Introduction
The
evaluation kit consists of the STEVAL-LLL002M1 main board and the STEVAL-LLL002D1 USB-UART
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
12-channel LED driver controlled through the
microcontroller I²C
interface.
A 48 red LED matrix is driven by four ALED1262ZT LED drivers.
The on-board
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.
Figure 1.
STEVAL-LLL002V1 evaluation kit
Getting started with the evaluation kit for automotive rear lights with pattern
animations based on ALED1262ZT and STM8AF6266
UM2381
User manual
UM2381
-
Rev 1
-
June 2019
For further information contact your local STMicroelectronics sales office.
www.st.com
