We have been experiencing dropped bytes during UART communications and have determined the root cause to be an unstable external oscillator. The external oscillator placement does not follow the recommended guidelines and is resulting in the PLL desy...

We have run into a problem where a new run of boards with STM32F429ZIT MCU's have been losing a byte (always loses a single byte which seems odd) from the UART communications that are sent to DMA.We send packets of UART data to the MCU and the data i...