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MSP430F67641A

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Low-cost polyphase metering SoC with 3 Sigma-Delta ADCs, 10-bit SAR ADC, LCD, 128KB Flash, 8KB RAM

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MSP430F67641A

ACTIVE
Data sheet Order now

Product details

Frequency (MHz) 25 Nonvolatile memory (kByte) 128 RAM (kByte) 8 ADC type 24-bit Sigma Delta Number of ADC channels 3 Number of GPIOs 72 Features Advanced sensing, LCD, Real-time clock UART 3 USB No Number of I2Cs 1 SPI 4 Number of comparator channels 0 Timers - 16-bit 4 Bootloader (BSL) UART Operating temperature range (°C) -40 to 85 Rating Catalog
Frequency (MHz) 25 Nonvolatile memory (kByte) 128 RAM (kByte) 8 ADC type 24-bit Sigma Delta Number of ADC channels 3 Number of GPIOs 72 Features Advanced sensing, LCD, Real-time clock UART 3 USB No Number of I2Cs 1 SPI 4 Number of comparator channels 0 Timers - 16-bit 4 Bootloader (BSL) UART Operating temperature range (°C) -40 to 85 Rating Catalog
LQFP (PN) 80 196 mm² 14 x 14 LQFP (PZ) 100 256 mm² 16 x 16
  • Accuracy <0.5% Over 2000:1 Dynamic Range for Phase Current
  • Meets or Exceeds ANSI C12.20 and IEC 63053 Standards
  • Support for Multiple Sensors Such as Current Transformers, Rogowski Coils, or Shunts
  • Power Measurement for up to Three Phases
  • Four-Quadrant Measurement per Phase or Cumulative
  • Exact Phase-Angle Measurements
  • Digital Phase Correction for Current Transformers
  • 40-Hz to 70-Hz Line Frequency Range Using Single Calibration
  • Flexible Power Supply Options With Automatic Switching
  • Display Operates at Very Low Power During AC Mains Failure: 3 µA in LPM3
  • Real-Time Clock (RTC) Module Operating from Dedicated Power Supply (AUXVCC3) Offering Integrated Offset and Temperature Calibration Features
  • Multiple Communication Interfaces for Smart Meter Implementations
  • High-Performance 25-MHz CPU With 32-Bit Multiplier
  • Up to 128KB of Flash With Single-Cycle Execution
  • Up to 8KB of RAM With Single-Cycle Access
  • Up to Three Independent 24-Bit Sigma-Delta Analog-to-Digital Converters (ADCs) With Differential Inputs and Variable Gain
  • System ADC:
    10-Bit 200-ksps 6-Channel Plus Temperature Sensor and Supply Measurement
  • Wide Input Supply-Voltage Range:
    1.8 V to 3.6 V
  • Ultra-Low Power Consumption During Energy Measurement
    • 3.0 mW at 10-MHz Operation (3.0 V)
  • Multiple Low-Power Modes
    • Standby Mode (LPM3): 2.5 µA at 3 V, Wake up in 3 µs (Typical)
    • RTC Mode (LPM3.5): 1.24 µA at 3 V (Typical)
    • Shutdown Mode (LPM4.5): 0.78 µA at 3 V (Typical)
  • LCD Driver With Contrast Control for up to 320 Segments
  • Password-Protected RTC With Crystal Offset Calibration and Temperature Compensation
  • Four Communications Ports
    • Configurable Among Four UART, Three SPI, and One I2C Interfaces
  • Four 16-Bit Timers With Nine Capture/Compare Registers
  • 100-Pin LQFP (PZ) Package With 72 I/O Pins
  • 80-Pin LQFP (PN) Package With 52 I/O Pins
  • Industrial Temperature Range of –40°C to 85°C
  • Development Tool (Also See Tools and Software)
  • Accuracy <0.5% Over 2000:1 Dynamic Range for Phase Current
  • Meets or Exceeds ANSI C12.20 and IEC 63053 Standards
  • Support for Multiple Sensors Such as Current Transformers, Rogowski Coils, or Shunts
  • Power Measurement for up to Three Phases
  • Four-Quadrant Measurement per Phase or Cumulative
  • Exact Phase-Angle Measurements
  • Digital Phase Correction for Current Transformers
  • 40-Hz to 70-Hz Line Frequency Range Using Single Calibration
  • Flexible Power Supply Options With Automatic Switching
  • Display Operates at Very Low Power During AC Mains Failure: 3 µA in LPM3
  • Real-Time Clock (RTC) Module Operating from Dedicated Power Supply (AUXVCC3) Offering Integrated Offset and Temperature Calibration Features
  • Multiple Communication Interfaces for Smart Meter Implementations
  • High-Performance 25-MHz CPU With 32-Bit Multiplier
  • Up to 128KB of Flash With Single-Cycle Execution
  • Up to 8KB of RAM With Single-Cycle Access
  • Up to Three Independent 24-Bit Sigma-Delta Analog-to-Digital Converters (ADCs) With Differential Inputs and Variable Gain
  • System ADC:
    10-Bit 200-ksps 6-Channel Plus Temperature Sensor and Supply Measurement
  • Wide Input Supply-Voltage Range:
    1.8 V to 3.6 V
  • Ultra-Low Power Consumption During Energy Measurement
    • 3.0 mW at 10-MHz Operation (3.0 V)
  • Multiple Low-Power Modes
    • Standby Mode (LPM3): 2.5 µA at 3 V, Wake up in 3 µs (Typical)
    • RTC Mode (LPM3.5): 1.24 µA at 3 V (Typical)
    • Shutdown Mode (LPM4.5): 0.78 µA at 3 V (Typical)
  • LCD Driver With Contrast Control for up to 320 Segments
  • Password-Protected RTC With Crystal Offset Calibration and Temperature Compensation
  • Four Communications Ports
    • Configurable Among Four UART, Three SPI, and One I2C Interfaces
  • Four 16-Bit Timers With Nine Capture/Compare Registers
  • 100-Pin LQFP (PZ) Package With 72 I/O Pins
  • 80-Pin LQFP (PN) Package With 52 I/O Pins
  • Industrial Temperature Range of –40°C to 85°C
  • Development Tool (Also See Tools and Software)

The TI MSP430F676x1A polyphase metering SoCs are powerful highly integrated solutions for revenue meters that offer accuracy and low system cost with few external components. The MSP430F676x1A uses the low-power MSP430™ CPU with a 32-bit multiplier to perform all energy calculations, metering applications such as tariff rate management, and communications with AMR or AMI modules.

The MSP430F676x1A features TI’s 24-bit sigma-delta converter technology, which provides better than 0.5% accuracy. Family members include up to 128KB of flash and 8KB of RAM and an LCD controller with support for up to 320 segments. The ultra-low-power nature of the MSP430F676x1A means that the system power supply can be minimized to reduce overall cost. Lowest standby power means that backup energy storage can be minimized, and critical data retained longer in case of a mains power failure.

The MSP430F676x1A family executes the TI energy measurement software library, which calculates all relevant energy and power results. The energy measurement software library is available with the MSP430F676x1A at no cost. Industry-standard development tools and hardware platforms are available to speed development of meters that meet all of the ANSI and IEC standards globally.

For complete module descriptions, see the MSP430F5xx and MSP430F6xx Family User’s Guide.

The TI MSP430F676x1A polyphase metering SoCs are powerful highly integrated solutions for revenue meters that offer accuracy and low system cost with few external components. The MSP430F676x1A uses the low-power MSP430™ CPU with a 32-bit multiplier to perform all energy calculations, metering applications such as tariff rate management, and communications with AMR or AMI modules.

The MSP430F676x1A features TI’s 24-bit sigma-delta converter technology, which provides better than 0.5% accuracy. Family members include up to 128KB of flash and 8KB of RAM and an LCD controller with support for up to 320 segments. The ultra-low-power nature of the MSP430F676x1A means that the system power supply can be minimized to reduce overall cost. Lowest standby power means that backup energy storage can be minimized, and critical data retained longer in case of a mains power failure.

The MSP430F676x1A family executes the TI energy measurement software library, which calculates all relevant energy and power results. The energy measurement software library is available with the MSP430F676x1A at no cost. Industry-standard development tools and hardware platforms are available to speed development of meters that meet all of the ANSI and IEC standards globally.

For complete module descriptions, see the MSP430F5xx and MSP430F6xx Family User’s Guide.
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Technical documentation

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Type Title Date
* Data sheet MSP430F676x1A Polyphase Metering SoCs datasheet (Rev. A) PDF | HTML 03 Oct 2018
* Errata MSP430F67641A Device Erratasheet (Rev. R) 24 Apr 2019
* User guide MSP430x5xx and MSP430x6xx Family User's Guide (Rev. Q) 17 Aug 2018
Application note Migration Guide From MSP430 MCUs to MSPM0 MCUs (Rev. A) PDF | HTML 02 Mar 2023
Application note ESD Diode Current Specification (Rev. B) PDF | HTML 23 Aug 2021
Application note MSP430 System-Level ESD Considerations (Rev. B) PDF | HTML 14 Jul 2021
User guide MSP430 MCUs Development Guide Book (Rev. A) PDF | HTML 13 May 2021
Application note Answers to Common Sigma-Delta ADC Questions on MSP MCUs PDF | HTML 11 Aug 2020
Application note MSP430 System ESD Troubleshooting Guide PDF | HTML 13 Dec 2019
Technical article Designing a magnetically immune polyphase smart meter, part 3: comparing isolated PDF | HTML 29 Oct 2018
Technical article Designing a magnetically immune polyphase smart meter, part 2: an overview of isol PDF | HTML 18 Oct 2018
Technical article Designing a magnetically immune polyphase smart meter, part 1: isolated shunt sens PDF | HTML 04 Oct 2018
Application note MSP Code Protection Features PDF | HTML 07 Dec 2015
Application note Implementation of a Low-Cost Three-Phase Watt-Hour Meter Using the MSP430F67641 (Rev. C) 05 Aug 2015
Application note Designing With MSP430™ MCUs and Segment LCDs (Rev. A) PDF | HTML 20 Jul 2015
Application note Using TI’s DLMS COSEM Library 12 Nov 2013

Design & development

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

Evaluation board

EVM430-F6736 — EVM430-F6736 - MSP430F6736 EVM for Metering

This EVM430-F6736 is a single-phase electricity meter evaluation module based on the MSP430F6736 device. The E-meter can be connected to the main power lines and has inputs for voltage and current, as well as a third connection to setup anti-tampering. It allows a customer to test the new (...)
Not available on TI.com
Hardware programming tool

MSP-FET — MSP MCU Programmer and Debugger

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 (...)

User guide: PDF | HTML
Not available on TI.com
Driver or library

MSP-DSPLIB — Digital Signal Processing (DSP) Library for MSP430 Microcontrollers

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 (...)
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Driver or library

MSP-GRLIB — MSP Graphics Library

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 (...)
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Software programming tool

UNIFLASH — UniFlash flash programming tool

UniFlash is a software tool for programming on-chip flash on TI microcontrollers and wireless connectivity devices and on-board flash for TI processors. UniFlash provides both graphical and command-line interfaces.

UniFlash can be run from the cloud on the TI Developer Zone or downloaded and used (...)

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Design tool

MSP-3P-SEARCH — MSP Third party search tool

TI has partnered with multiple companies to offer a wide range of solutions and services for TI MSP devices. These companies can accelerate your path to production using MSP devices. Download this search tool to quickly browse third-party details and find the right third-party to meet your needs.

(...)

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Reference designs

TIDA-01094 — Magnetically Immune Transformerless Power for Isolated Shunt Current Measurement Reference Design

The TIDA-01094 reference design implements a class 0.5 three-phase  transformerless energy measurement system with isolated shunt sensors by using isolated delta-sigma modulators. The delta sigma modulators have their output circuitry capacitively isolated from input circuitry, thereby (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00601 — Multi-phase Energy Measurement with Isolated Shunt Sensors Reference Design

The TIDA-00601 design implements a Class 0.5% three-phase energy measurement system with isolated shunt sensors.  The isolation is achieved through the use of isolated delta-sigma modulators that have output circuitry capacitively isolated from input circuitry.  An energy measurement SoC (...)
User guide: PDF
Schematic: PDF
Reference designs

TIDM-3PH-ENERGY5-ESD — Class 0.5 Three-Phase Energy Measurement System with Enhanced ESD Protection Reference Design

TIDM-3PH-ENERGY5-ESD implements an ANSI/IEC Class 0.5 three-phase energy measurement system with enhanced electrostatic discharge (ESD) protection. The design also features communications through ZigBee™ connectivity. The energy measurement system on chip (SoC) is used to perform all (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
LQFP (PN) 80 Ultra Librarian
LQFP (PZ) 100 Ultra Librarian
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