The MSP430 incorporates a 16-bit RISC CPU, peripherals, and a flexible clock system that interconnect using a von-Neumann common memory address bus (MAB) and memory data bus (MDB). Partnering a modern CPU with modular memory-mapped analog and digital peripherals, the MSP430 offers solutions for demanding mixed-signal applications.
Key features of the MSP430x4xx family include:
    Ultralow-power architecture extends battery life
 0.1-μA RAM retention
 0.8-μA real-time clock mode
 250-μA / MIPS active
    High-performance analog ideal for precision measurement
 12-bit or 10-bit ADC — 200 ksps, temperature sensor, VRef
 12-bit dual-DAC
 Comparator-gated timers for measuring resistive elements
 Supply voltage supervisor
    16-bit RISC CPU enables new applications at a fraction of the code size.
 Large register file eliminates working file bottleneck
 Compact core design reduces power consumption and cost
 Optimized for modern high-level programming
 Only 27 core instructions and seven addressing modes
 Extensive vectored-interrupt capability
 In-system programmable Flash permits flexible code changes, field upgrades and data logging

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MSP430x4xx Family　User guide.pdf