16-bit MSP430 at 25 MHz — what the core and memory mean for the BOM
The MSP430F5304IPTR provides 31 I/O lines and an 8-channel 10-bit ADC.
On the communication side, the MSP430F5304IPTR supports I²C, SPI, UART/USART, LIN, and IrDA — enough for a LIN node in an automotive body controller or a sensor hub talking to a host over UART. The internal oscillator (no external crystal needed for basic operation) saves two pins and a BOM line, though the internal RC's accuracy may not hold a precision RTC without calibration.