2 KB Flash — sizing the firmware budget
The MSP430G2232IRSA16T: The 2 KB Flash (2K x 8) limits firmware size to a few hundred instructions.
On-chip peripherals — ADC, serial, and PWM in one package
The MSP430G2232 packs a 10-bit ADC with 8 multiplexed channels, a USI module that supports I²C and SPI, and a PWM timer. The 10 I/O lines are enough for a few sensor inputs and a serial bus.
TI lists the MSP430G2232IRSA16T as Active. The ROHS3 compliance covers current environmental requirements.
16-QFN rework — what the bench sees
The 16-QFN with exposed pad (4x4 mm) is a hand-reworkable package if you have a hot-air station and a fine tip.
As an active TI MSP430, this MCU is available through multiple distribution channels. The part is also available in Cut Tape (CT) for prototype quantities, and Tape & Reel (TR) for production runs.