MSP430F6721A

ACTIVE

Single-phase Metering SoC with 2 Sigma-Delta ADCs, LCD, Real-Time Clock, 32KB Flash, 2KB RAM

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Single-phase Metering SoC with 2 Sigma-Delta ADCs, LCD, Real-Time Clock, 32KB Flash, 2KB RAM

MSP430F6721A

ACTIVE

Product details

Parameters

Features Advanced sensing, LCD, Real-Time Clock Non-volatile memory (kB) 32 RAM (KB) 2 ADC 24-bit Sigma Delta ADC: channels (#) 2 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

  • Low Supply-Voltage Range:
    3.6 V Down to 1.8 V
  • Ultra-Low Power Consumption
    • Active Mode (AM):
      All System Clocks Active
      265 µA/MHz at 8 MHz, 3.0 V, Flash Program Execution (Typical)
      140 µA/MHz at 8 MHz, 3.0 V, RAM Program Execution (Typical)
    • Standby Mode (LPM3):
      Real-Time Clock (RTC) With Crystal, Watchdog, and Supply Supervisor Operational, Full RAM Retention, Fast Wake up:
      1.7 µA at 2.2 V, 2.5 µA at 3.0 V (Typical)
    • Off Mode (LPM4):
      Full RAM Retention, Supply Supervisor Operational, Fast Wake up:
      1.6 µA at 3.0 V (Typical)
    • Shutdown RTC Mode (LPM3.5):
      Shutdown Mode, Active RTC With Crystal:
      1.24 µA at 3.0 V (Typical)
    • Shutdown Mode (LPM4.5):
      0.78 µA at 3.0 V (Typical)
  • Wake up From Standby Mode in 3 µs (Typical)
  • 16-Bit RISC Architecture, Extended Memory, up to 25-MHz System Clock
  • Flexible Power-Management System
    • Fully Integrated LDO With Programmable Regulated Core Supply Voltage
    • Supply Voltage Supervision, Monitoring, and Brownout
    • System Operation From up to Two Auxiliary Power Supplies
  • Unified Clock System
    • FLL Control Loop for Frequency Stabilization
    • Low-Power Low-Frequency Internal Clock Source (VLO)
    • Low-Frequency Trimmed Internal Reference Source (REFO)
    • 32-kHz Crystals (XT1)
  • One 16-Bit Timer With Three Capture/Compare Registers
  • Three 16-Bit Timers With Two Capture/Compare Registers Each
  • Enhanced Universal Serial Communication Interfaces (eUSCIs)
    • eUSCI_A0, eUSCI_A1, and eUSCI_A2
      • Enhanced UART Supports Automatic Baud-Rate Detection
      • IrDA Encoder and Decoder
      • Synchronous SPI
    • eUSCI_B0
      • I2C With Multiple Slave Addressing
      • Synchronous SPI
  • Password-Protected RTC With Crystal Offset Calibration and Temperature Compensation
  • Separate Voltage Supply for Backup Subsystem
    • 32-kHz Low-Frequency Oscillator (XT1)
    • Real-Time Clock
    • Backup Memory (4 × 16 Bits)
  • Three 24-Bit Sigma-Delta Analog-to-Digital Converters (ADCs) With Differential PGA Inputs
  • Integrated LCD Driver With Contrast Control for up to 320 Segments in 8-Mux Mode
  • Hardware Multiplier Supports 32-Bit Operations
  • 10-Bit 200-ksps ADC
    • Internal Reference
    • Sample-and-Hold, Autoscan Feature
    • Up to Six External Channels and Two Internal Channels, Including Temperature Sensor
  • Three-Channel Internal DMA
  • Serial Onboard Programming, No External Programming Voltage Needed
  • Device Comparison Summarizes the Available Family Members
  • Available in 100-Pin and 80-Pin LQFP Packages
  • Single-Phase Electronic Watt-Hour Meter Development Tool (Also See Tools and Software)

All trademarks are the property of their respective owners.

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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 extensive 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 DCO allows the device to wake up from low-power modes to active mode in 3 µs (typical).

The MSP430F673xA and MSP430F672xA devices are microcontrollers with high-performance 24-bit sigma-delta ADCs (three ADCs in MSP430F673xA and two ADCs in MSP430F672xA), a 10-bit ADC, four eUSCIs (three eUSCI_A modules and one eUSCI_B module), four 16-bit timers, a hardware multiplier, a DMA module, an RTC module with alarm capabilities, an LCD driver with integrated contrast control, an auxiliary supply system, and up to 72 I/O pins in the 100‑pin devices and 52 I/O pins in the 80‑pin devices.

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
No results found. Please clear your search and try again. View all 23
Type Title Date
* Datasheet MSP430F673xA, MSP430F672xA Mixed-Signal Microcontrollers datasheet (Rev. A) Oct. 03, 2018
* Errata MSP430F6721A Device Erratasheet (Rev. R) Apr. 24, 2019
* User guide MSP430x5xx and MSP430x6xx Family User's Guide (Rev. Q) Aug. 17, 2018
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 Differences Between MSP430F67xx and MSP430F67xxA Devices (Rev. A) Jan. 13, 2020
Application note MSP430 System-Level ESD Considerations (Rev. A) Jan. 13, 2020
Application note MSP430 System ESD Troubleshooting Guide Dec. 13, 2019
Application note ESD Diode Current Specification (Rev. A) Jul. 10, 2019
Application note MSP430 32-kHz Crystal Oscillators (Rev. D) Jul. 18, 2017
Application note How delta-sigma ADCs work, Part 1 (Rev. A) Sep. 19, 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 Implementation of a Single-Phase Electronic Watt-Hour Meter Using MSP430F6736(A) (Rev. E) Aug. 05, 2015
Application note 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
Application note MSP430 Advanced Power Optimizations: ULP Advisor SW and EnergyTrace Technology Jun. 09, 2014
Application note Using TI’s DLMS COSEM Library Nov. 12, 2013
Application note ULP Temperature-Compensated RTC on MSP430F6736 Apr. 08, 2013
Application note High-Speed, Analog-to-Digital Converter Basics Jan. 11, 2012
Application note A Glossary of Analog-to-Digital Specifications and Performance Characteristics (Rev. B) Oct. 09, 2011
Application note Design of Differential Filters for High-Speed Signal Chains (Rev. B) Apr. 30, 2010

Design & development

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

Hardware development

EVALUATION BOARD Download
199
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 (...)
DEVELOPMENT KIT Download
89
Description

The MSP-TS430PZ100B is a standalone 100-pin 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-TS430PZ100B development board supports MSP430F672x and MSP430F673x MCUs in a 100-pin QFP (...)

Features

 

  • Development board (MSP-TS430PZ100B) with a 100-pin ZIF socket fitting MSP430 derivatives in 100-pin QFP (PZ) 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
  • (...)

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
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 (...)
DRIVER OR LIBRARY Download
Floating Point Math Library for MSP430
MSPMATHLIB MSPMathLib is an accelerated floating point math library for MSP430™ MCUs that delivers up to 26x faster computation for the most commonly used math functions. The library seamlessly integrates with projects to replace floating point math functions such as sin, cos, tan, log, exp and sqrt (...)
Features
  • Up to 26x higher performance when executing floating point scalar math functions
  • Remains in low power modes longer due to the increased performance
  • Free and easy to use –  now integrated in CCS and IAR
GUI FOR EVALUATION MODULE (EVM) Download
Energy Measurement Design Center for MSP430 MCUs
MSP-EM-DESIGN-CENTER The Energy Measurement Design Center is a rapid development tool that enables energy measurement using TI MSP430i20xx and MSP430F67xx flash-based microcontrollers (MCUs). It includes a graphical user interface (GUI), documentation, software library and examples that can simplify development and (...)
Features
  • Supported measurements:
    • Voltage and Current
      • RMS
      • Peak
    • Power and Energy
      • Active
      • Reactive
      • Apparent
    • Power Factor
    • Frequency
  • Supported current sensors:
    • Shunt
    • Current transformer (CT)
    • Rogowski coil (RC)
  • View estimated CPU bandwidth (library only) for supported system configurations
  • Generate source code projects for Code (...)
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 (...)

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 (...)

SUPPORT SOFTWARE Download
SLAC693E.ZIP (349 KB)

Reference designs

REFERENCE DESIGNS Download
One-Phase Metrology with Enhanced ESD Protection Reference Design
TIDM-1PHMTR-ESD This design implements an ANSI/IEC Class 0.2 one-phase energy meter with enhanced ESD protection. The design also features communications through ZigBee™ connectivity.  The e-meter SoC is used to perform all metrology functions and sends active power results to the CC2530EM add-on board (...)
document-generic Schematic
REFERENCE DESIGNS Download
Class 0.2 Single-Phase E-meter
TIDM-SINGLEPHASEMETER This design, featuring the MSP430F6736 device, implements a highly-integrated single-chip electricity metering (e-meter) solution. Hardware and software design files are provided to enable calculation of various parameters for single phase energy measurement, such as RMS current & voltage (...)
document-generic Schematic

CAD/CAE symbols

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

Ordering & quality

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

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