Baud rate

[000harsha]

In a spectroscopy application I am sampling the incoming values at 300kHz with a 12-bit ADC so i will be having a bit rate of 3.6Mbps do i need to have the same baud rate. I am doing it using stm32f401re

[Peter BENSCH]

You already asked something similar here.

But let's do the maths: assuming you use the full 12bit from the 12bit ADC (you can also sample with 8bit or 10bit) at 300kHz, then this results in net 4.8Mbps. However, this does not take into account any delay, e.g. due to the handshake during serial transmission or storage/processing on the remote side. Furthermore, assuming that your ADC data is delivered permanently, i.e. without interruption, you would therefore have to transmit at a significantly higher data rate so that no data is lost.

However, it is not yet possible to say more precisely because only you know the temporal behaviour of your overall system.

Regards
/Peter

[000harsha]

Can we achieve such higher baud rate of 4.8Mbps in stm32f401re

[AScha.3]

See ds F401 :

For 12b ADC set SPI to 16b data (half-word, if using DMA.).