stm32F746 Custom board, capacitive to resistive touch LCD

FJB2069 · ‎2025-05-06

I got my custom stm32F746 PCB Working! It is based on the STM32F746G-DISCO. So, for the first revision I used the same capacitive touch lcd used on the Disco. So that all works! But I need a resistive lcd, so I designed in a TSC2046IPWR controller. I just want to connect a resistive panel and get it to function.

Not really sure best way to proceed to disable the capacitive control and add the resistive?

Any insight would be appreciated.

mƎALLEm · ‎2025-10-15

Hello,

Not sure how you will do that mechanically. Is it another LCD having TSC2046IPWR controller integrated or you need to use the same LCD on the board and replace the touch screen film and replace it with another..

From electrical and programming stand point, the controller is using a serial interface mostly a SPI interface:

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mƎALLEm · ‎2025-10-15

Hello,

Not sure how you will do that mechanically. Is it another LCD having TSC2046IPWR controller integrated or you need to use the same LCD on the board and replace the touch screen film and replace it with another..

From electrical and programming stand point, the controller is using a serial interface mostly a SPI interface:

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.