16 MHz core — timing and power budget
At 16 MHz the MSP430G2233IPW20 delivers enough throughput for real-time sensor polling, basic PID loops, and UART/I²C transaction handling.
Memory sizing — 2 KB Flash, 256 B RAM
With 2 KB of Flash and 256 bytes of RAM, this MCU is sized for small firmware images. The Flash is field-reprogrammable via the internal bootloader or a Spy-Bi-Wire (SBW) debugger.
20-TSSOP package — field-swappable footprint
The 20-TSSOP package (0.173" body width, 4.40 mm) is a standard surface-mount footprint that can be hand-soldered with a fine-tip iron or reworked with hot air. No exposed pad, no tricky thermal management — just 20 pins with 0.65 mm pitch. For field-service swaps, the pin 1 indicator is clearly marked on the package top.