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 (ESP430CE1A)
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:
-- MSP430FE423A:
8KB + 256B Flash Memory,
256B RAM
-- MSP430FE425A:
16KB + 256B Flash Memory,
512B RAM
-- MSP430FE427A:
32KB + 256B Flash Memory,
1KB RAM
Available in 64-Pin Quad Flat Pack (QFP)
For Complete Module Descriptions, Refer
to the MSP430x4xx Family User’s Guide,
Literature Number SLAU056

description
The Texas InstrumentsMSP430 family of ultra-low-power microcontrollers consist 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 portablemeasurement 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 MSP430FE42xA series are microcontroller configurations with three independent 16-bit sigma-delta 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 are 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 including tamper-resistant meter
implementations.