STMicroelectronics STEVAL-LLL002V1 User Manual

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Page 1

UM2381

User manual

Getting started with the evaluation kit for automotive rear lights with pattern

animations based on ALED1262ZT and STM8AF6266

Introduction

The STEV bridge.

It has been designed to test and evaluate ALED1262ZT performance.

The STEVAL-LLL002M1 is a LED array driver system evaluation board with local dimming and diagnostics for automotive applications. It is based on the ALED1262ZT 12-channel LED driver controlled through the STM8AF6266 microcontroller I²C interface.

A 48 red LED matrix is driven by four ALED1262ZT LED drivers.

The on-board A7986A DC-DC converter, accepting standard adapter input voltages with reverse polarity protection, provides the voltages and power for the board operation.

The STEVAL-LLL002V1 evaluation kit jumpers simulate LED open circuit faults and the 4-pin SWIM connector is used to debug and develop the STM8AF6266 microcontroller firmware.

The evaluation kit can operate in bus driven mode (BDM), standalone mode (SAM) and GUI mode.

In the bus driven mode, the board is controlled via on-board push buttons and potentiometers. Commands to the ALED1262ZT driver are sent by STM8A microcontroller over I²C bus.

In the standalone mode, the STEVAL-LLL002V1 evaluation kit is not controlled by the MCU and you can select two possible output configurations using OTP ½ SPDT switch (SW2).

In the GUI mode, the board is connected to a PC via USB-UART bridge and you can observe and control various features of the driver through the graphical user interface.

AL-LLL002V1 evaluation kit consists of the STEVAL-LLL002M1 main board and the STEVAL-LLL002D1 USB-UART

Figure 1. STEVAL-LLL002V1 evaluation kit

UM2381 - Rev 1 - June 2019

For further information contact your local STMicroelectronics sales of

fice.

www.st.com

Page 2

1 Hardware description

1.1 STEVAL-LLL002M1 main board

The STEVAL-LLL002M1 evaluation board includes four ALED1262ZT LED drivers, an 8-bit automotive grade MCU, a SWIM connector to program the MCU, 48 red LEDs, push buttons to switch modes, and potentiometers to control brightness and speed.

The on-board A7986A DC-DC converter voltages and power for the board operation.

, accepting standard adapter input voltages (12 – 24 V), provides the

UM2381

Hardware description

Figure 2. STEV

Figure 3. STEVAL-LLL002V1M main board (bottom side)

AL-LLL002V1M main board (top side)

1.1.1 Chip select (CS) one time programming (OTP)

The STEVAL-LLL002M1 evaluation board has four ALED1262ZT drivers.

The ALED1262ZT LED driver is provided with five one time programming (OTP) memory cells that can be programmed to provide a permanent address to the device, creating a total of 32 driver addresses, that is, at a given time, a maximum of 32 drivers can be connected to the to the MCU via I²C bus.

Table 1.

ALED1262ZT WRITE READ

Default 0x40 0x41

LED driver - U4 0x42 0x43

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STEVAL-LLL002M1 evaluation board: ALED1262ZT addresses

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STEVAL-LLL002D1 USB-UART bridge

ALED1262ZT WRITE READ

LED driver - U5 0x44 0x45

LED driver - U6 0x46 0x47

LED driver - U7 0x48 0x49

On-board J2 is used to select the ALED1262ZT device for OTP. The LED driver is given a particular command over I²C providing 18 V (±1 V) to be applied at the corresponding chip select (CS) pin.

Note: For more information please refer to the ALED1262ZT datasheet on www.st.com.

UM2381

1.2 STEV

The STEV PC and microcontroller.

AL-LLL002D1 USB-UART bridge

AL-LLL002V1 evaluation kit is also equipped with a USB-UAR

Figure 4. STEVAL-LLL002V1D (top side)

Figure 5. STEVAL-LLL002V1D (bottom side)

T bridge for the communication between

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1.3 Evaluation kit block diagram

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Evaluation kit block diagram

Figure 6. STEV

AL-LLL002V1 block diagram

1.4 STEVAL-LLL002V1 key devices

The STEV

• A7986A: a high efficiency step down 250 kHz (programmable up to 1 MHz) switching regulator with max. 3 A

• LM2931: an AEC-Q100 qualified 100 mA LDO regulator designed for automotive environments.

• STM8AF6266: an automotive grade 8-bit microcontroller, featuring 10 MIPS at 16 MHz CPU, advance

• L78L33ACUTR: a three terminal positive regulator. It gives output current up to 100 mA and output voltage

• Diode bridge: at the power supply input ensures board operation regardless of the input voltage polarity.

• 48 red SMD LEDs mounted in a 12x4 matrix to display different patterns. The minimum luminous intensity of

AL-LLL002V1 main devices are:

DC output current. Input voltage varies from 4.5 to 38 V and also depends on the required output. It supports low dropout operation along with zero load current operation. Overcurrent and thermal protection are provided for safe board operation. It powers the red LEDs.

timers, UART, ADC, robust I/O's, nested interrupt controller.

of 3.3 V. The L78L series uses as Zener diode/resistor combination replacement, resulting in a lower quiescent current and lower noise.

a LED is around 3.55 cd with wide viewing angle of 120º and wavelength of 623 nm.

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2 STEVAL-LLL002V1 connections

2.1 Power supply

UM2381

STEVAL-LLL002V1 connections

The STEV

The power source must deliver sufficient current depending on the input voltage for proper functioning.

Reverse voltage protection and input surge protection are provided to avoid any damage.

AL-LLL002V1 evaluation kit is powered by standard 12–24 V DC power adapter.

2.2 Microcontroller SWIM

The STEVAL-LLL002V1M board is equipped with a standard 4-pin SWIM connector allowing to debug and develop the STM8AF6266 microcontroller firmware.

2.3 Jumpers for LED open-circuit simulation

LED errors can be simulated by using J5 to J8 jumpers.

Removing a jumper on J5, J6, J7 and J8 causes LED open-circuit error in D48, D49, D50 and D51 respectively

These simulated errors can be detected in error detection mode: the defective LED is signaled by lighting the adjacent LED on the board in standalone mode, and by flashing the corresponding light in the LED map in GUI mode.

2.4 USB-UART bridge

The STEV

STM8AF6266 and your PC.

It communicates with the main board via UART interface and with PC via USB.

AL-LLL002V1 communicates with the GUI via the USB-UART board, which acts as the bridge between

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3 Operation modes

3.1 Bus driven mode

UM2381

Operation modes

In this mode, STEV

Commands to the ALED1262ZT LED driver are sent by STM8AF6266 microcontroller through I²C interface.

After DC input is applied for the first time, the board goes into free running mode and displays all patterns and modes, one after another.

You can exit from this free running mode using the BCK or FWD button.

AL-LLL002V1 is controlled via on-board push buttons and potentiometers.

3.1.1 Features

In bus driven mode, the board features:

•

Pre-configured patterns (with adjustable brightness/speed) as rolling text, wave effect, super car scanning, dot sequence, etc.

• On-board push buttons to switch between the demos

• Potentiometers as sliders to control the pattern speed or brightness

• Open circuit error simulation using open circuit jumpers (J5-J8)

• Jumper to switch from bus driven mode to standalone mode (J4)

• OTP ½ switch (SW2) to choose between two different predefined pattern in SAM mode

3.1.2 Normal mode

The STEV

In this mode, the MCU sends data over I²C bus to the ALED1262ZT LED driver.

Note: To operate in BDM mode, jumper J4 should be placed.

The bus driven mode main controls are:

• Push-buttons for transition among different demos:

• Potentiometers:

• Open circuit error detection to detect LED failure

Note: On powering up, the evaluation board goes into free running mode displaying pattern changes after a fixed interval of time. You can exit from this mode by pressing FWD or BCK push buttons.

The evaluation board displays different patterns in BDM:

1. Dot Sequence Rail

2. Back Light (all LEDs on)

3. Super Car Scanning Effect - I

4. Alphanumeric Flashing

5. Super Car Scanning Effect - II

6. Alphanumeric Rolling

7. Animation – 3D

8. Horizontal Wave

9. Pattern – I

10. Vertical Wave

11. Diagonal Wave

AL-LLL002V1 evaluation kit enters the bus driven mode (BDM) when powered.

– BCK button: to switch on the previous pattern or mode

– FWD button: to switch on the next pattern or mode

– Brightness and speed control: on rotating potentiometer clockwise/anticlockwise, brightness/speed

among transitions increases/decreases.

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12. Pattern – II

13.

Error Detection

Note: In Alphanumeric Flashing Pattern, you can control the speed only.

In Super Car Scanning Effect – I, Super Car Scanning Effect – II, Animation – 3D, Pattern – I and Pattern – II you cannot control brightness as the ALED1262ZT PWM (7-bit individual channel control) feature is enabled.

3.1.3 Error detection

ALED1262ZT driver is capable of detecting error for open circuit.

The STEV detection mode using FWD or BCK buttons.

Removing jumpers J5, J6, J7 and J8 causes LED open circuit error in D48, D49, D50 and D51 respectively.

The defective LED is signaled by switching on the adjacent LED.

AL-LLL002V1 evaluation kit provides the option to simulate and detect errors by entering the error

Table 2. STEVAL-LLL002V1 error detection mode

Jumper Error in LED Shown on LED

J5 D48 D44

J6 D49 D45

J7 D50 D46

J8 D51 D47

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Bus driven mode

Figure 7. STEV

AL-LLL002V1 evaluation kit: error detection mode (J6 and J7 removed)

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3.2 Standalone mode (SAM)

The STEV is disconnecting the ALED1262ZT LED driver).

In standalone mode configuration, the device is not controlled by the MCU or a controller board.

You can select two possible output configurations using OTP ½ SPDT switch (SW2).

AL-LLL002V1 enters the SAM mode when the driver supply falls belows 3 V (removing jumper J4 that

Figure 8. STEVAL-LLL002V1 evaluation kit: standalone mode (configuration 1)

UM2381

Standalone mode (SAM)

3.2.1 Features

The board enters the standalone mode by removing J4.

This mode mainly features:

•

ALED1262ZT working without external controller

• Two different ouptus

• OTP ½ switch (SW2) to choose a configuration

3.3 GUI mode

The board can be connected to a PC through a USB-UART bridge using the graphical user interface (GUI) to control and evaluate the ALED1262ZT

Figure 9. STEV

AL-LLL002V1 evaluation kit: standalone mode (configuration 2)

driver features.

3.3.1 Features

All the bus driven mode features can also be controlled via GUI that manages also:

• Global brightness control to change the brightness of all the channels

• Frame programming mode and four predefined presets with variable transition time between frames

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Page 9

• Open circuit error detection in "no loop" and in 1 s and 2 s (approx.) loops

•

Read/write configuration register

• Individual channel brightness control

3.3.2 GUI setup

To use the STEV following the procedure below.

Step 1. Install the .exe file on your PC.

Step 2. If the VCP driver is not installed, install it from ...\Program Files\ STMicroelectronics\LED Driver Demo

UM2381

GUI mode

AL-LLL002V1 GUI, you have to install the virtual COM port (VCP) driver on your PC/laptop by

The GUI appears in your program list.

\ST VCP Driver. A 32-bit version and a 64-bit version are included in the setup.

On launching the GUI, the initial screen appears as shown below.

Figure 10. STEVAL-LLL002V1 evaluation kit: GUI initial screen

Step 3. Connect the STEV

AL-LLL002M1 to the PC and power it up.

Step 4. Press [Connect].

The GUI identifies the board and automatically establishes a connection (COM3 is shown as an example in the picture above), otherwise it prompts the user to select the port to which the board is connected.

Step 5. If the GUI does not automatically identify the board, choose the port manually and press [Select].

When the GUI is able to interact with the board, a "Port is open” message is shown.

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3.3.3 Modes

3.3.3.1 Basic mode

The STSW

• Replication of on-board control buttons to select different modes from the GUI

• Buttons to enable/disable on-board push buttons

• Open circuit error detection with different frequencies

• Adjustable global brightness for all the channels

• Control registers write/read (BDM_Conf 1)

• Various flag status reading (BDM_status)

The basic mode has five sections to address different requirements:

• Button control

• Error detection

• Brightness control for all channels

• Configuration registers

• Individual channel ON/OFF control

UM2381

GUI mode

-LLL002GUI basic mode mainly features:

Figure 11. STSW-LLL002GUI basic mode

3.3.3.1.1 Button control

The control buttons replicate the on-board BCK and FWD buttons and are used to toggle among preconfigured demos.

The on-board buttons can be enabled or disabled by pressing

3.3.3.1.2 Error detection

The error detection section demonstrates open circuit error (if any) present in the 12x4 LED matrix.

Error detection frequency can be selected from three options:

•

No loop - error detection is performed just once and the results are displayed till any other button is pressed

• 1 second loop - error detection is performed every 1 s by the drivers and the results are updated in real-time

• 2 second loop - same as 1 second loop but error detection is performed every 2 s

3.3.3.1.3 Brightness control for all channels

Brightness of all the channels is simultaneously changed by varying brightness control for all channel slider.

Brightness can be varied in 256 steps (5% to 100%).

3.3.3.1.4 Configuration registers

The configuration register section represents two registers for the ALED1262ZT LED driver:

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[Enable] or [Disable] respectively.

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GUI mode

• BDM_Conf 1: is common for all ALED1262ZT LED drivers. Y registers.

• BDM_status: gives the status information for a particular LED driver selected from the drop down bar.

For further details, refer to the ALED1262ZT datasheet on www.st.com.

3.3.3.2 Advanced mode

The advanced mode section displays the individual channel brightness control (0% to 100%).

The brightness of each channel can be adjusted through a 7 bit PWM grayscale brightness control according to local dimming register PWM_gain_x.

ou can change the brightness using the scroll bars put in a 12x4 pattern.

ou can set or reset different bits of the

Figure 12. ALED1262ZT configuration register

Figure 13. STSW-LLL002GUI advanced mode

3.3.3.3 Frame programming mode

This mode features:

•

Frame programming to display any arbitrary pattern up to 20 frames with variable transition speed

• Four preconfigured patterns for quick visualization of frame programming mode on the STEVAL-LLL002V1 evaluation kit

Frame programming displays user defined patterns in round robin sequence on the evaluation board. This mode contains a set of 20 (maximum) independent frames and each frame represents one instance of the board LEDs.

The frames can be designed by the user or you can select preconfigured frame patterns using [Presets]. Transition time among frames in milliseconds is set by the value in the [Transition Time] text box.

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UM2381

GUI mode

Figure 14. STSW

-LLL002GUI frame programming mode

3.3.3.3.1 Frame design

A frame on the STSW-LLL002GUI represents LEDs on the evaluation board in a similar fashion. There are a maximum of 20 frames (00 to 19) to be set using

[Set Frame Count]. To design the frames and demonstrate

them on the evaluation board follow the procedure below.

Step 1. Click on the LEDs to configure them.

Step 2. Select the desired brightness using [Frame Brightness].

Step 3. Press the [Play] button for the STSW-LLL002GUI sequence of frames to visualize the whole pattern to

be displayed on the board.

Step 4. Set the required transition time between the frames and press [Program].

Note: Transition time has to be set between 10 to 10000 milliseconds. If a wrong value in entered in the box, the color

of the text box changes to red and no command is sent to the board.

3.3.3.3.2 Using preconfigured frame patterns

In frame programming mode, four preconfigured frame patterns called Presets are provided.

Preset1, Preset2, Preset3 and Preset4 can be loaded by clicking on the corresponding preset button.

Figure 15. STSW

-LLL002GUI frame programming mode Preset1

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GUI mode

Figure 16. STSW

-LLL002GUI frame programming mode Preset2

Figure 17. STSW

-LLL002GUI frame programming mode Preset3

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Page 14

UM2381

GUI mode

Figure 18. STSW

-LLL002GUI frame programming mode Preset4

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Page 15

STM8_UART_RX

DD2211

VDC

CC2244

LD03

LLEEDD

DD1144

LLEEDD

GND

CC77

22..22KK

LLEEDD

SDA

CS3

DD1111

RR99

JJ77

VDDD

CC44

SCL

DD3344

OTP1/2 CS

CC88

CCOONN22

PC4

FSW

22..22

SWIM

µF

OPEN_4_1

VOUT

4477KK

OTP1/2

CCNN 11

VCAP

VDD

LLEEDD

OPEN_3_2

OUT 8

RR77

LLEEDD

11KK

110000nnFF

FF11

OUT 8

4 3 2 1

RR2266 00EE

OUT10

LLEEDD

DD2255

CC3388

110000nnFF

CC1133

DD2288

OUT 7

RReesseett

PD2

UU22

110000nnFF

668800EE

110000nnFF

1100KK

LLEEDD

OUT 1

REXT

GND

SCL

AALLEEDD11226622ZZTT

00EE

VDDD

LLEEDD

110000nnFF

VDDD

OPEN_2_1

LLEEDD

DD3311

VDDA

SCL

SS22

VRAIL

RR3344 00EE

LED DRIVER ALED1262ZT

DC-DC Power Supply

Jumpers to Simulate Open Circuit Error Detection

Microcontroller

CC3355

OTP1/2 CS

SSWWIIMM__CCoonn nneeccttoorr

LLEEDD

OUT 7

LLEEDD

RR3333 00EE

CCOONN22

DD3333

OUT 5

NRST

110000nnFF

DD11

VDDA

1100KK

VDDA

UU88

1100KK

DD99

RR3355 00EE

UART_RX

VDDD

00EERR2222

SCL

CC2299 CC3300

J1: VDDA ENABLE/ DISABLE

J10 : UART Br i dge

Suppo r t i ng

OUT 0

OPEN_1_2

OTP1/2

OUT10

OUT11

OUT 4

LLEEDD

RR4477

OUT 6

JJ44

CC11

REXT

GND

Mounting Holes

USB-UART BRIDGE Level Shifting

RR3322

CC3344

RR3300

VOUT

DF01S

1100uuFF

VDC

22..22

11..22nnFF

AALLEEDD11226622ZZTT

LLEEDD

SCL

OUT 3

LLEEDD

22AA

CC99

SWIM

SSTTPPSS33LL4400--YY

DD1100

LLEEDD

RR4444

CC5500

RR55

VOUT1VIN

LLEEDD

OUT 3

JJ88

SSWW__TT__SSPPDDTT

PC6

SDA

µF

RR1111

µF11

To program register during production

2222

110000nnFF

DD5500

SDA

1 2 3 4

LLEEDD

RR3311

66..22KK

LLEEDD

CS3

CC2288

RR4433

LLEEDD

FLAG

CC4477

DD2233

LLEEDD

VDDA

VDD

FLG

CC2277 CC3333

1188

PD1

OUT 0

110000nnFF

CC1166 1100uuFF

RR5533

110000nnFF

RR1122

LLEEDD

VRAIL

00EERR2233

CC1199

110000KK

µF

VVDDDD

OTP1/2-Setting-Read

DD4477

44..77KK

LL11

DD22

CC3366

110000nnFF

UU44

22..22

OPEN_4_2

1100uuFF

VDDA

VIN

RR4411

DD88

PB2

4477KK

OUT 9

DD1133

FLG

VDDA

CCOONN22

OUT 9

DD2266

110000nnFF

00EE

RR3377

OUT 9

Connec t or

SOT- 8 9

SW2: Stand Alone Mode Output Configuration Hight Level Logic 2-1 - SAM_conf_2 register Low Level Logic 2-3 - SAM_conf_1 register

+3.3V

OUT 8

DD2299

µF

VDDA

VSSA

PD4

DD1122

STM8_UART_TX

VDD

NRST

RR66

CCOONNNN:: DDCC JJAACCKK

PD7

CCOONN22

66..22KK

RR5500

SDA

LLEEDD

VDC

AALLEEDD11226622ZZTT

DD4466

RR1155

JJ55

DD4488

00EE

RR4422

VRAIL

DD1188

OUT 8

VRAIL

PC7

RR22

LLEEDD

MMHH22

CC5522

VDD

CC33

110000nnFF

OUT11

DD3377

VDD

µF

VDDA

SS11

PC1

PPOOTT__1100KK

DD33

CC4444

1100uuFF

LLEEDD

SDA

BBRRIIDDGGEE

OPEN_1_1

OTP1/2

OUT 5

110000nnFF

FLAG

11..22KK

DD77

UUAARRTT__CCOONNNN EECCTT OORR

CC4455

RR44

44..77KK

CC4422

OUT 5

5 4 3 2 1

LD03

UU11

AALLEEDD11226622ZZTT

SCL

CC3399

QQ11

LLEEDD

RR4466

PA2

DD3355

VDDA

00EERR2277

CC2222

PE5

44..77KK

QQ22

CC3322

SSWW22

OPEN_1_2

4477KK

LLEEDD

OTP1/2 CS

OUT11

LLEEDD

SYNC

JJ33

CC1188

SCL

J4: VDDD ENABLE/DI SABLE

J2: Chip Select

SSWW11

OUT 4

OPEN_3_2

FLAG

DD3300

µF

VDDD

PB0

RR5522

FLG

CC1144

44..77KK

OUT 3

OTP1/2

UU55

CS1

VDDD

OPEN_3_1

CC4466

DD3322

LLEEDD

RR4455

GPWM PG

66..22KK

OUT 5

VDD

PD3

PC5

DD2200

RR4499

LL7788LL3333AABBUUTTRR

VVDDDD

DD4422

SCL

BBSSSS112233

OPEN_2_2

FLAG

RR2299

LLEEDD

RR33

+3.3V

RR1166

4477KK

CCOONN55

GPWM PG

LLEEDD

OPEN_2_2

// 3355VV

µF

4477

OPEN_3_1

RR5555

PB3

FLAG

OUT10

110000nnFF

OUT 6

CCOONN55

110000KK

110000

RR2288 00EE

LLEEDD

CC2266

4477KK

DD4433

USB-UART BRIDGE Connectors USB-UART BRIDGE Supply

OUT 1

COMP7GND

DD1155

DD4455

FLAG

CS1

PA1

2 1

VDDA

VDD

STM8_UART_TX

SSTTMM88AAFF66226666

CC4499

DD44

CC3311

VRAIL

RR2200 11KK

CC1177

RR4488

FLAG

222200KK

CCOONN22

12V, 1. 5A

CS of ALED1262ZT

PB5

PD0

OUT 1

OTP 1/2 Setting

110000

66..22KK

222200nnFF//5500vv

CC1100

110000nnFF

CC5511

DD2244

DD1199

DD3399

LLEEDD

110000nnFF

3333nnFF

UU33

JJ66

µF

GND

CS4

1100uuFF

SSMM44TT3300CCAAYY

JJ1100

SDA

LLEEDD

RR11

VDDA

REXT

PD5

UART_TX

GND

RR3399 00EE

110000nnFF

22..22

LLEEDD

REXT

GND

RR1133

µF

CS4

µF

CCOONN22

UU66

DD3388

OUT 2

RR1199 11KK

OUT 4

RR1177

MMHH33

OUT 322VDDA

BBSSSS112233

AA77998866AA

PPOOTT__1100KK

PC2

JJ22

RR2211 00EE

NRST

UART_RX

CC66

LLEEDD

OUT 9

GND

PF4

VSS

VDDIO

LD03

110000nnFF

VDD

110000KK

11KK

RR5511

DD2222

CC4488

JJ99

CC55

VDDA

CC2200

DD55

110000nnFF

µF

DD4400

12 13

OUT 6

110000nnFF

µF

OTP1/2

11..88KK

Gl obal PWM f or Br i ght nes s Cont r ol

CC1122

DD66

UU77

OUT 0

2277EE

GPWM PG

CC3377

RR5544

CC2211

JJ11

CS2

LLEEDD

STM8_UART_RX

CC4400

OUT 1

RR4400

RR3388

FLAG

OUT 2

CC5533

110000EE

VDD

SDA

MMHH11

CC1111

PB1

µF

LLEEDD

PC3

OUT 6

GPWM

1100KK

DD4499

110000KK

RR88

DD5511

µF

333300nnFF

44..77KK

110000

UART_TX

MMHH44

4477KK

VDD

FLG

OPEN_4_1

LLEEDD

44..77KK

µF

VDDD

OPEN_2_1

LLEEDD

DD4444

FLAG

CC22

OUT 7

12 13

VDDD

SDA

FLAG

OUT11

OPEN_1_1

CC2233

VDDD

SDA

OUT 7

µF

00EERR2255

RR1100

RR3366 00EE

DD1177

110000nnFF

VCC

PD6

OUT 2

OUT 0

LLEEDD

OPEN_4_2

VDDA

DD3366

1100KK

RR1144

LD03

LLMM22993311AADDTT 5500RRYY

LLEEDD

110000nnFF

PB4

00EERR2244

GPWM PG

DDNN MM

OTP1/2-Setting-Read

GPWM

11uuFF

12345

I / P

// 3355VVµF

OUT10

OUT 2

CC4411

OTP1/2 CS

CC1155

DD4411

DD2277

DD1166

110000nnFF

CC2255

LLEEDD

CC4433

LLEEDD

RR1188

CS2

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4 Schematic diagrams

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Figure 19. STEV

AL-LLL002M1 circuit schematic

Schematic diagrams

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Page 16

BOOT0

VSSA

PB3

PA8

UART_TX_USB

GND

R14 22

CON4

C17

4.7nF

PB6

USBDP_PA12

PA4

CON4

I/O2

VSS_3

C21 100nF

PA1

VDD_1

ESDAULC6-3BP6

USB_DP

SHELL

PA3

OSC_IN_USB

VDD

R16 1M

C22

4.7nF

VDD

GND

SHELL

SWDIO

C23 15pF

C1 20pF

C18 15pF

CONNECTOR

VDDA

GND

NRST_USB

USB_DP

C23 15pF

R16 1M

BOOT1

STM32F103T8U6

GND

USBDM_PA11

PA14

C9 100nF

R14 22

SHELL

SW1

SW_PB_SPST

GND

VDD_3

PB0

I/O3

C21 100nF

PA12

NRST_USB

VDD

PA7

USB_PU_PB3

C19 100nF

OSC_IN_USB

PA11

CN1

USB_DM

C22

4.7nF

PA15

USB_UART_Connector

PA10

C1 20pF

PB2

PA13

USBDM

C2 20pF R84.7K

OSC_OUT_USB

SWD Connector

VDD

SWCLK

CN1

SWCLK

PB4

VSS_1

C13 100nF

PB1

OSC_OUT_USB

PA0-WKUP

USB_UART_Connector

USBDP

PA6

USB_VCC

NRST

C13 100nF

USB_DM

R1 1M

SW1

SW_PB_SPST

SWDIO

SWD Connector

UART_RX_USB

R17

1.5k

C19 100nF

C18 15pF

OSC_IN/PD0

GND

C9 100nF

GND

UART_RX_USB

C20 100nF

STM32 section

I/O1

USB_GND

OSC_OUT/PD1

VSS_2

USBDP_PA12

BOOT1

VDD

R1 1M

PB5

OSC_OUT_USB

USB_PU_PB3

C17

4.7nF

ESDAULC6-3BP6

VDD

PA5

BOOT0

PA2

VDD

USB section

R84.7K

C2 20pF

R10

PB7

VDD_2

R17

1.5k

C20 100nF

SHELL

BOOT0

OSC_IN_USB

UART_TX_USB

STM32F103T8U6

GND

USBDM_PA11

PA9

UM2381 - Rev 1

Figure 20. STEV

AL-LLL002D1 circuit schematic

page 16/29

Schematic diagrams

UM2381

Page 17

5 Bill of materials

UM2381

Bill of materials

Table 3. STEV

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

1 1 U1

2 1 U2

3 1 U3

4 4 U4, U5, U6, U7

5 1 U8

6 1 D1

7 1 D2

8 1 R10

9 5

10 5

11 6

12 4 R6, R19, R20, R51

13 1 R7

14 1 R8

15 1 R9

16 1 R11

17 1 R12

18 2 R15, R16

19 16

R1, R17, R18,

R49, R50

R2, R3, R13, R14,

R55

R4, R5, R41, R43,

R44, R47

R21, R22, R23, R24, R25, R26, R27, R28, R33, R34, R35, R36, R37, R39, R40,

R42

A7986A 38 V/3 A

STM8AF6266

LM2931ADT50R 5

L78L33ABUTR 3.3

V/100 mA SOT

STPS3L30-Y 30 V

SM4T30CAY 400

4.7 K 1/8 W ±1%

4.7 K 1/8 W ±5%

10 K 1/8 W ±5%

47 K 1/8 W ±5%

1 K 1/8 W ±5%

27 E 1/8 W ±5%

2.2 K 1/8 W ±5%

680 E 1/8 W ±5%

220 K 1/8 W ±5%

1.2 K 1/8 W ±1%

10 K 20 V ±30%

Through Hole

AL-LLL002V1M bill of materials

3 A step-down

switching

HSOP8

LQFP32

V DP

ALED1262W

TSSOP24

SMC

W SMA

SMD-0805

0 E ±10%

SMD-0805

-89

regulatorfor

automotive

applications

Automotive 8-bit

MCU

Very low drop

voltage regulators

with inhibit function

Automotive-grade

12-channel LED

driver

0.1 A positive

voltage regulators

Automotive power

Schottky rectifier

Automotive 400 W

TVS in SMA

Thick film resistors ANY ANY

Potentiometer Alps RK09K1130AP5

Thick film resistors ANY ANY

ST A7986A

ST STM8AF6266TDY

ST LM2931ADT50RY

ST ALED1262ZTTR

ST L78L33ABUTR

ST STPS3L40SY

ST SM4T30CAY

UM2381 - Rev 1

page 17/29

Page 18

Bill of materials

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

20 4

21 4

22 1 R52 SMD-0805

23 1 R53

24 1 R54

25 23

26 5

27 4

28 1 C53

29 2 C3, C22

30 1 C4

31 1 C7

32 1 C10

33 1 C11

34 1 C12

35 12

36 1 C51

37 1 D3 200 V/2 A SMD Bridge rectifier

R29, R30, R31,

R32

R38, R45, R46,

R48

C1, C5, C9, C14,

C15, C17, C18, C19, C20, C21, C23, C29, C31, C33, C35, C37, C39, C41, C47, C48, C49, C50,

C52

C2, C6, C8, C13,

C16

C25, C26, C27,

C28

C24, C30, C32, C34, C36, C38, C40, C42, C43, C44, C45, C46

6.2 K 1/8 W ±1% SMD-0805

100 K 1/8W ±10%

SMD-0805

1.8 K 1/8 W ±5% SMD-0805

100 E 1/8 W ±5%

SMD-0805

100 nF 25 V ±10%

SMD-0805

10 µF 25 V ±10%

SMD-0805

2.2 µF 6.3 V ±10% SMD-1206

100 µF 16 V ±10%

SMD-1206

100 µF 6.3 V

±10% SMD-1206

33 nF 25 V ±10%

SMD-0805

1.2 nF 25 V ±10% SMD-0805

47 µF 35 V ±10%

SMD-1206

22 µF 35 V ±10%

SMD-1206

220 nF 50 V ±10%

SMD-0805

1 µF ±10% SMD-0805

330 nF ±10%

SMD-0805

Thick film resistors ANY ANY

Thick film resistors

(not mounted)

Thick film resistors ANY ANY

Ceramic

capacitors

Ceramic

capacitors

Ceramic

capacitors

Ceramic

capacitors

Ceramic

capacitors

Ceramic

capacitors

Ceramic

capacitors

Ceramic

capacitors

Ceramic

capacitors

Ceramic

capacitors

Ceramic

capacitors

Ceramic

capacitors

ANY ANY

Comchip

echnology

DF201ST-G

UM2381

UM2381 - Rev 1

page 18/29

Page 19

Bill of materials

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

D4, D5, D6, D7,

D8, D9, D10, D1

D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23, D24, D25, D26,

38 48

39 1 F1

40 1 L1

41 2 Q1,Q2

42 6

43 1 J2

44 1 J10

45 1 J3 SWIM_Connector Connector ERNI 284697

46 1 J9

47 1 SW1

48 1 SW2

49 2 S1,S2

50 1 CN1

D27, D28, D29, D30, D31, D32, D33, D34, D35, D36, D37, D38, D39, D40, D41, D42, D43, D44, D45, D46, D47, D48, D49, D50,

D51

J1, J4, J5, J6, J7,J8CON2 2X1 through

LED 2.1 V/140 mA

PLCC-6

2 A 60 V through

hole

18 µH 4.2 A 0.2

SMD/SMT

N Channel

MOSFET 100 V

SOT

hole

CON5 5X1 through

hole

CON5 5X1 through

hole

CON4 4X1 through

hole

SW reset 12 V/ 50

mA SMD

Switch KEY-SPDT

30 V/ 100 mA

through hole

PUSHBUTTON

SMD

DC Jack 24VDC / 5A Through Hole

-23

High Power red

LED

Fuse Littelfuse Inc. RKEF160

Fixed inductors

N channel logic

level MOSFET

2.54 mm pitch

berg stick male

2.54 mm pitch

berg stick male

2.54 mm pitch

berg stick male

2.54 mm pitch

berg stick female

Reset switch/

SPST

SPDT EAO 09.03201.02

SPST-NO TE Connectivity FSM4JSMATR

Input power jack CUI Inc PJ-102AH

Osram Opto

Semiconductor

Wurth

Electronics

Fairchild

Semiconductor

ANY ANY

Multicomp DTSM-32S-B

LR G6SP-CBEA-1-1-Z

744770118

BSS123

UM2381

Table 4. STEV

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

1 1 U3

2 1 U4

3 1 SW1 SPST 12 V SMD Switch Multicomp DTSM-32S-B

4 1 CN1 SMD USB-B type Samtec Inc MUSB-05-S-B-SM-A

UM2381 - Rev 1

ESDAULC6-3BP6

STM32F103T8U6

AL-LLL002V1M bill of materials

ESD protection for

SOT666

VFQFPN 36

6x6x1-0

high speed

interface

Mainstream

performance line,

ARM Cortex-M3

MCU

ST ESDAULC6-3BP6

ST STM32F103T8U6

page 19/29

Page 20

UM2381

Bill of materials

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

5 1 J3

6 1 J5 16 MHz 4-SMD Crystal ABRACON ABM10-16.000MHZ-E20-T

7 1 J6

8 2 R1, R16

9 1 R8

10 2 R10, R14

11 1 R17

12 2 C1, C2

13 5

14 2 C17, C22

15 2 C18, C23

C9, C13, C19,

C20, C21

Connector, male

5x1 through hole

Connector, male

4x1 through hole

1 M 1/16 W ±1%

SMD0402

4.7 K 1/16 W ±1%

SMD0402

22 E 1/16 W ±1%

SMD0402

1.5 k 1/16 W ±1% SMD0402

20 pF 50 V

SMD0402

100 nF 50 V

SMD0402

4.7 nF 50 V SMD0402

15 pF 50 V

SMD0402

2.54 mm pitch

berg stick male

2.54 mm pitch

berg stick male

Thin Film ANY ANY

Ceramic ANY ANY

ANY ANY

UM2381 - Rev 1

page 20/29

Page 21

6 Layout

UM2381

Layout

Figure 21. STEV

Figure 22. STEV

AL-LLL002V1M layout: top layer

AL-LLL002V1M layout: bottom layer

UM2381 - Rev 1

page 21/29

Page 22

7 Thermal behavior

The ALED1262ZT is available in a TSSOP24-EP package (mounted on the evaluation board) with 37.5 °C/W thermal resistance.

The average forward voltage drop of red channels is 2 V and the maximum channel current is configured for 42.5 mA.

The STEV

AL-LLL002V1 evaluation kit thermal image at the ≅45 mA current in all the channels are shown below.

Figure 23. STEVAL-LLL002V1 thermal layout at 12 V DC input (top side)

UM2381

Thermal behavior

UM2381 - Rev 1

page 22/29

Page 23

UM2381

Thermal behavior

Figure 24. STEV

AL-LLL002V1 thermal layout at 12 V DC input (bottom side)

Figure 25. STEV

AL-LLL002V1 thermal layout at 20 V DC input (top side)

UM2381 - Rev 1

page 23/29

Page 24

UM2381

Thermal behavior

Figure 26. STEV

AL-LLL002V1 thermal layout at 20 V DC input (bottom side)

UM2381 - Rev 1

page 24/29

Page 25

Revision history

able 5. Document revision history

Date Version Changes

03-Jun-2019 1 Initial release.

UM2381

UM2381 - Rev 1

page 25/29

Page 26

UM2381

Contents

1 Hardware description ..............................................................2

1.1 STEV

AL-LLL002M1 main board ..................................................2

1.1.1 Chip select (CS) one time programming (OTP) ..................................2

1.2 STEVAL-LLL002D1 USB-UART bridge ............................................3

1.3 Evaluation kit block diagram .....................................................3

1.4 STEVAL-LLL002V1 key devices ..................................................4

2 STEVAL-LLL002V1 connections....................................................5

2.1 Power supply ..................................................................5

2.2 Microcontroller SWIM ...........................................................5

2.3 Jumpers for LED open-circuit simulation ...........................................5

2.4 USB-UART bridge..............................................................5

3 Operation modes ..................................................................6

3.1 Bus driven mode ...............................................................6

3.1.1 Features ...............................................................6

3.1.2 Normal mode ...........................................................6

3.1.3 Error detection ..........................................................7

3.2 Standalone mode (SAM) ........................................................7

3.2.1 Features ...............................................................8

3.3 GUI mode.....................................................................8

3.3.1 Features ...............................................................8

3.3.2 GUI setup ..............................................................9

3.3.3 Modes ................................................................10

4 Schematic diagrams ..............................................................15

5 Bill of materials...................................................................17

6 Layout............................................................................21

7 Thermal behavior .................................................................22

Revision history .......................................................................25

UM2381 - Rev 1

page 26/29

Page 27

UM2381

List of tables

able 1. STEVAL-LLL002M1 evaluation board: ALED1262ZT addresses....................................2

Table 2. STEVAL-LLL002V1 error detection mode ...................................................7

Table 3. STEVAL-LLL002V1M bill of materials ..................................................... 17

Table 4. STEVAL-LLL002V1M bill of materials ..................................................... 19

Table 5. Document revision history............................................................. 25

UM2381 - Rev 1

page 27/29

Page 28

List of figures

UM2381

List of figures

Figure 1. STEV

Figure 2. STEVAL-LLL002V1M main board (top side) ................................................2

Figure 3. STEVAL-LLL002V1M main board (bottom side) .............................................2

Figure 4. STEVAL-LLL002V1D (top side).........................................................3

Figure 5. STEVAL-LLL002V1D (bottom side) ......................................................3

Figure 6. STEVAL-LLL002V1 block diagram ...................................................... 4

Figure 7. STEVAL-LLL002V1 evaluation kit: error detection mode (J6 and J7 removed).........................7

Figure 8. STEVAL-LLL002V1 evaluation kit: standalone mode (configuration 1) .............................. 8

Figure 9. STEVAL-LLL002V1 evaluation kit: standalone mode (configuration 2) .............................. 8

Figure 10. STEVAL-LLL002V1 evaluation kit: GUI initial screen .......................................... 9

Figure 11. STSW-LLL002GUI basic mode ........................................................ 10

Figure 12. ALED1262ZT configuration register ..................................................... 11

Figure 13. STSW-LLL002GUI advanced mode..................................................... 11

Figure 14. STSW-LLL002GUI frame programming mode.............................................. 12

Figure 15. STSW-LLL002GUI frame programming mode Preset1 ........................................ 12

Figure 16. STSW-LLL002GUI frame programming mode Preset2 ........................................ 13

Figure 17. STSW-LLL002GUI frame programming mode Preset3 ........................................ 13

Figure 18. STSW-LLL002GUI frame programming mode Preset4 ........................................ 14

Figure 19. STEVAL-LLL002M1 circuit schematic ................................................... 15

Figure 20. STEVAL-LLL002D1 circuit schematic....................................................16

Figure 21. STEVAL-LLL002V1M layout: top layer ...................................................21

Figure 22. STEVAL-LLL002V1M layout: bottom layer ................................................ 21

Figure 23. STEVAL-LLL002V1 thermal layout at 12 V DC input (top side) .................................. 22

Figure 24. STEVAL-LLL002V1 thermal layout at 12 V DC input (bottom side)................................ 23

Figure 25. STEVAL-LLL002V1 thermal layout at 20 V DC input (top side) .................................. 23

Figure 26. STEVAL-LLL002V1 thermal layout at 20 V DC input (bottom side)................................ 24

AL-LLL002V1 evaluation kit ....................................................... 1

UM2381 - Rev 1

page 28/29

Page 29

UM2381

IMPORTANT NOTICE – PLEASE READ CAREFULLY

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

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

s terms and conditions of sale in place at the time of order acknowledgement.

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UM2381 - Rev 1

page 29/29