the texas struments msp430 family of ultralow-power microcontrollers consists of several devices featur g different sets of peripherals targeted for various applications. the architecture comb ed with five low power modes is optimized to achieve extended battery life portable measurement applications. the device features a powerful 16-bit risc cpu 16-bit registers and constant generators that contribute to maximum code efficiency. the digitally controlled oscillator (dco) allows wake-up from low-power modes to active mode less than 5 s. the msp430f643x series are microcontroller configurations with four 16-bit timers a high performance 12-bit analog-to-digital (a/d) converter two universal serial communication terfaces (usci) hardware multiplier dma real-time clock module with alarm capabilities comparator and up to 74 i/o p s.