SPI max frequency test

[Pkats.1]

Hey,

I would like to use an ADC LTC2315,

in maximum SPI interface (87.5Mhz Fclk).

Does anyone tried to work with the STM32H743 In SPI At this Frequency, or more?

From DS, in master mode Channel 1 can work in Max of 133MHz, hope it really does.

Moreover, can I work with 16 bit registers in SPI interface? I would like to run an algorithm on the Sampled data, hope I could work with 16 bit variable for better performance.

[TDK]

> Does anyone tried to work with the STM32H743 In SPI At this Frequency, or more?

Yes

> Moreover, can I work with 16 bit registers in SPI interface?

The frame size for SPI is configurable on the STM32H7 and includes 16 bit frames. The SPI section of the reference manual should shed some light.

It sounds like you want to do high speed data acquisition. This might require you to write your own code to keep up with the amount of data being processed. This will depend on your exact application, of course.