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SPI Slave Configuration Clock

Question asked by satour.abou on Sep 21, 2015
Latest reply on Sep 21, 2015 by Clive One

I use a stm32f103, I want to use the SPI peripheral in slave mode.
The SPI Master is configured with a clock at 1Mhz.
I must to configure the STM32 SPI peripheral with a clock at 1Mhz, but its not possible with these prescalers availables, I can have 1.5Mhz or 0.75MKhz.
Which clock I must choose ? the upper or the lower ?

Thanks :)