16-bit MCU with 2 KB Flash — what the memory means for a BOM line
2 KB Flash, 128 B RAM — sizing the firmware budget
With 2 KB of Flash and 128 bytes of RAM there is no room for a scheduler or large data buffers. The firmware fits a tight state machine, a few configuration constants, and a minimal interrupt handler. The 256-byte information memory segment (part of the 2 KB total) is useful for calibration coefficients or serial-number storage that survives reprogramming. This part is a fit for applications where the entire control logic compiles under 1.5 KB — any larger and you are looking at a higher-density MSP430G2xx variant.