描述 Description

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 wake-up from low-power modes to active mode in less than 6 μs. The MSP430FE42x2 devices are microcontroller configurations with two independent 16-bit sigma-delta analog-to-digital (A/D) converters and embedded signal processor core used to measure and calculate single-phase energy in both 2-wire and 3-wire configurations. Also included is a built-in 16-bit timer, 128 LCD segment drive capability, and 14 I/O pins.

Typical applications include 2-wire and 3-wire single-phase metering.

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, 3.0 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 (ESP430CE1B)
? 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/Monitor With Programmable Level Detection
? Serial Onboard Programming, No External Programming Voltage Needed, Programmable Code Protection by Security Fuse
? Bootstrap Loader in Flash Devices
? Family Members Include:
? MSP430FE4232 8KB + 256B Flash Memory, 256B RAM
? MSP430FE4242 12KB + 256B Flash Memory, 512B RAM
? MSP430FE4252 16KB + 256B Flash Memory, 512B RAM
? MSP430FE4272 32KB + 256B Flash Memory, 1KB RAM

? Available in 64-Pin Quad Flat Pack (QFP)
? For Complete Module Descriptions, See the MSP430x4xx Family User’s Guide, Literature Number SLAU056