Can I use PA4/PA5 for SPI1 while I also use DAC module? What I found is that the SCK an NSS do not function as soon as I enable the DAC channel 1 and channel 2, even I configure the channels as "connected to on chip peripherals with buffer disabled"

[waclawek.jan]

Which STM32 in particular?

Reminds me of https://community.st.com/s/question/0D50X0000BcSbYeSQK/errata-stm32g-dac-use-precludes-use-of-associated-gpio-pin-even-when-dac-output-disabled

Is there anything related mentioned in the errata?

JW

[FLiu.11]

Thanks.

It is a STM32H743IIT6. ( - VQ911426 AA157 - TWN AK 936 - V e3)

Looks like the silicon is Revision V, manufactured in 36s week of 2019.

The latest RM0433 still says the pins can be used as GPIO if the DAC is configured to connect to internal parts only.

Frank

[waclawek.jan · Accepted solution]

JW

[FLiu.11]

Thanks