The Texas Instruments MSP430 family of ultra-low-power microcontrollers consist 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 MSP430F22x4/MSP430F22x2 series is an ultra-low-power mixed signal microcontroller with two built-in 16-bit timers, a universal serial communication interface, 10-bit A/D converter with integrated reference and data transfer controller (DTC), two general-purpose operational amplifiers in the MSP430F22x4 devices, and 32 I/O pins.

Typical applications include 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. Stand-alone radio-frequency (RF) sensor front ends are another area of application.

• Low Supply Voltage Range: 1.8 V to 3.6 V
• Ultra-Low Power Consumption
  • Active Mode: 270 µA at 1 MHz, 2.2 V
  • Standby Mode: 0.7 µA
  • Off Mode (RAM Retention): 0.1 µA
• 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 Frequencies to ±1%
  • Internal Very-Low-Power Low-Frequency Oscillator
  • 32-kHz Crystal
  • High-Frequency (HF) Crystal up to 16MHz
  • Resonator
  • External Digital Clock Source
  • External Resistor
• 16-Bit Timer_A With Three Capture/Compare Registers
• 16-Bit Timer_B With Three Capture/Compare Registers
• Universal Serial Communication Interface
  • Enhanced UART Supporting Auto-Baudrate Detection (LIN)
  • IrDA Encoder and Decoder
  • Synchronous SPI
  • I2C™
• 10-Bit 200-ksps Analog-to-Digital (A/D) Converter With Internal Reference, Sample-and-Hold, Autoscan, and Data Transfer Controller
• Two Configurable Operational Amplifiers (MSP430F22x4 Only)
• Brownout Detector
• Serial Onboard Programming, No External Programming Voltage Needed, Programmable Code Protection by Security Fuse
• Bootstrap Loader
• On-Chip Emulation Module
• Family Members Include:
  • MSP430F2232: 8KB + 256B Flash Memory, 512B RAM
  • MSP430F2252: 16KB + 256B Flash Memory, 512B RAM
  • MSP430F2272: 32KB + 256B Flash Memory, 1KB RAM
  • MSP430F2234: 8KB + 256B Flash Memory, 512B RAM
  • MSP430F2254: 16KB + 256B Flash Memory, 512B RAM
  • MSP430F2274: 32KB + 256B Flash Memory, 1KB RAM
• Available in a 38-Pin Thin Shrink Small-Outline Package (TSSOP) (DA), 40-Pin QFN Package (RHA), and 49-Pin Ball Grid Array Package (YFF)
• For Complete Module Descriptions, See the (SLAU144)