IntroductionThe STP16CPC26 low voltage 16-bit constant current LED sink driver on the STEVAL-LLL005V1 evaluation board ensures acost effective 6x10 LED matrix with individual LED control.

The LED driver evaluation board includes a jumper to select between powering the board through a standard DC jack input or aUSB Type-C connector, as well as two control switches.

An Android app is also available for enhanced user experience and control.

The SPBTLE-RF very low power module for Bluetooth Smart v4.1 allows communication with the board via your smartphone.

The STM32F030 mainstream ARM Cortex-M0 Value line MCU with 64 Kbytes of Flash, 48 MHz CPU manages driving andtransmission of data over BLE.

Figure 1. STEVAL-LLL005V1 LED matrix evaluation board

Getting started with the LED matrix evaluation board with constant current LED sink driver using Bluetooth Low Energy and Android app

UM2377

User manual

UM2377 - Rev 1 - May 2018For further information contact your local STMicroelectronics sales office.

www.st.com

1 LED matrix evaluation board overview

1.1 Features• Cost effective 16-bit LED driving scheme• Driver for 6x10 LED matrix with individual LED control and row-wise scanning• USB Type-C and DC jack connector for DC input power• Bluetooth Smart connectivity and Android application for hassle free demonstration• Connector for stacking multiple LED drivers in daisy chain configuration• Preconfigured demos (selected through on-board switches):

– with brightness control– with speed control– with blink rate (flashing) control

1.2 Hardware components

Figure 2. STEVAL-LLL005V1 board components

The main evaluation board components are listed below:1. Input DC jack connector2. USB Type-C input connector3. SPBTLE-RF Bluetooth Smart v4.1 module4. STM32F030 MCU5. L7981 switching regulator6. LKD220 low quiescent current and low noise LDO7. STP16CPC26 Low voltage 16-bit constant current LED sink driver8. STR1P2UH7 P-channel Power MOSFET9. Programming connector10. LED matrix11. Connector for stacking additional LED driver matrices

1.3 ArchitectureThe 6x10 LED matrix on the STEVAL-LLL005V1 evaluation board is controlled through the STP16CPC26 lowvoltage 16-bit constant current LED sink driver.

UM2377LED matrix evaluation board overview

UM2377 - Rev 1 page 2/20

Figure 3. 6x10 LED matrix control scheme

Individual LED control is achieved through specific row and column selection, and frame data is transferredbetween the MCU and LED driver via the SPI.

UM2377Architecture

UM2377 - Rev 1 page 3/20

2 LED matrix evaluation board operation

2.1 Configure input power sourceYou can power the evaluation board in one of the following ways:1. standard DC jack input (5V - 20V) – place jumper J3 on “JACK”2. USB Type-C input (of appropriate power rating) – place jumper J3 on “USB”

2.2 Board power upOn power up, the STEVAL-LLL005V1 runs a default demonstration sequence. Use the following procedure toselect from 6 demos, 10 scrolling speed levels, 10 brightness levels and 10 blinking frequencies.

Figure 4. Figure 4: STEVAL-LLL005V1 parameter and option selection

Step 1. Power on or reset the board.Step 2. Press the SW1 button once.Step 3. Select one of the following parameters and corresponding option, or level:

– Press the SW2 button once for pattern selection.– a. Press the SW1 button to scroll through and select a pattern.

b. Press SW2 to confirm the option.The number ‘0’ is displayed briefly before the desired option is activated.

– Press the SW2 button twice for speed selection.a. Press the SW1 button to scroll through and select a speed.

UM2377LED matrix evaluation board operation

UM2377 - Rev 1 page 4/20

b. Press SW2 to confirm the option.The number ‘0’ is displayed briefly before the desired option is activated.

– Press the SW2 button three times for brightness selection.a. Press the SW1 button to scroll through and select a brightness level.b. Press SW2 to confirm the option.The number ‘0’ is displayed briefly before the desired option is activated.

– Press the SW2 button four times for frequency selection.a. Press the SW1 button to scroll through and select a blink frequency.b. Press SW2 to confirm the option.The number ‘0’ is displayed briefly before the desired option is activated.

UM2377Board power up

UM2377 - Rev 1 page 5/20

3 Led Drawer Android application

You can also control the LEDs with an Android app through Bluetooth Smart.

Step 1. Ensure Bluetooth is enabled on your Android deviceStep 2. Run the Led Drawer app

Figure 5. Led Drawer app home screen

Step 3. Click the search buttonThe STEVAL-LLL005V1 evaluation board should appear in the list of available boards.

UM2377Led Drawer Android application

UM2377 - Rev 1 page 6/20

Figure 6. List of available boards

Step 4. Select the STEVAL-LLL005V1 board.A window appears with default values.

UM2377Led Drawer Android application

UM2377 - Rev 1 page 7/20

Figure 7. Set values window

Step 5. Accept the default values and press the SET button.The Draw Mode selection screen appears

UM2377Led Drawer Android application

UM2377 - Rev 1 page 8/20

Figure 8. Draw Mode selection

Step 6. Check the Draw Mode box and press the SUBMIT DETAILS buttonA drawing screen appears

Step 7. Swipe over the pixel boxes to create a pattern

Figure 9. Pattern creation screen

Step 8. Open the overflow menu on top right corner of the screen

UM2377Led Drawer Android application

UM2377 - Rev 1 page 9/20

Figure 10. Overflow menu options

Step 9. Select Control ParametersStep 10. Set Speed Control, Brightness Control and Blinking Control parameters to your liking

Figure 11. Android app control parameter screen

Step 11. Return to the pattern screen and open the overflow menu againStep 12. Select Send Pattern

The pattern is rendered on the LED matrix board with the parameter settings appliedStep 13. Return to the Draw Mode selection screenStep 14. Uncheck the Draw Mode box, enter a text string and press SUBMIT DETAILS

In the example below, the string “STEVAL-LLL005V1” is rendered on the LED matrix board.

UM2377Led Drawer Android application

UM2377 - Rev 1 page 10/20

Figure 12. Draw Mode deselection

UM2377Led Drawer Android application

UM2377 - Rev 1 page 11/20

4 LED matrix evaluation board schematics and bill of materials

4.1 STEVAL-LLL005V1 schematic diagrams

Figure 13. Input power jack and USB Type-C section

SSMM4F24A

2

DA1

B9CC1

DD33B7

JJ22

RR22 D-

TX2-VBUSA9

B2

CC2

SBU1A8 D+ B6

RX1-TX1-A3 B10

A11GND

RX1+

RR77

B3VBUS B4

55..11KK

3

RX2-

1

RX2+

VBUSVCC_USB

ESDA6V1L

5566KK

VBUSA4

A10

1100KK

B11GND B12

VCC_USB

D-

TypeC_Receptacle

A12 GND B1

55..11KK

VSENSE

VCC_USB

CC1

D+A6 SBU2 B8

CC2 B5

A5

TX2+

A7

TX1+A2

RR33

RR11

GNDA1

Input Section

VCC_Jack

D1

CONN JACK PWR

321

JJ11DIODE BRIDGE

-- ++

TypeC_Receptacle

Figure 14. DC-DC step down and LDO regulator section

11uuFF

556600RR

ADJ/NCEN3

CC77

GN

D2

SSTTPPSS22LL3300

4V5LL11 2222uuHH

4477uuFF

CC66

RR66

VCC

CC22

6

IN1DD22

2 SYNC

RR99

VDD

OUT 1

CC33

RR55

222200RR

22kk

EN

3

4V5

UU11

UU22 LLDDKK112200MM3333RR

RR88

5OUT

55..11KKRR44

44..77nnFF

1100uuFFCC44

CC11

447700ppFF

CC552222nnFF

8 VCC

Vre

f

FB5 11uuFF

EP

9

LL77998811

220000RR

4 COMP

7G

ND 4

UM2377LED matrix evaluation board schematics and bill of materials

UM2377 - Rev 1 page 12/20

Figure 15. Microcontroller section

CC1122

VDD

STP_LE

SSTTMM3322FF003300CC88TT66

STP_SDOSTP_SDI

PF1

_OS

C_O

UT

7

110000nnFFPPBB11

42

PB11

PA12

12PA313

VS

S_2

23

VD

D_2

24

3

PB2

47V

SS

_3

SWDIO

PB1

PB0

CC1133

20

PB10 21

11PA2

17

33

48V

DD

_3

CC1100110000nnFF

38 PA1437

STP_OE

PF0

_OS

C_I

N6

110000nnFF

BLE_SPI_IRQ

PB2

18PB1 19

CC1111

29

PB15

PB7 43

41

PF7

25

PC

14_O

SC

32_I

N4

PA1132

PA8

40

45

CC99

44B

OO

T0

PB4

SSWW11CC2211

110000nnFF

PB12

SSWW22

SWCLK

PA0

BLE_SPI_MISOBLE_SPI_MOSI

31 PA930

10PA1

PPBB22

26

PC

15_O

SC

32_O

UT

5

VS

SA

9V

DD

A

BLE_SPI_RESETBLE_SPI_CS

VD

D_1

PB3 39

BLE_SPI_CLK

PB1

PB6

15PA6

PB2

27PB13

PA4

PA10

2

PA15

PB8

110000nnFF

22CC2

VSENSE

PF6

35

16PA7

110000nnFF

nRS

T

8

14PA5

28PB14 STP_CLK

PC

13

1

PB9 46

36

CC1

BLE_GPIO_2

PB5

PA1334

Figure 16. Input power selection, board extension and programming connector section

4V5

10

VCC_USB

Male Connector

12345678STP_OE

13579

STP_SDI

SWCLK

VDD

STP_CLK

VDD2468

HEADER 5X2

Programming Connector

Input Selection Jumper

STP_LE

CON3

123

nRST

J5SWDIO

VCCVCC_Jack

STP_SDO

CON8

JJ33

J4

UM2377STEVAL-LLL005V1 schematic diagrams

UM2377 - Rev 1 page 13/20

Figure 17. SPBTLE-RF section

BLE_SPI_MOSI

BLE_SPI_MISO

BLE_GPIO_2

1100uuFFCC88

SPI_IRQ

5 Vin

SSPPBBTTLLEE--RRFF11

SPI_MOSI

8

BLE_SPI_CLK

BLE_SPI_IRQ

BLE_SPI_CS

BLE_SPI_RESET

UU44

GPIO_23 ANA_TEST 0

4

BT_RESET

10

VDD

1 EXT_LPCLK

2

GN

D6

SPI_MISO

7SPI_CLK

SPI_CS9

Figure 18. LED driver and LEDs section

1100KK

LLEEDD

LLEEDD

RR1144

DD2277

SSTTRR11PP22UUHH77

LLEEDD

LLEEDD

OU

T2

8O

UT3

LLEEDD

RR1155

DD3377

LLEEDD

LLEEDD

OU

T15

20

DD1166

LLEEDD

CC1177

LE 4

5O

UT0

LLEEDD

DD5533

LLEEDD

17

OU

T914

LLEEDD

STP_OE

DD5588

RR2222

3CLK

RR1122

DD4433

LLEEDD

OU

T6

DD4444

DD4400

CC1155

DD3322

1100RR

DD5500

DD3399

LLEEDD

SSTTPP1166CCPPCC2266

SSTTRR11PP22UUHH77

LLEEDD

LLEEDD

DD3311

LLEEDD

DD3333

1100KK

LLEEDD

QQ66

DD4488

LLEEDD

CC1144

CC2200

DD5522

LLEEDD

OU

T712

LLEEDDLLEEDD

RR1177

DD4477

DD88

DD1155

LLEEDD

QQ44

DD1122

LLEEDD

DD1177

DD6622

LLEEDD

DD2211

LLEEDD

OU

T12

OU

T11

16

DD6633

LLEEDD

DDNNMM

LLEEDD

DD1144

DD3388

OU

T813

LLEEDD

OU

T10

15

DD1111

LLEEDD

DD3300

LLEEDD

1100KK

OE

DD3355

LLEEDD

DDNNMM

DD4455

LLEEDD

DD5544

LLEEDD

STP_LE

LLEEDD

SSTTRR11PP22UUHH77

RR2233

DD1199

LLEEDD

DDNNMM

RR1199

DD2244

LLEEDD

DD6600

DD1188

DD4499 DD5511CC1188

LLEEDD

GN

D1

DDNNMM

DD6611

1100RR

LLEEDD

11

SDI 2

1100RR

DD3344

RR2200

CC1166

DD4422

LLEEDD

DD2233

LLEEDD

STP_SDO

DD1100

DD5566

LLEEDD

DD66

DD2200

LLEEDD

UU55

DDNNMM

LLEEDD

RR1111

LLEEDD

21

SDO

LLEEDD

DD5577

LLEEDD

QQ22

1100RR

R-EXT23

VDD24

STP_CLKSTP_SDI

7

1100RR

VDD

110000nnFF

QQ55

OU

T4

OU

T5

DD4411

LLEEDD

RR1133 DD2266

DD55

SSTTRR11PP22UUHH77

SSTTRR11PP22UUHH77

1100RR

LLEEDD

DD77

RR11661100KK

RR1188

22

4V5

LLEEDD

1100KK

LLEEDD

6O

UT1

LLEEDD

DD5599DD5555

19

DD2255 DD2288

DDNNMM

DD2299

DD2222

QQ11DD1133

RR2211

222200RR

CC1199

1100KK

LLEEDD

LLEEDD

DD99

LLEEDD

10

OU

T13

18

LLEEDD

QQ33

OU

T14

EP

25

SSTTRR11PP22UUHH77

DD4466

LLEEDD

9

LLEEDD

LLEEDD

DD3366

LLEEDD

DD44

LLEEDD

UM2377STEVAL-LLL005V1 schematic diagrams

UM2377 - Rev 1 page 14/20

4.2 Bill of materials

Table 1. STEVAL-LLL005V1 bill of materials

Item Q.ty Ref. Part/Value Description Manufacturer Order code

1 1 C1 10 µF, 35 V, X7R,±20%, SMD, 1206 Ceramic capacitor ANY ANY

2 1 C2 47 µF, 16 V, X5R,±20%, SMD, 1206 Ceramic capacitor ANY ANY

3 1 C3 22 nF, 50 V, X7R,±10%, SMD, 0805 Ceramic capacitor ANY ANY

4 2 C4, C5 1 µF, 16 V, X7R,±10%, SMD, 0805 Ceramic capacitors ANY ANY

5 1 C6 470 pF, 50 V, X7R,±10%, SMD, 0805 Ceramic capacitor ANY ANY

6 1 C7 4.7 nF, 50 V, X7R,±10%, SMD, 0805 Ceramic capacitor ANY ANY

7 1 C8 10 µF, 10 V, X5R,±10%, SMD, 0805 Ceramic capacitor ANY ANY

8 7

C9, C10,C11, C12,C13, C20,C21

100 nF, 50 V, X7R,±20%, SMD, 0805 Ceramic capacitors ANY ANY

9 6C14, C15,C16, C17,C18, C19

DNM - - -

10 1 DA1 ESDA6V1, 6.1 V,Transil, SOT23

DUAL TRANSILARRAY FOR ESDPROTECTION

ST ESDA6V1L

11 1 D1 1.5 A, SMD Diode bridge Fairchild DF01S

12 1 D2 STPS2L, 30 V/1 A,SMA

Low drop powerSchottky rectifier ST STPS2L30A

13 1 D3 SMM4F24A, 24 V,Transil, STmite Flat

400 W TVS in flatpackage ST SMM4F24A-TR

14 60 D4 to D63 120 mA, 6500 K,3014 White LED Lumileds L130-6580001400001

15 1 J1 DC INCONNECTOR DC power jack CUI Inc PJ-102AH

16 1 J2 Surface mount, rightangle, TH USB TypeC Wurth Electronics

Inc 632723100021

17 1 J3 3 pins, 2.54 mm,pitch male Input power selector ANY ANY

18 1 J4 8 pins, 2.54 mm,pitch male Extension connector ANY ANY

19 1 J5 5x2 box type, 1.27mm, pitch male Debug connector CNC Tech 3220-10-0100-00

20 1 L1 22 µH, 1.75 A,±20%, SMD

Surface mountinductor Eaton DR74-220-R

21 6 Q1, Q2, Q3,Q4, Q5, Q6 P-MOS, SOT-23 P-channel STripFET

H7 Power MOSFET ST STR1P2UH7

22 3 R1, R2, R5 5.1 k, 1/8 W, ±1%,SMD, 0805 Resistors ANY ANY

UM2377Bill of materials

UM2377 - Rev 1 page 15/20

Item Q.ty Ref. Part/Value Description Manufacturer Order code

23 1 R3 56 k, 1/8 W, ±1%,SMD, 0805 Resistor ANY ANY

24 1 R4 2 k, 1/8 W, ±10%,SMD, 0805 Resistor ANY ANY

25 1 R6 200 R, 1/8 W, ±10%,SMD, 0805 Resistor ANY ANY

26 1 R7 10 k, 1/8 W, ±1%,SMD, 0805 Resistor ANY ANY

27 1 R8 560 R, 1/8 W, ±1%,SMD, 0805 Resistor ANY ANY

28 2 R9, R23 220 R, 1/8 W, ±1%,SMD, 0805 Resistors ANY ANY

29 6R11, R12,R13, R14,R15, R16

10 k, 1/8 W, ±10%,SMD, 0805 Resistors ANY ANY

30 6R17, R18,R19, R20,R21, R22

10 R, 1/8 W, ±10%,SMD, 0805 Resistors ANY ANY

31 2 SW1, SW2 SMD Push button Panasonic EVP-AA402W

32 1 U1 3 A, L7981,VFQFPN8

Step-down switchingregulator ST L7981TR

33 1 U2 200 mA, LDK120,SOT323-5L

Low quiescentcurrent very lownoise LDO

ST LDK120M33R

34 1 U3 STM32F030C8T6,LQFP48

Mainstream ARMCortex-M0 Value lineMCU

ST STM32F030C8T6

35 1 U4 SPBTLE-RF, SMD

Bluetoothlow energymaster/slavenetwork processormodule

ST SPBTLE-RF

36 1 U5 STP16CPC26,TSSOP24 EP

Low voltage 16-bitconstant currentLED sink driver

ST STP16CPC26XTR

UM2377Bill of materials

UM2377 - Rev 1 page 16/20

Revision history

Table 2. Document revision history

Date Revision Changes

04-May-2018 1 Initial release

UM2377

UM2377 - Rev 1 page 17/20

Contents

1 LED matrix evaluation board overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2 Hardware components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.3 Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2 LED matrix evaluation board operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2.1 Configure input power source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.2 Board power up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 Led Drawer Android application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

4 LED matrix evaluation board schematics and bill of materials . . . . . . . . . . . . . . . . . . . . .12

4.1 STEVAL-LLL005V1 schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.2 Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

UM2377Contents

UM2377 - Rev 1 page 18/20

List of figuresFigure 1. STEVAL-LLL005V1 LED matrix evaluation board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Figure 2. STEVAL-LLL005V1 board components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Figure 3. 6x10 LED matrix control scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Figure 4. Figure 4: STEVAL-LLL005V1 parameter and option selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Figure 5. Led Drawer app home screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Figure 6. List of available boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Figure 7. Set values window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Figure 8. Draw Mode selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Figure 9. Pattern creation screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Figure 10. Overflow menu options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Figure 11. Android app control parameter screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Figure 12. Draw Mode deselection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Figure 13. Input power jack and USB Type-C section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Figure 14. DC-DC step down and LDO regulator section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Figure 15. Microcontroller section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Figure 16. Input power selection, board extension and programming connector section. . . . . . . . . . . . . . . . . . . . . . . . . 13Figure 17. SPBTLE-RF section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Figure 18. LED driver and LEDs section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

UM2377List of figures

UM2377 - Rev 1 page 19/20

IMPORTANT NOTICE – PLEASE READ CAREFULLY

STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to STproducts and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. STproducts are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement.

Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design ofPurchasers’ products.

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ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners.

Information in this document supersedes and replaces information previously supplied in any prior versions of this document.

© 2018 STMicroelectronics – All rights reserved

UM2377

UM2377 - Rev 1 page 20/20