Pointers on Designing TFT Based System for STM32H750XB

[Caan]

Hello All,

               I need to design a board that will carry an IS42S32400F-6BL SRAM ,STM32H750XB MCU,Flash MT25QL512ABB1EW9-0SIT and Couple of support components along with Power supply.

My questions-

1) MCU Power Supply Protection

2) High frequency filter placements (ferrite beads)

3)SPI /I2C Pin protection

4) Analog and Digital Layers placement

5) Optimal PCB Layer to be used

6)PCB Stack  consideration

[STTwo-32]

Hello @Caan 

For some design tips on how to set your design using the STM32H750xB value line, you may want to start by refering to the Getting started with STM32H74xI/G and STM32H75xI/G MCU hardware development application note (AN4938). Also, you can refer to the design of the STM32H750B-DK since this board is based on the same MCU you will be using.

For a dedicated HW support, you may want to contact an HW expert to review your design and give you more advices dedicated for your case.

Best Regards.

STTwo-32 

[Caan]

Hey @STTwo-32,

                           Thanks for the support, But I am little bit confused on the series resistance that are placed between the SDRAM and MCU, In some places people are interfacing the STM32H750 without the series resistance as shown here.

[mƎALLEm]

Hello @Caan ,

There are no resistors between SDRAM data lines and the MCU. Only unused data lines are pulled low via pull down resistors:

This is because the SDRAM is used only in 16bit data width so the rest of the data lines D16 to D31 are unused.