Problem of the output data rate of SDADC1 at STM32F373 MCU

[renchin shr]

Posted on January 15, 2018 at 03:14

Greetings everyone,

I have a problem about the output data rate of SDADC1 at STM32F373 MCU.

I use the STM32CubeMX to configure the SDADC1 with single channel, and generate code for Keil uVision 5, I notice that the data output rate is 16.6 kHz under 6 MHz sampling rate,but according to  the specification,  the data output rate should be 6 MHz/120 = 50 kHz.

If I change to use SDADC2 channel with the same setting, the data output rate can reach 50 kHz correctly, so I think there may be a bug with the HAL driver, did anyone encounter the same problem?

My software version:

STM32CubeMx Version 4.23.0

Keil uVision 5.17.0.0

#stm32f373-sdadc