Timer and SPI clock synchronization on STM32F407

[Yves_P]

Dear All,

I would like to interface an ADC (ADS131M08) with a STM32F407. The ADC datasheet mentions that for better performance, the ADC clock should be synchronized with the SPI clock. Is there any way to achieve such synchronization with the STM? I was thinking about a timer that can give the clock to the ADC and get this timer sync with the SPI, but I don't really see if it's possible and how to implement it.

Thanks for your help

Best regards

[Sarra.S]

Hello @Yves_P, 

You can use one of the timers to generate the ADC clock signal; configure the timer to generate a PWM signal at the desired ADC clock frequency. Then, set the SPI peripheral to operate at a frequency that is a multiple or sub-multiple of the ADC clock frequency