The Texas Instruments MSP430 family of ultra-low-power microcontrollers consists of several devices featuring different sets of peripherals targeted for various applications. The architecture, combined with five low-power modes, is optimized to achieve extended battery life in 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 in less than 1 µs.
The MSP430G2x21/G2x31 series is an ultra-low-power mixed signal microcontroller with a built-in 16-bit timer and ten I/O pins. The MSP430G2x31 family members have a 10-bit A/D converter and built-in communication capability using synchronous protocols (SPI or I2C).
Typical applications include low-cost sensor systems that capture analog signals, convert them to digital values, and then process the data for display or for transmission to a host system.
Low Supply-Voltage Range: 1.8 V to 3.6 V
Ultra-Low Power Consumption
Active Mode: 220 µA at 1 MHz, 2.2 V
Standby Mode: 0.5 µA
Off Mode (RAM Retention): 0.1 µA
Five Power-Saving Modes
Ultra-Fast Wake-Up From Standby Mode in Less Than 1 µs
16-Bit RISC Architecture, 62.5-ns Instruction Cycle Time
Basic Clock Module Configurations
Internal Frequencies up to 16 MHz With One Calibrated Frequency
Internal Very Low Power Low-Frequency (LF) Oscillator
External Digital Clock Source
16-Bit Timer_A With Two Capture/Compare Registers
Universal Serial Interface (USI) Supporting SPI and I2C
10-Bit 200-ksps A/D Converter With Internal Reference, Sample-and-Hold, and Autoscan (See )
Serial Onboard Programming, No External Programming Voltage Needed, Programmable Code Protection by Security Fuse
On-Chip Emulation Logic With Spy-Bi-Wire Interface
Available in 14-Pin Plastic Small-Outline Thin Package (TSSOP) (PW), 14-Pin Plastic Dual Inline Package (PDIP) (N), and 16-Pin QFN Package (RSA)