What this 16-bit MSP430 brings to the bench
1 KB Flash and 128 bytes RAM — sizing the firmware budget
With only 1 KB of Flash (organized as 1K x 8 plus 256 bytes for info memory) and 128 bytes of RAM, this part is strictly for lightweight tasks. Think reading a single analog channel via the on-chip slope A/D converter, toggling a few GPIOs, and managing a simple state machine. The firmware engineer will need to hand-optimise the C code or drop to assembly for anything beyond a basic polling loop — there's no room for a full RTOS or a large lookup table. The 128-byte RAM also means the call stack depth is limited; watch for stack overflow when using nested interrupts.
Peripheral set and I/O — what connects where
The MSP430F2001IPWR includes a brown-out detect/reset (BOR), power-on reset (POR), a PWM timer, and a watchdog timer (WDT) — all standard for reliable single-chip operation. The 10 I/O pins are shared with the slope A/D converter inputs, so you trade analog channels for digital pins.
It's also RoHS3 compliant, so no exemption-expiry worries for European or California-market builds.