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12-MHz Metering AFE with 1 24-bit Sigma-Delta ADC, 16KB Flash, 512B RAM

MSP430AFE251

ACTIVE

Product details

Parameters

Features Advanced sensing Non-volatile memory (kB) 16 RAM (KB) 0.5 ADC 24-bit Sigma Delta ADC: channels (#) 1 GPIO pins (#) 11 I2C 0 SPI 1 UART 1 Comparator channels (#) 0 Timers - 16-bit 1 Bootloader (BSL) None Special I/O Operating temperature range (C) -40 to 85 Rating Catalog open-in-new Find other MSP430 ultra-low-power MCUs

Package | Pins | Size

TSSOP (PW) 24 34 mm² 7.7 x 4.4 open-in-new Find other MSP430 ultra-low-power MCUs

Features

  • Low Supply Voltage Range: 1.8 V to 3.6 V
  • Ultra-Low Power Consumption
    • Active Mode: 220 µA at 1 MHz, 2.2 V
    • Standby Mode: 0.5 µA
    • Off Mode (RAM Retention): 0.1 µA
  • Five Power-Saving Modes
  • Ultra-Fast Wake-up From Standby Mode in Less Than 1 µs
  • 16-Bit RISC Architecture, up to 12-MHz System Clock
  • Basic Clock Module Configurations
    • Internal Frequencies up to 12 MHz With Two Calibrated Frequencies
    • Internal Very-Low-Power Low-Frequency (LF) Oscillator
    • High-Frequency (HF) Crystal up to 16 MHz
    • Resonator
    • External Digital Clock Source
  • Up to Three 24-Bit Sigma-Delta Analog-to-Digital Converters (ADCs) With Differential PGA Inputs
  • 16-Bit Timer_A With Three Capture/Compare Registers
  • Serial Communication Interface (USART), Asynchronous UART or Synchronous SPI Selectable by Software
  • 16-Bit Hardware Multiplier
  • 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
  • On-Chip Emulation Module
  • Device Comparison Summarizes the Available Family Members
  • For Complete Module Descriptions, See the MSP430x2xx Family User’s Guide

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Description

The TI MSP 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 low-power modes to active mode in less than 1 µs.

The MSP430AFE2x3 devices are ultra-low-power mixed signal microcontrollers integrating three independent 24-bit sigma-delta ADCs, one 16-bit timer, one 16-bit hardware multiplier, USART communication interface, watchdog timer, and 11 I/O pins.

The MSP430AFE2x2 devices are identical to the MSP430AFE2x3, except that there are only two 24-bit sigma-delta ADCs integrated.

The MSP430AFE2x1 devices are identical to the MSP430AFE2x3, except that there is only one 24-bit sigma-delta ADC integrated.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet MSP430AFE2x3, MSP430AFE2x2, MSP430AFE2x1 Mixed-Signal Microcontrollers datasheet (Rev. B) Jun. 11, 2018
* Errata MSP430AFE251 Device Erratasheet (Rev. H) May 29, 2018
* User guide MSP430x2xx Family User's Guide (Rev. J) Jul. 01, 2013
User guide MSP430 MCUs Development Guide Book Oct. 09, 2020
Application note Answers to Common Sigma-Delta ADC Questions on MSP MCUs Aug. 11, 2020
Application note MSP430 System ESD Troubleshooting Guide Dec. 13, 2019
Application note ESD Diode Current Specification (Rev. A) Jul. 10, 2019
Application note Migrating from the MSP430F2xx,G2xx Family to the MSP430FR58xx/FR59xx/68xx/69xx (Rev. E) Nov. 03, 2016
Technical articles “Touching” the smart grid infrastructure space with capacitive sensing technology Mar. 31, 2016
Technical articles Don’t miss out on the top training videos of 2015 Dec. 16, 2015
Application note MSP Code Protection Features Dec. 07, 2015
Technical articles How fast is your 32-bit MCU? Jul. 15, 2015
Technical articles Lose power, not data with new FRAM microcontrollers May 20, 2015
Application note Interfacing the MSP430AFE2xx Based Single-Phase E-Meter with a Host Processor Sep. 24, 2014
Application note Programming With the MSP430AFE2xx Family and the MSP430i20xx Family Aug. 10, 2014
Application note Implementation of a Single-Phase Electronic Watt-Hour Meter Using MSP430AFE2xx (Rev. A) May 10, 2013
Application note Design Considerations When Using the MSP430 Graphics Library Oct. 05, 2012
Application note Energy Measurement Results for TI Designed Meter Using MSP430AFE2xx Devices Jul. 30, 2012
White paper Power Management Solutions for Ultra-Low-Power 16-Bit MSP430 MCUs (Rev. D) Mar. 28, 2012

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

DEVELOPMENT KIT Download
89
Description

The MSP-TS430PW24 is a standalone ZIF socket target board used to program and debug the MSP430 MCU in-system through the JTAG interface or the Spy Bi-Wire (2-wire JTAG) protocol.

Device Support: The MSP-TS430PW24 development board supports MSP430AFE2xx MCUs in a 24-pin TSSOP package (TI package code (...)

Features
  • Development board (MSP-TS430PW24) with a ZIF socket fitting MSP430AFE2xx derivatives in 24-pin TSSOP (PW) packages includes an LED indicator, JTAG adapter, and header pin-outs for prototyping
  • Supports all debugging interfaces using a standard 14-pin JTAG header such as the MSP-FET430UIF
HARDWARE PROGRAMMING TOOL Download
115
Description

The MSP-FET is a powerful emulation development tool – often called a debug probe – which allows users to quickly begin development on MSP low-power microcontrollers (MCU).

It supports programming and real-time debugging over both JTAG and SBW interfaces. Furthermore, the MSP-FET also provides a (...)

Features
  • USB debugging interface to connect any MSP430 MCU to a computer for real-time, in-system programming and debugging
  • Enables EnergyTrace™ technology for energy measurement and debugging on all MSP430 and MSP432 devices in the Code Composer Studio and IAR Embedded Workbench development environments
  • (...)
HARDWARE PROGRAMMING TOOL Download
Description

The MSP Gang Programmer (MSP-GANG) is a MSP430™/MSP432™ device programmer that can program up to eight identical MSP430/MSP432 Flash or FRAM devices at the same time. It connects to a host PC using a standard RS-232 or USB connection and provides flexible programming options that allow (...)

Features
  • Quickly and reliably program Flash or FRAM-based MSP devices via RS-232 or USB interface
  • Several programming modes:
    • Interactive Mode – Programming while connected to PC using the MSP GANG Programmer GUI
    • Program from Image – An image can be stored, which contains configuration options and code (...)

Software development

SOFTWARE DEVELOPMENT KIT (SDK) Download
MSP430Ware for MSP Microcontrollers
MSPWARE MSP430Ware is a collection of resources that help users to effectively create and build MSP430 code. These resources support ALL MSP430 microcontrollers (MCUs). As one user mentioned, “It’s essentially everything developers need to become MSP430 microcontroller experts!”

This complete collection of (...)

Features
  • Collection of MSP design resources
  • Available within CCS, as a standalone executable, or as part of TI’s new Cloud-based tools
  • Auto-updates through the web
  • Sleek & intuitive GUI for browsing content
  • Features the MSP Driver Library
  • Automatic filtering of content using a unique 2-pane view
CODE EXAMPLE OR DEMO Download
SLAC487E.ZIP (37 KB)
DRIVER OR LIBRARY Download
Digital Signal Processing (DSP) Library for MSP430 Microcontrollers
MSP-DSPLIB The TI MSP430™ Digital Signal Processing library is a set of optimized functions to perform common signal processing operations for MSP430 microcontrollers. These functions are used in applications where processing-intensive transforms are done in real-time for minimal energy and with very (...)
DRIVER OR LIBRARY Download
MSP Graphics Library
MSP-GRLIB The MSP Graphics Library is a royalty-free set of graphics primitives for displaying images or creating graphical user interfaces (GUIs) on MSP430 and MSP432 microcontroller-based boards that use a graphical display. The graphics library consists of two functional layers: 1) the display driver layer (...)
Features
  • Free license and royalty-free use
  • Simplify and accelerate development of applications
  • Easy-to-maintain code
DRIVER OR LIBRARY Download
Fixed Point Math Library for MSP
MSP-IQMATHLIB The Texas Instruments® MSP IQmath and Qmath Libraries are a collection of highly optimized and high-precision mathematical functions for C programmers to seamlessly port a floating-point algorithm into fixed-point code on MSP430 and MSP432 devices. These routines are typically used in (...)
Features
  • Optimized fixed point functions - reduce development time and enable developers to focus on optimizing application code
  • Up to 100x higher performance when executing common fixed point scalar math functions in CCS – this means the MSP microcontroller can remain in low power modes longer than (...)
DRIVER OR LIBRARY Download
Bootloader (BSL) for MSP low-power microcontrollers
MSPBSL The bootloader (BSL) on MSP430™ microcontrollers (MCUs) lets users communicate with embedded memory in the MSP MCUs during the prototyping phase, final production, and in service. This is done through standard interfaces such as UART, I2C, SPI, and USB. Both the programmable memory (...)
IDE, CONFIGURATION, COMPILER OR DEBUGGER Download
Code Composer Studio™ Integrated Development Environment for MSP Microcontrollers
CCSTUDIO-MSP

Code Composer Studio is an integrated development environment (IDE) that supports TI's Microcontroller and Embedded Processors portfolio. Code Composer Studio comprises a suite of tools used to develop and debug embedded applications. It includes an optimizing C/C++ compiler, source code editor (...)

IDE, CONFIGURATION, COMPILER OR DEBUGGER Download
EnergyTrace Technology
ENERGYTRACE EnergyTrace™ software for MSP430™ MCUs, MSP432™ MCUs, CC13xx wireless MCUs and CC26xx wireless MCUs is an energy-based code analysis tool that measures and displays the energy profile of an application and helps optimize it for ultra-low-power consumption.

As most developers know, it is difficult to (...)

Features
  • Current measurement is enabled for all MSP430 MCUs, MSP432 MCUs and connectivity devices
  • Tracing of CPU states is available on selected MSP430 MCUs, MSP432 MCUs, CC13x2 wireless MCUs and CC26x2 wireless MCUs 
  • Tracing of peripheral states is also available on selected MSP430 MCUs, CC13x2 (...)
IDE, CONFIGURATION, COMPILER OR DEBUGGER Download
IAR Embedded Workbench
Provided by IAR Systems IAR Embedded Workbench includes the IAR C/C++ compiler and C-SPY debugger for building and debugging embedded applications for your selected target microcontroller. The IAR compiler generates highly optimized code for your application, and the debugger is a fully integrated debugger for source and (...)
SOFTWARE PROGRAMMING TOOL Download
UniFlash stand-alone flash tool for microcontrollers, Sitara™; processors and SimpleLink™
UNIFLASH Supported devices: CC13xx, CC25xx, CC26xx, CC3x20, CC3x30, CC3x35, Tiva, C2000, MSP43x, Hercules, PGA9xx, IWR12xx, IWR14xx, IWR16xx, IWR18xx , IWR68xx, AWR12xx, AWR14xx, AWR16xx, AWR18xx.  Command line only: AM335x, AM437x, AM571x, AM572x, AM574x, AM65XX, K2G

CCS Uniflash is a standalone tool used to (...)

CAD/CAE symbols

Package Pins Download
TSSOP (PW) 24 View options

Ordering & quality

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  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

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