Three 24-bit sigma-delta ADCs — the analog front-end that defines this part
The MSP430AFE223IPWR: The 12 MHz MSP430 CPU16 core has enough headroom to run the digital filter on the ADC output and handle SPI or UART communication without dropping samples. For a single-function measurement controller, the 4 KB Flash and 256 bytes RAM are tight but workable — the application code is typically a state machine that reads the ADC, applies a correction, and sends the result.
The 24-TSSOP package is a fine-pitch surface-mount footprint — 0.65 mm lead pitch, 4.4 mm body width. Standard reflow profile applies; no special bake-out required for MSL level (not stated, but typical for this package class). On-chip peripherals include brown-out reset, a PWM timer, and a watchdog timer — enough to supervise the supply and generate a periodic wake-up without external components. The 11 I/O lines cover the ADC inputs, SPI/UART bus, and a few control signals.
Active production — no lifecycle risk for new designs
No end-of-life notice, no last-time-buy window. The MSP430F2xx family has been in production for over a decade and continues to receive toolchain and software support from TI.