8 MHz, 1 KB Flash — the ultra-low-power sensor controller
This is a 16-bit MSP430 CPU16 core running at 8 MHz, with 1 KB of program Flash and 128 bytes of RAM. The memory budget suits small state machines, periodic sensor readouts, and single-function control loops — think a temperature monitor that wakes every second, takes a slope A/D reading, and drives a GPIO. Fourteen I/O lines handle a keypad, an LED bank, or a simple serial interface.
Slope A/D and peripherals — no external ADC needed
The integrated slope A/D converter provides a simple, low-cost way to digitize a slow analog signal — typically a thermistor, potentiometer, or resistive bridge. It uses the comparator and a timing reference, so no external ADC chip is needed. POR and WDT are on-chip, covering brown-out and watchdog supervision without external reset or watchdog ICs. The 14 I/O pins are 5 V tolerant on most MSP430 derivatives; verify the absolute-max rating in the datasheet if interfacing to 5 V logic.