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I am Looking for Low power MCU in LQPF64 Package. I found too many MCU , those could be compatible with my MCU , I have problem with parts number .What is the meaning by R in (STM32F334 "R" 8 T7) ?There is also same part available with C,K and T and ...
its just have a predefined function eMBErrorCode eMBInit (  eMBMode  eMode, UCHAR  ucSlaveAddress, UCHAR  ucPort, LONG  ulBaudRate, eMBParity  eParity )  how it will take my USART3 to communicate as modbus ?