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.
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 Users Guide_, Literature Number SLAU056
