描述 Description

The TI 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 MSP430FE42x series are microcontroller configurations with three independent 16-bit sigma-delta ADCs and an embedded signal processor core used to measure and calculate single-phase energy in both 2-wire and 3-wire configurations. Also included are a built-in 16-bit timer, 128-segment LCD drive capability, and 14 I/O pins.

Typical applications include 2-wire and 3-wire single-phase metering including tamper-resistant meter implementations.

特性 Features

? Low Supply Voltage Range: 2.7 V to 3.6 V
? Ultra-Low Power Consumption:
? Active Mode: 400 μA at 1 MHz, 3 V
? Standby Mode: 1.6 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
? Embedded Signal Processing for Single-Phase Energy Metering With Integrated Analog Front End and Temperature Sensor (ESP430CE1)
? 16-Bit Timer_A With Three Capture/Compare Registers
? Integrated LCD Driver for 128 Segments
? Serial Communication Interface (USART), Asynchronous UART or Synchronous SPI Selectable by Software
? Brownout Detector
? Supply Voltage Supervisor and Monitor With Programmable Level Detection
? Serial Onboard Programming, No External Programming Voltage Needed, Programmable Code Protection by Security Fuse
? Bootloader (BSL)
? Family Members Include:
? MSP430FE423 8KB + 256 B of Flash Memory, 256 B?of RAM
? MSP430FE425 16KB + 256 B of Flash Memory, 512 B?of RAM
? MSP430FE427 32KB + 256 B of Flash Memory, 1KB?of RAM

? Available in 64-Pin Quad Flat Pack (LQFP)