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1.1 Features 1

? Low Supply Voltage Range: 1.8 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

? Three Independent 16-Bit Sigma-Delta Analog-to-

Digital Converters (ADCs) With Differential PGA

Inputs

? 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:

– MSP430F423

8KB + 256 B of Flash Memory, 256 B of RAM

– MSP430F425

16KB + 256 B of Flash Memory, 512 B of RAM

– MSP430F427

32KB + 256 B of Flash Memory, 1KB of RAM

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

? For Complete Module Descriptions, See the

MSP430x4xx Family User's Guide

1.2 Applications

? Handheld Metering Equipment

? Weigh Scales

? Energy Meters

1.3 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 lowpower

modes to active mode in less than 6 μs.

The MSP430F42x series are microcontroller configurations with three independent 16-bit sigma-delta

ADCs, each with an integrated differential programmable gain amplifier input stage. Also included is a

built-in 16-bit timer, 128-segment LCD drive capability, hardware multiplier, and 14 I/O pins.

Typical applications include high-resolution applications such as handheld metering equipment, weigh

scales, and energy meters.