16 registers, R0 – Program Counter, R1 – Stack Pointer, R2 – Status Register, R2/R3 – Constant Generator, R4 through R15 are general purpose
MSP 430 FG438 driving a glucose meterPhoto of two experimenter boards for the MSP430 chipset by Texas Instruments. On the left the larger chip version, on the right a small version in USB format.