illustrate

Texas Instruments' MSP430 ultra-low-power microcontroller family includes multiple devices with peripheral sets for a variety of different applications. The architecture, with five low-power modes combined, is optimized to achieve extended battery life in portable measurement applications. The device features a powerful 16-bit RISC CPU, 16-bit registers, and contributes to maximum code efficiency generators. The digitally controlled oscillator (DCO) allows wake-up from low-power mode in active mode in less than 6μs.

The series of microcontrollers configured MSP430FE42x has three independent 16-bit sigma-delta analog-to-digital (A/D) converters and an embedded signal processor core for measuring and calculating two 2-wire and 3-wire single-phase energy configurations.

characteristic

• Low supply voltages range from 2.7 V to 3.6 V
• Ultra-low power consumption:
  • Active mode: 400 microamps at 1 MHz, 3.0 V
  • Standby mode: 1.6 microamps
  • Off mode (RAM hold): 0.1 microamperes
• There are 5 power-saving modes
• Wake up in standby mode for less than 6 microseconds
• Frequency-locked phase-loop, frequency-locked ring+
• 16-bit RISC structure, 125 ns instruction cycle time
• Embedded single-phase energy metering signal processing
  With integrated analog front-end and temperature sensor (ESP430CE1)
• 16-bit 3-way capture Timer_A/comparison register
• 128-segment integrated LCD driver
• Serial Communication Interface (USART), an asynchronous UART
  or synchronous SPI selected by the software
• Power loss detector
• Supply voltage monitor/monitor programmable level detection
• On-board serial programming, no external programming voltage required,
  Programmable security fuse code protection
• The bootloader is on the flash device
• Family members include:
  • MSP430FE423：
    8KB + 256B flash memory,
    256B of memory
  • MSP430FE425：
    16KB Flash Memory + 256B,
    512B of RAM