24-bit sigma-delta ADC — the reason this part exists
MSP430AFE231IPWR integrates a single 24-bit sigma-delta ADC.
Peripherals and I/O
On-chip peripherals include brown-out detection and reset, a PWM timer, and a watchdog timer. Connectivity is limited to SPI and UART/USART — there is no I2C peripheral on this part, so designs needing I2C must bit-bang it on GPIO or choose a different MSP430 variant. The 11 general-purpose I/O pins are enough for a simple sensor interface with a few control lines.