides power to the FDTI chip’s VREGIN pin and
its internal oscillator through an LC filter, and the 4K MICROWIRE EEPROM (93LC66BT). The USB-to-I2C/SPI engine is powered by 3.3V at the VREGIN pin and the core voltage of 1.8V for the IC is generated at VREGOUT. This VCORE is used within the FTDI IC itself for its internal logic processes and there is an external 12MHz crystal across OSCI and OSCO pins of the FTDI IC. See USB2GPIO# Adapter Board Schematic for details.
Pmod and Connector Supply Voltages The USB2GPIO# is designed to supply power (V_OUT) to external boards through the connectors X2 and X3. This voltage is defined by the type of board connected to X3, and when the user selects that tab in the Munich GUI, V_OUT is automatically set to the correct level, either 1.8V, 2.5V, 3.3V, or 5.0V.
Figure 3. USB2GPIO# Subsystem Block Diagram
USB
FT2232HQU1
SWITCHES MAX4983, U2, U4
DC-DCMAX1556, U5
DC-DCMAX1556, U6
12-PINX3
20-PINX2
+5V
VCCIO
+3V3
V_OUT
SPI/I2C
V_OUT
GPIO
SELE CT VOLTAGE OUTPUTM1 - M5
V_OUT
VCCIO
+5V
M3
M1
VCCIO
+3V3
Maxim Integrated │ 4www.maximintegrated.com
Evaluates: USB2GPIOUSB2GPIO# Adapter Board
Figure 4 shows the pin configuration for the 12-pin SPI/I2C-compatible Pmod connector on the USB2GPIO# board which aligns to the pin configuration for the connector found on companion Pmod boards such as MAX14001PMB#. The connector type is female on the USB2GPIO# board and male type on the companion Pmod boards.Figure 5 shows the pin configuration for the 20-pin GPIO-compatible connector on the USB2GPIO# board which aligns to the pin configuration for the connector found on companion EV kit boards. The connector type is female
on the USB2GPIO# board and male type on the companion EV kit boards. Note that this connector is NOT used by the Munich GUI, but by the appropriate EV kit GUI. The pinout for this connector includes allowing for an extra SPI port should the EV kit require this functionality.
Figure 4. X3: Pmod SPI/I2C Connector Pin ConfigurationFigure 5. X2: GPIO Connector Pin Configuration
1 7
2 8
3 9
4 10
5 11
6 12
SPI/I2C PIN CONFIGURATION
CS/IO
MOSI/IO
MISO/SCL
SCLK/SDA
GND
V_OUT
IO
IO
IO
IO
GND
V_OUT
19 20
17 18
15 16
13 14
11 12
9 10
GPIO PIN CONFIGURATION
GND
IO
IO
IO
IO
CS/IO
GND
IO
IO
IO
IO
IO
7 8
5
3 4
1 2
MISO/IO
MOSI/IO
SCLK/IO
V_OUT
IO
IO
IO
V_OUT
6
Maxim Integrated │ 5www.maximintegrated.com
Evaluates: USB2GPIOUSB2GPIO# Adapter Board
Figure 6 shows the top view of the USB2GPIO# board, with the different connectors and the pin 1 identifiers. Note that there are no jumpers or shunts on this board, all configuration is done under software control. Care should be taken to only insert the boards in the correct way as the connectors are not keyed to avoid false
insertions—reversing the connections (by turning the Pmod board upside down, for example) may result in damage to the USB2GPIO# or the companion board. Two LEDs are included to indicate if the X3 Pmod connector is configured as SPI or I2C.
Figure 6. USB2GPIO# Orientation and Pinouts
#Denotes RoHS compliant.
Ordering InformationPART TYPE
USB2GPIO# Adapter Board
Maxim Integrated │ 6www.maximintegrated.com
Evaluates: USB2GPIOUSB2GPIO# Adapter Board
USB2GPIO# Adapter Board Bill of MaterialsITEM REF_DES DNI/DNP QTY MFG PART # MANUFACTURER VALUE DESCRIPTION COMMENTS
1 C1 - 1C0603C103K5RAC; GRM188R71H103K;C0603X7R500-103KNE
KEMET/MURATA/VENKEL LTD. 0.01UF
CAPACITOR; SMT; 0603; CERAMIC; 0.01uF; 50V; 10%; X7R; -55degC to + 125degC
2 C2, C12, C14 - 3 GRM21BR71C475KA73 MURATA 4.7UF
CAPACITOR; SMT (0805); CERAMIC CHIP; 4.7UF; 16V; TOL=10%; MODEL=GRM SERIES; TG=-55 DEGC TO +125 DEGC; TC=X7R
3 C3, C4, C8, C13, C15-C22, CX3B - 13 C0603C104K5RAC;
C1608X7R1H104K KEMET; TDK 0.1UF
CAPACITOR; SMT (0603); CERAMIC CHIP; 0.1UF; 50V; TOL=10%; TG=-55 DEGC TO +125 DEGC; TC=X7R;
4 C5, C6 - 2C0603C330J5GAC; GRM1885C1H330JA01; ECU-V1H330JCV
KEMET/MURATA/PANASONIC 33PF
CAPACITOR; SMT; 0603; CERAMIC; 33pF; 50V; 5%; C0G; -55degC to + 125degC; 0 +/-30PPM/degC
5 C7, CP1, CP5, CX3A - 4
CL21A106KOQNNN; GRM21BR61C106KE15; EMK212ABJ106KD
SAMSUNG ELECTRONICS; MURATA; TAIYO YUDEN 10UF
CAPACITOR; SMT (0805); CERAMIC CHIP; 10UF; 16V; TOL=10%; TG=-55 DEGC TO +85 DEGC; TC=X5R
6 CP2, CP6 - 2
C0805C226M9PAC; GRM21BR60J226ME39; JMK212BJ226MG; CL21A226MQCLQN
GENERIC PART 22UF
CAPACITOR; SMT (0805); CERAMIC CHIP; 22UF; 6.3V; TOL=20%; TG=-55 DEGC TO +125 DEGC; TC=X5R
7 CP3, CP7 - 2C0603C102K5RAC; GRM188R71H102KA01; C0603X7R500-102KNE
KEMET/MURATA/VENKEL 1000PF
CAPACITOR; SMT; 0603; CERAMIC; 1000pF; 50V; 10%; X7R; -55degC to + 125degC; +/-15% from -55degC to +125degC
8 CP4, CP8 - 2C0603C105K3PAC; GRM188R61E105KA12; 06033D105KAT2A
KEMET; MURATA; AVX 1UF
CAPACITOR; SMT (0603); CERAMIC CHIP; 1UF; 25V; TOL=10%; TG=-55 DEGC TO +85 DEGC;
9 FB1-FB3 - 3 BLM21PG331SN1 MURATA 330INDUCTOR; SMT (0805); FERRITE-BEAD; 330; TOL=+/-25%; 1.5A
10 I2C, SPI - 2 150060VS75000 WURTH ELECTRONICS INC 150060VS75000
DIODE; LED; WL-SMCW SMD CHIP LED TOP VIEW MONO-COLOR WATER CLEAR; GREEN; SMT (0603); VF=2V; IF=0.02A
11 L1, L2 - 2 B82432T1332K TDK 3.3UHINDUCTOR; SMT (1812); FERRITE CORE; 3.3UH; TOL=+/-10%; 0.9A
12 M1, M3 - 2 NTTFS5116PL ON SEMICONDUCTOR NTTFS5116PLTRAN; POWER MOSFET; PCH; WDFN8; PD-(40W); I-(-20A); V-(-60V)
13 M2 - 1 SI2319DS-T1-E3 VISHAY SILICONIX SI2319DS-T1-E3
TRAN; P-CHANNEL D-S MOSFET; PCH; SOT-23; PD-(0.75W); I-(-2.3A); V-(-40V)
14 M4, M5 - 2 IRLML6346 INTERNATIONAL RECTIFIER IRLML6346TRAN; HEXFET POWER MOSFET; NCH; SOT-23; PD-(1.3W); I-(0.00025A); V-(30V)
15 MT1-MT4 - 4 P440.375 GENERIC PART N/AMACHINE SCREW; SLOTTED; PAN; 4-40IN; 3/8IN; NYLON
16 MT1-MT4 - 4 1902B GENERIC PART N/ASTANDOFF; FEMALE-THREADED; HEX; 4-40IN; 3/8IN; NYLON
17 Q1 - 1 ECS-120-20-33 ECS INC 12MHZ CRYSTAL; SMT; 20PF; 12MHZ; +/-50PPM; +/-50PPM
Maxim Integrated │ 7www.maximintegrated.com
Evaluates: USB2GPIOUSB2GPIO# Adapter Board
USB2GPIO# Adapter Board Bill of Materials (continued)ITEM REF_DES DNI/DNP QTY MFG PART # MANUFACTURER VALUE DESCRIPTION COMMENTS
18 Q2, Q3 - 2 PMGD280UN NXP PMGD280UN
TRAN; DUAL N-CHANNEL UTRENCHMOS ULTRA LOW LEVEL FET; NCH; SOT-363; PD-(0.4W); I-(0.87A); V-(20V)
19 R1, R9-R11, R16, R17, RP3, RP4 - 8 CRCW060310K0FK;
ERJ-3EKF1002 VISHAY DALE; PANASONIC 10KRESISTOR; 0603; 10K; 1%; 100PPM; 0.10W; THICK FILM
20 R2 - 1 CRCW060315K0FK VISHAY DALE 15KRESISTOR, 0603, 15K OHM,1%, 100PPM, 0.10W, THICK FILM
21 R3 - 1 CRCW060312K1FK VISHAY DALE 12.1KRESISTOR; 0603; 12.1K OHM; 1%; 100PPM; 0.1W; THICK FILM
22 R4, R5 - 2 CRCW060310R0FK; MCR03EZPFX10R0 VISHAY DALE/ROHM 10
RESISTOR; 0603; 10 OHM; 1%; 100PPM; 0.10W; THICK FILM
23R6, R12-R15, R18-R37, RAD9, RAD10
- 27 CRCW040210K0FK; RC0402FR-0710K VISHAY DALE; YAGEO PHICOMP 10K
RESISTOR; 0402; 10K; 1%; 100PPM; 0.0625W; THICK FILM
24 R7 - 1 CRCW04022K20FK;RC0402FR-072K2L VISHAY DALE/YAGEO PHICOMP 2.2K
RESISTOR, 0402, 2.2K OHM, 1%, 100PPM, 0.0625W, THICK FILM
25 RL1, RL2 - 2 ERJ-2GEJ471X PANASONIC 470RESISTOR; 0402; 470 OHM; 5%; 200PPM; 0.10W; THICK FILM
26 RP1, RP2 - 2 CRCW0603100RFK; ERJ-3EKF1000 VISHAY DALE/PANASONIC 100
RESISTOR; 0603; 100 OHM; 1%; 100PPM; 0.10W; THICK FILM
27 U1 - 1 FT2232HQ FUTURE TECHNOLOGY DEVICES INTL LTD. FT2232HQ
IC; MMRY; DUAL HIGH SPEED USB TO MULTIPURPOSE UART/FIFO; QFN64-EP
28 U2, U4 - 2 MAX4983EEVB+ MAXIM MAX4983EEVB+IC; ASW; HI-SPEED USB 2.0 SWITCH WITH +/- 15KV ESD; UTQFN10
29 U3 - 1 93LC66BT-I/OT MICROCHIP 93LC66BT-I/OTIC; EPROM; 4K MICROWIRE SERIAL EEPROM; SOT23-6
30 U5, U6 - 2 MAX1556ETB+ MAXIM MAX1556ETB+
IC; CONV; PWM STEP-DOWN DC-DC CONVERTER; TDFN10-EP 3X3
31 X1 - 1 ZX62RD-AB-5P8 HIROSE ELECTRIC CO LTD. ZX62RD-AB-5P8
CONNECTOR; MALE; SMT; MICRO-USB CONNECTOR MEETING REQUIREMENTS OF USB 2.0 STANDARD; RIGHT ANGLE; 5PINS
32 X2 - 1 PPTC102LJBN-RC SULLINS ELECTRONICS CORP PPTC102LJBN-RC
CONNECTOR; FEMALE; THROUGH HOLE; BREAKAWAY HEADER; RIGHT ANGLE; 20PINS
33 X3 - 1 PPPC062LJBN-RC SULLINS ELECTRONICS CORP. PPPC062LJBN-RC
CONNECTOR; FEMALE; THROUGH HOLE; 0.1IN CC; HEADER; 2 ROW; RIGHT ANGLE; 12PINS
34 PCB - 1 USB2GPIO_APPS_B MAXIM PCB PCB:USB2GPIO_APPS_B -
TOTAL 106
Maxim Integrated │ 8www.maximintegrated.com
Evaluates: USB2GPIOUSB2GPIO# Adapter Board
USB2GPIO# Adapter Board Schematic
19,2
0 - G
ND9
- CS
7 - M
ISO
5 - M
OSI
3 - S
CLK
1,2
- VCC
SPI
ALL
OTH
ER P
INS
GPI
O
4 - S
DA
6 - V
CC5
- GND
3 - M
ISO
I2C
1 - C
S
4 - S
CLK
SPI
2 - I
O3
- SCL
5 - G
ND6
- VCC
1 - I
O2
- MO
SI
100
IRLM
L634
6IR
LML6
346
10K
NTTF
S511
6PL
NTTF
S511
6PL
VCCI
O
10K
V_O
UT
SI23
19DS
-T1-
E3
10UF
PPTC
102L
JBN-
RC
V_O
UT
0.1U
F
V_O
UT
VCCI
O
10K
MAX
1556
ETB+
3.3U
H
12M
HZ
100
0.1U
F
33PF
33PF
VCCI
O
10K
10K
10K
MAX
4983
EEVB
+
VCCI
OVC
CIO
VCCI
OVC
CIO 0.
1UF
10K
1000
PF
PMG
D280
UN
1UF
PMG
D280
UN
3.3U
H
10UF
10K
10K
10K
10K
10K
10K
0.1U
F
10K
0.1U
F0.
1UF
10K
12.1
K
0.1U
F
2.2K
93LC
66BT
-I/O
T
10
ZX62
RD-A
B-5P
8
1UF
1000
PF
10K
10UF
10K
0.01
UF
10FT
2232
HQ
10K
10K
0.1U
F
330
1.5A
0.1U
F
V_O
UT
330
1.5A
PPPC
062L
JBN-
RC
10K
10K10
K
4.7U
F0.
1UF
10K
10K
10K
0.1U
F
10K
10K
10K
10K
10K
10K
10K
10K
10UF
0.1U
F
MAX
4983
EEVB
+
PMG
D280
UN10
K
10K
PMG
D280
UN
47047
0
MAX
1556
ETB+
330
4.7U
F
4.7U
F
1.5A
22UF
15K
V_O
UT
0.1U
F
22UF
CP1
M4
M5
RP4
M1
M3
RP3 M2
CX3A
X2CX
3B
R37
Q3
CP4
R22
Q1
C5C6
U5
CP3
L1
RP1
RAD9
RAD1
0
U3
R7 R6
R3 R2R1R4 R5
FB1
C1
C3C2
C16
C17
C18
C20
C21
C19
C22
C4
RL1
RL2
SPI
I2C
X1
U1
U6
CP7
FB3
L2
C15
C14
C13
C12
FB2
CP6
RP2
CP8
CP5
U4U2
R11
Q2
Q2
R16 R1
7
Q3
R9 R10
C8C7
X3
R12
R13
R14
R15
R18
R19
R20
R21
R29
R28
R27
R26
R25
R24
R23
R30
R31
R32
R33
R34
R35
R36
CP2
VPLL
ACBU
S3
+5V
BCBU
S7BC
BUS6
BCBU
S5BC
BUS4
BDBU
S0BC
BUS1
BCBU
S2BC
BUS3
BDBU
S1BD
BUS2
BCBU
S0
BDBU
S3
BDBU
S7
BDBU
S5BD
BUS4
BDBU
S6
BCBU
S6BC
BUS5
BCBU
S4
ACBU
S5
+5V
BDBU
S4BD
BUS4
BDBU
S3
BDBU
S5
MO
SI_A
ACBU
S1
BDBU
S0AC
BUS7
ACBU
S3
ACBU
S0
V_O
UT
ACBU
S6
BDBU
S0
ACBU
S5
ADBU
S4AD
BUS5
ADBU
S6AD
BUS7
ACBU
S7
+5V
BCBU
S0BC
BUS1
BCBU
S0 +5V
+3V3
+3V3
+5V
+3V3
+5V
VCO
RE
+5V
ACBU
S6
+3V3
VPHY
VCO
RE
VPLL
VCO
RE
VCO
RE
BDBU
S6
V_O
UT
+5V
CS_A
BDBU
S5BD
BUS6
BDBU
S7
VPHY
SDA_
A/SC
LK_A
BDBU
S3
BDBU
S1BD
BUS1
BDBU
S7
V_O
UT
BCBU
S7
BDBU
S2
+5VBC
BUS2
BCBU
S3
BCBU
S7
MO
SI_A
CS_A
ADBU
S5
ADBU
S7
BCBU
S6BC
BUS5
BCBU
S4BC
BUS3
BCBU
S2
BDBU
S2
SCL_
A/M
ISO
_A
+5V
V_O
UT+3
V3
ACBU
S1
ACBU
S0
ADBU
S4SD
A_A/
SCLK
_A
BCBU
S1
VCO
RE
ADBU
S6
6
321
65
78
4
5678
123
4
2 2019
1817
1615
1413
1211
109
87
65
431
24
13
510 6
112
1
8 4 3
12
45 3
1
6 2
12
AK
AK
1 2 3 4 5
6789
10
26 27 28 29 30 32 33 3416 17 18 19 21 22 23 24
10
48 52 53 54 55 57 58 5938 39 40 41 43 44 45 46
7 8 6263 61
65
15
111525354751
2 360
6 14
3613
20314256
123764
49
50 49
510 6
112
198 47 3
12
12
12
8 3 5
4
1 72 6
9
8 10 3 5
4
1 72 6
9
6
2
1 3
5
4
3
5
4
2
1
123456
789101112
7
9
10
EP
D1INP
LX
PGND
D2SHDN
OUT SS
GND
IN
VCC
VSS
DO
DI
CLKCS
G DS
GSD
GSD
IN
ININININ ININININ
IN IN INININ
IN
ININ
ININ
IN
12 11 10 9 8 7
6 5 4 3 2 1
IN
IN
S DG
S DG
ININ ININ INININ IN ININ IN ININ IN ININ
INININ INININ ININ
ININ IN INININ ININ
ININ
ININ
IN ININ IN
ININ
G
D S
G
D S
ININ
ININ
G
D S
G
D S
NC2
NO2
COM
2
GND
COM
1NO
1
NC1
CB
VCC
EN
IN
NC2
NO2
COM
2
GND
COM
1NO
1
NC1
CB
VCC
EN
EP
D1INP
LX
PGND
D2SHDN
OUT SS
GND
IN
ININ
EP
BCBU
S7BC
BUS6
BCBU
S5BC
BUS4
BCBU
S3BC
BUS2
BCBU
S1BC
BUS0
ACBU
S7AC
BUS6
ACBU
S5AC
BUS4
ACBU
S3AC
BUS2
ACBU
S1AC
BUS0
BDBU
S7BD
BUS6
BDBU
S5BD
BUS4
BDBU
S3BD
BUS2
BDBU
S1BD
BUS0
ADBU
S7AD
BUS6
ADBU
S5AD
BUS4
ADBU
S3AD
BUS2
ADBU
S1AD
BUS0
OSC
O
OSC
I
VCORE
GNDGND
VCCIO
EECS
EECL
KEE
DATA
TEST
VREG
OUT
VREG
IN
VCOREVCORE
GNDGND
RESE
T#
SUSP
END#
PWRE
N#
VCCIO
GNDGND
VCCIO
GNDGND
VCCIO
VPLL
DPDM REF
AGNDVPHY
SH
IELD
109
87
6
54321
IN
IN
IN
Maxim Integrated │ 9www.maximintegrated.com
Evaluates: USB2GPIOUSB2GPIO# Adapter Board
USB2GPIO# Adapter Board—Top Silkscreen
USB2GPIO# Adapter Board—Internal 2
USB2GPIO# Adapter Board—Top
USB2GPIO# Adapter Board—Internal 3
USB2GPIO# Adapter Board PCB Layout Diagrams
1”
1”
1”
1”
Maxim Integrated │ 10www.maximintegrated.com
Evaluates: USB2GPIOUSB2GPIO# Adapter Board
USB2GPIO# Adapter Board—Bottom USB2GPIO# Adapter Board—Bottom Silkscreen
USB2GPIO# Adapter Board PCB Layout Diagrams (continued)
1” 1”
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Evaluates: USB2GPIOUSB2GPIO# Adapter Board
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0 12/17 Initial release —
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