SPI2 Frequency of the STM32F469BIT7

[deeksha23jan]

EMB1428QSQ/NOPB is used which has the frequency of the 1.1MHz fclk and the SPI2 of STM32F469BIT7 is going as a clock to it. I need the minimum value of the SPI2 master that can be fed to the EMB1428QSQ/NOPB. Also, where can I find the minimum frequency of the communication interfaces , I have used the USART and SPI2.

[SofLit · Accepted solution]

Hello,

Why are you looking for the minimum freq value?

Only maximum values are provided in the datasheet:

And you can go downto 1MHz for SPI

[Andrew Neil]

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@deeksha23jan wrote:

EMB1428QSQ/NOPB .

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You mean this: https://www.ti.com/product/EMB1428Q/part-details/EMB1428QSQ/NOPB ?

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@deeksha23jan wrote:

I need the minimum value of the SPI2 master that can be fed to the EMB1428QSQ/NOPB.

Also, where can I find the minimum frequency of the communication interfaces 

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The minimum required by the EMB1428QSQ will be specified in the EMB1428QSQ datasheet;

The minimum that can be provided from the STM32 will be specified in the STM32 datasheet and/or Reference Manual:

https://www.st.com/en/microcontrollers-microprocessors/stm32f469bi.html#documentation