描述 Description

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.

特性 Features

? 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 1?μs
? 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)