SPRUJ67A October   2022  – October 2023

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Revisions and Applicable EVM
  5. 2System Description
    1. 2.1 Functional Block Diagram
    2. 2.2 Power Block Diagram
    3. 2.3 LCD and EVM Connectivity
    4. 2.4 EMC, EMI and ESD Compliance
  6. 3Revision History

2.2 Power Block Diagram

The LCD is powered through external 12 V power adapter. There is a 3.3V buck converter on the adapter board to source the MCU, EEPROM, LCD module and touch screen.

The backlight driver on the adapter board provides the required voltage and current to the LCD backlight. The MCU controls the enable and brightness of the LCD.

GUID-20230628-SS0I-ZZSJ-TD8K-VLWDDMMHKVVX-low.png Figure 2-4 Power Block Diagram