I'm using SPI Protocol in two STM32F407ZGT6 , one master and one slaveBoard has 3.3v LDO regulator and Input Voltage has 5vWhen power supply connected SPI program correctly work but in this case when disconnect SPI wires and connect again we face of ...

Hi,I'm using two STM32F407 LQFP-144 in SPI communication , one Master and one slavewhen power supply is connected and program is running and spi send & recieve is okay , we disconnect board ( wiring) and then connect again , face off over heating ic ...