MSP430F67621A

ACTIVE

Low-cost Polyphase Metering SoC with 3 Sigma-Delta ADCs, 10-bit SAR ADC, LCD, 64KB Flash, 4KB RAM

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Low-cost Polyphase Metering SoC with 3 Sigma-Delta ADCs, 10-bit SAR ADC, LCD, 64KB Flash, 4KB RAM

MSP430F67621A

ACTIVE

Product details

Parameters

Features LCD, Real-Time Clock Non-volatile memory (kB) 64 RAM (KB) 4 ADC 24-bit Sigma Delta ADC: channels (#) 3 GPIO pins (#) 72 I2C 1 SPI 4 UART 3 Comparator channels (#) 0 Timers - 16-bit 4 Bootloader (BSL) UART 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

LQFP (PN) 80 196 mm² 14 x 14 LQFP (PZ) 100 256 mm² 16 x 16 open-in-new Find other MSP430 ultra-low-power MCUs

Features

  • 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)

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Description

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

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet MSP430F676x1A Polyphase Metering SoCs datasheet (Rev. A) Oct. 03, 2018
* Errata MSP430F67621A Device Erratasheet (Rev. R) Apr. 24, 2019
* User guides MSP430x5xx and MSP430x6xx Family User's Guide (Rev. Q) Aug. 17, 2018
Application notes MSP430 System-Level ESD Considerations (Rev. A) Jan. 13, 2020
Application notes MSP430 System ESD Troubleshooting Guide Dec. 13, 2019
Application notes ESD Diode Current Specification (Rev. A) Jul. 10, 2019
Application notes General Oversampling of MSP ADCs for Higher Resolution (Rev. A) Apr. 01, 2016
Technical articles Don’t miss out on the top training videos of 2015 Dec. 16, 2015
Application notes MSP Code Protection Features Dec. 07, 2015
Application notes Implementation of a Low-Cost Three-Phase Watt-Hour Meter Using the MSP430F67641 (Rev. C) Aug. 05, 2015
Application notes Designing With MSP430™ MCUs and Segment LCDs (Rev. A) Jul. 20, 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
Technical articles Easily increase functionality in motor drive applications May 19, 2015
Application notes Using TI’s DLMS COSEM Library Nov. 12, 2013

Design & development

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

Hardware development

EVALUATION BOARDS Download
249
Description
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 (...)

Software development

SOFTWARE DEVELOPMENT KITS (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
DRIVERS & LIBRARIES Download
Digital Signal Processing (DSP) Library for MSP430 Microcontrollers
MSP-DSPLIB — The Texas Instruments MSP430™ Digital Signal Processing library is a set of highly optimized functions to perform many common signal processing operations on fixed-point numbers for MSP430 microcontrollers. This function set is typically used in applications where processing-intensive (...)
DRIVERS & LIBRARIES Download
MSP Graphics Library
MSP-GRLIB The MSP Graphics Library is a royalty-free set of graphics primitives for creating graphical user interfaces on MSP430 and MSP432 microcontroller-based boards that have a graphical display. The graphical library consists of two building layers of functionality: the display driver layer, specific to (...)
Features
  • Free license and royalty-free use
  • Simplify and accelerate developmen tof applications
  • Easy-to-maintain code
DRIVERS & LIBRARIES 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 (...)
DRIVERS & LIBRARIES Download
Bootloader (BSL) for MSP low-power microcontrollers
MSPBSL Below are the steps needed in order to both understand and use the MSPBSL effectively across the MSP portfolio. For the most up to date information on what features the BSL on your device supports or which interface methods are needed to communicate with the BSL, please see “TABLE 1. Overview (...)
IDES, CONFIGURATION, COMPILERS & DEBUGGERS 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 (...)

PROGRAMMING TOOLS Download
MSP MCU Programmer and Debugger
MSP-FET To get started developing:
Step 1: Buy the MSP-FET 
Step 2: Refer to the debuggers user’s guide and hardware user’s guide.
Step 3: Refer to debugging video

**The second generation of the MSP-FET is supported in the IDEs since Code Composer Studio™ v7.0, IAR EW430 v7.1 and IAR EWAR v8.10. For use (...)

115
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
  • (...)
PROGRAMMING TOOLS 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 (...)

SUPPORT SOFTWARE Download
SLAC694E.ZIP (329 KB)

CAD/CAE symbols

Package Pins Download
LQFP (PN) 80 View options
LQFP (PZ) 100 View options

Ordering & quality

Support & training

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