• Low Supply-Voltage Range, 1.8 V . . . 3.6 V
• Ultralow-Power Consumption:
  • Active Mode: 200 µA at 1 MHz, 2.2 V
  • Standby Mode: 0.7 µA
  • Off Mode (RAM Retention): 0.1 µA
• Five Power-Saving Modes
• Wake-Up From Standby Mode in less than 6 µs
• Frequency-Locked Loop, FLL+
• 16-Bit RISC Architecture, 125-ns Instruction Cycle Time
• Scan IF for Background Water, Heat, and Gas Volume Measurement
• 16-Bit Timer_A With Three Capture/Compare Registers
• 16-Bit Timer_A With Five Capture/Compare Registers
• Integrated LCD Driver for 96 Segments
• On-Chip Comparator
• Serial Onboard Programming, No External Programming Voltage Needed Programmable Code Protection by Security Fuse
• Brownout Detector
• Supply Voltage Supervisor/Monitor With Programmable Level Detection
• Bootstrap Loader in Flash Devices
• Family Members Include:
  • MSP430FW423: 8KB + 256B Flash Memory, 256B RAM
  • MSP430FW425: 16KB + 256B Flash Memory, 512B RAM
  • MSP430FW427: 32KB + 256B Flash Memory, 1KB RAM
• Available in 64-Pin Quad Flat Pack (QFP)
• For Complete Module Descriptions, Refer to the MSP430x4xx Family User’s Guide, Literature Number SLAU056

The Texas Instruments MSP430 family of ultralow 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 attribute to maximum code efficiency. The digitally controlled oscillator (DCO) allows wake-up from low-power modes to active mode in less than 6µs.

The MSP430xW42x series are microcontroller configurations with two built-in 16-bit timers, a comparator, 96 LCD segment drive capability, a scan interface, and 48 I/O pins.

Typical applications include sensor systems that capture analog signals, convert them to digital values, and process the data and transmit them to a host system. The comparator and timers make the configurations ideal for gas, heat, and water meters, industrial meters, counter applications, handheld meters, etc.