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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.