MSP430FW42x Mixed Signal Microcontroller

MSP430FW42x Mixed Signal Microcontroller - MSP430FW429

The MSP430FW42x series are microcontroller configurations with a unique Scan Interface peripheral, which is dedicated to capturing sensor inputs while in Standby Mode (LPM3). Not only does the MSP430FW42x series provide an ultra-low power sensor interface solution for power-sensitive applications, but it also frees up the CPU for other processing requirements.

Learn about Scan Interface:


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 the device to wake up from low-power modes to active mode in less than 6 µs.

The MSP430FW42x 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, and hand-held meters.


  • Low Supply Voltage Range: 1.8 V to 3.6 V
  • Ultra-Low-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 Interface 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 Up to 96 Segments
  • On-Chip Comparator
  • Serial Onboard Programming, No External Programming Voltage Needed Programmable Code Protection by Security Fuse
  • Brownout Detector
  • Supply Voltage Supervisor and Monitor With Programmable Level Detection
  • Bootstrap Loader (BSL) 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
    • MSP430FW428
      48KB + 256B Flash Memory, 2KB RAM
    • MSP430FW429
      60KB + 256B Flash Memory, 2KB RAM
  • Available in 64-Pin Quad Flat Pack (QFP)
  • For Complete Module Descriptions, See the , Literature Number SLAU056

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Parametrics Compare all products in Other MSP430 MCUs

Non-volatile Memory (KB)
ADC: Channels (#)
GPIO Pins (#)
Comparator Channels (#)
Package Group
Approx. Price (US$)
MSP430FW429 MSP430FW423 MSP430FW425 MSP430FW427 MSP430FW428
60    8    16    32    48   
2    0.125    0.5    1    2   
Slope    Slope    Slope    Slope    Slope   
0    0    0    0    0   
48    48    48    48    48   
0    0    0    0    0   
0    0    0    0    0   
0    0    0    0    0   
2    2    2    2    2   
3.55 | 1ku    2.50 | 1ku    2.80 | 1ku    3.10 | 1ku    3.30 | 1ku