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 MSP430G2x55 series are ultra-low-power mixed signal microcontrollers with built-in 16-bit timers, up to 32 I/O touch-sense-enabled pins, a versatile analog comparator, and built-in communication capability using the universal serial communication interface.

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: 250 µA at 1 MHz, 2.2 V
  • Standby Mode: 0.7 µA
  • Off Mode (RAM Retention): 0.1 µA
• Five Power-Saving Modes
• Ultra-Fast Wake-Up From Standby Mode in Less Than 1µs
• 16-Bit RISC Architecture, 62.5-ns Instruction Cycle Time
• Basic Clock Module Configurations
  • Internal Frequencies up to 16 MHz With Four Calibrated Frequency
  • Internal Very-Low-Power Low-Frequency (LF) Oscillator
  • 32-kHz Crystal
  • High-Frequency (HF) Crystal up to 16 MHz
  • External Digital Clock Source
  • External Resistor
• Two 16-Bit Timer_A With Three Capture/Compare Registers
• One 16-Bit Timer_B With Three Capture/Compare Registers
• Up to 32 Touch-Sense-Enabled I/O Pins
• Universal Serial Communication Interface (USCI)
  • Enhanced UART Supporting Auto Baudrate Detection (LIN)
  • IrDA Encoder and Decoder
  • Synchronous SPI
  • I2C™
• On-Chip Comparator for Analog Signal Compare Function or Slope Analog-to-Digital (A/D) Conversion
• 10-Bit 200-ksps Analog-to-Digital (A/D) Converter With Internal Reference, Sample-and-Hold, and Autoscan
• Brownout Detector
• Serial Onboard Programming, No External Programming Voltage Needed, Programmable Code Protection by Security Fuse
• Bootstrap Loader
• On-Chip Emulation Logic
• Package Options
  • TSSOP: 38 Pin (DA)
  • QFN: 40 Pin (RHA)