MSP430×21×1

absolute maximum ratings†Voltage applied at V_CC to V_SS .. . . . . . . . . . . . . . . . . −0.3 V to 4.1 V
Voltage applied to any pin (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . .−0.3 V to V_CC+0.3 V
Diode current at any device terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±2 mA
Storage temperature, Tstg (unprogrammed device, see Note 3) . . . . . . . . . . . −55°C to 150°C
Storage temperature, Tstg (programmed device, see Note 3) . . . . . . . . . . . . . ..−40°C to 85°C

The Texas Instruments MSP430×21×1 ultralow power microcontrollers consist of several devices featuringdifferent sets of peripherals targeted for various applications. The architecture, combined with five low powermodes is optimized to achieve extended battery life in portable measurement applications. The MSP430×21×1 featuresa powerful 16-bit RISC CPU, 16-bit registers, and constant generators that attribute to maximum code efficiency.The digitally controlled oscillator (DCO) of MSP430×21×1 allows wake-up from low-power modes to active mode in less than 1µs.

The MSP430×21×1 series is an ultralow-power mixed signal microcontroller with a built-in 16-bit timer, versatileanalog comparator and sixteen I/O pins.

Typical applications of MSP430×21×1 include sensor systems that capture analog signals, convert them to digital values, and thenprocess the data for display or for transmission to a host system. Stand alone RF sensor front end is anotherarea of application. The analog comparator provides slope A/D conversion capability.