Lemontree

STM32h750 development board (super simple version, just to use a screen)

 
Overview

As we all know, the h750 series has strong graphics control capabilities, such as LTDC interface, DMA2D, etc., but I personally feel that for the vbt6 of LQFP-100, these interfaces can be used, but they cannot expand sdram, and psram can be expanded, but the pin It is reused with LTDC pins. If you use LTDC to drive a standard 40PRGB screen, because the internal RAM address is not unified, the maximum driving capacity is 480*272 of RGB565, so this rookie still draws an fmc-lcd interface (the screen interface is compatible with punctual Atomic's 8080 parallel screen interface is not a recommendation for this screen, but it is simply left unused in the hand. It is outrageous to complain about the driver IC of this screen)

 

 

 

Pmos was used to prevent reverse connection, a Zener diode was used to prevent overvoltage, and magnetic beads were used to simulate AVDD.

The USB interface uses typeC for OTG design. The H7 series does not require a 1.5K pull-up resistor, so the 1.5K pull-up here does not need to be soldered. For details, please refer to ST's official "USB Design and PCB Layout" (included in the attachment)

参考设计图片
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Update:2025-07-04 00:40:14

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