16MHz integrated analog microcontroller with 2KB FRAM, Op-Amp, TIA, Comparator w/ DAC, 10-bit ADC

16MHz integrated analog microcontroller with 2KB FRAM, Op-Amp, TIA, Comparator w/ DAC, 10-bit ADC



Product details


Features OpAmp, Real-time clock, Transimpedance amplifier Non-volatile memory (kB) 2 RAM (KB) 1 ADC 10-bit SAR ADC: channels (#) 8 GPIO pins (#) 16 I2C 1 SPI 2 UART 1 Comparator channels (#) 2 Timers - 16-bit 2 Bootloader (BSL) I2C, 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

TSSOP (PW) 16 22 mm² 5 x 4.4 TSSOP (PW) 20 42 mm² 6.5 x 6.4 VQFN (RGY) 16 14 mm² 4 x 3.5 open-in-new Find other MSP430 ultra-low-power MCUs


  • Embedded microcontroller
    • 16-bit RISC architecture up to 16 MHz
    • Wide supply voltage range from 3.6 V down to 1.8 V (minimum supply voltage is restricted by SVS levels, see the SVS Specifications)
  • Optimized low-power modes (at 3 V)
    • Active mode: 126 µA/MHz
    • Standby: real-time clock (RTC) counter (LPM3.5 with 32768-Hz crystal): 0.71 µA
    • Shutdown (LPM4.5): 32 nA without SVS
  • High-performance analog
    • Transimpedance amplifier (TIA) (1)
      • Current-to-voltage conversion
      • Half-rail input
      • Low-leakage negative input down to 5 pA, enabled on TSSOP16 package only
      • Rail-to-rail output
      • Multiple input selections
      • Configurable high-power and low-power modes
    • 8-channel 10-bit analog-to-digital converter (ADC)
      • Internal 1.5-V reference
      • Sample-and-hold 200 ksps
    • Enhanced comparator (eCOMP)
      • Integrated 6-bit digital-to-analog converter (DAC) as reference voltage
      • Programmable hysteresis
      • Configurable high-power and low-power modes
    • Smart analog combo (SAC-L1)
      • Supports general-purpose op amp
      • Rail-to-rail input and output
      • Multiple input selections
      • Configurable high-power and low-power modes
  • Low-power ferroelectric RAM (FRAM)
    • Up to 3.75KB of nonvolatile memory
    • Built-in error correction code (ECC)
    • Configurable write protection
    • Unified memory of program, constants, and storage
    • 1015 write cycle endurance
    • Radiation resistant and nonmagnetic
  • Intelligent digital peripherals
    • IR modulation logic
    • Two 16-bit timers with three capture/compare registers each (Timer_B3)
    • One 16-bit counter-only RTC counter
    • 16-bit cyclic redundancy checker (CRC)
  • Enhanced serial communications
    • Enhanced USCI A (eUSCI_A) supports UART, IrDA, and SPI
    • Enhanced USCI B (eUSCI_B) supports SPI and I2C with support for remap feature (see Signal Descriptions)
  • Clock system (CS)
    • On-chip 32-kHz RC oscillator (REFO)
    • On-chip 16-MHz digitally controlled oscillator (DCO) with frequency locked loop (FLL)
      • ±1% accuracy with on-chip reference at room temperature
    • On-chip very low-frequency 10-kHz oscillator (VLO)
    • On-chip high-frequency modulation oscillator (MODOSC)
    • External 32-kHz crystal oscillator (LFXT)
    • External high-frequency crystal oscillator up to 16 MHz (HFXT)
    • Programmable MCLK prescalar of 1 to 128
    • SMCLK derived from MCLK with programmable prescalar of 1, 2, 4, or 8
  • General input/output and pin functionality
    • 16 I/Os on 20-pin package
    • 12 interrupt pins (8 pins of P1 and 4 pins of P2) can wake MCU from LPMs
    • All I/Os are capacitive touch I/Os
  • Development tools and software
  • Family members (also see Device Comparison)
    • MSP430FR2311: 3.75KB of program FRAM and 1KB of RAM
    • MSP430FR2310: 2KB of program FRAM and 1KB of RAM
  • Package options
    • 20-pin TSSOP (PW20)
    • 16-pin TSSOP (PW16)
    • 16-pin VQFN (RGY16)

(1)The transimpedance amplifier was originally given an abbreviation of TRI in descriptive text, pin names, and register names. The abbreviation has changed to TIA in all descriptive text, but pin names and register names still use TRI.

All trademarks are the property of their respective owners.

open-in-new Find other MSP430 ultra-low-power MCUs


The MSP430FR231x FRAM microcontrollers (MCUs) are part of the MSP430™ MCU value line sensing family. The devices integrate a configurable low-leakage transimpedance amplifier (TIA) and a general purpose operational amplifier. The MCUs feature a powerful 16-bit RISC CPU, 16-bit registers, and a constant generator that contribute to maximum code efficiency. The digitally controlled oscillator (DCO) also allows the device to wake up from low-power modes to active mode typically in less than 10 µs. The feature set of these MCUs are well suited for applications ranging from smoke detectors to portable health and fitness accessories.

The ultra-low-power MSP430FR231x MCU family consists of several devices that feature embedded nonvolatile FRAM and different sets of peripherals targeted for various sensing and measurement applications. The architecture, FRAM, and peripherals, combined with extensive low-power modes, are optimized to achieve extended battery life in portable and wireless sensing applications. FRAM is a nonvolatile memory technology that combines the speed, flexibility, and endurance of SRAM with the stability and reliability of flash at lower total power consumption.

The MSP430FR231x MCUs are supported by an extensive hardware and software ecosystem with reference designs and code examples to get your design started quickly. Development kits include the MSP‑EXP430FR2311 LaunchPad™ development kit and the MSP‑TS430PW20 20-pin target development board. TI provides free MSP430Ware™ software, which is available as a component of Code Composer Studio™ IDE desktop and cloud versions within TI Resource Explorer. The MSP430 MCUs are also supported by extensive online collateral, training, and online support through the E2E™ Community Forum.

For complete module descriptions, see the MSP430FR4xx and MSP430FR2xx 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 29
Type Title Date
* Datasheet MSP430FR231x Mixed-Signal Microcontrollers datasheet (Rev. E) Dec. 09, 2019
* Errata MSP430FR2310 Device Erratasheet (Rev. P) Apr. 24, 2019
* User guide MSP430FR4xx and MSP430FR2xx Family User's Guide (Rev. I) Mar. 13, 2019
User guide MSP430 MCUs Development Guide Book Oct. 09, 2020
User guide MSP430 FRAM Devices Bootloader (BSL) User's Guide (Rev. Z) Mar. 23, 2020
Application note Temperature Sensing NTC Circuit With MSP430 Smart Analog Combo (Rev. C) Mar. 09, 2020
Application note High-side current-sensing circuit design with MSP430 smart analog combo (Rev. B) Mar. 06, 2020
Application note Low-noise long-range PIR sensor conditioner circuit MSP430 smart analog combo (Rev. A) Mar. 06, 2020
Application note Low-side bidirectional current sensing circuit with MSP430™ smart analog combo (Rev. A) Mar. 06, 2020
Application note Single-supply low-side unidirectional current-sensing circuit with MSP430 SAC (Rev. A) Mar. 06, 2020
Application note Strain gauge bridge amplifier circuit with MSP430 smart analog combo (Rev. A) Mar. 06, 2020
Application note Temperature Sensing PTC Circuit With MSP430 Smart Analog Combo (Rev. B) Mar. 06, 2020
Application note Transimpedance amplifier circuit with MSP430 smart analog combo (Rev. A) Mar. 06, 2020
Application note MSP430 System-Level ESD Considerations (Rev. A) Jan. 13, 2020
Application note Designing With the MSP430FR4xx and MSP430FR2xx ADC Dec. 30, 2019
Application note MSP430 System ESD Troubleshooting Guide Dec. 13, 2019
White paper Enabling tomorrow’s sensing applications with smart analog microcontrollers (Rev. A) Nov. 22, 2019
Application note How to Use the Smart Analog Combo and Transimpedance Amplifier on MSP430FR2311 (Rev. A) Nov. 15, 2019
Application note Low-Power Battery Voltage Measurement With MSP430FR MCU On-Chip VREF and ADC (Rev. A) Nov. 04, 2019
Application note UART-to-I2C Bridge Using Low-Memory MSP430™ MCUs Sep. 11, 2019
Application note Migrating from MSP430 F2xx and G2xx families to MSP430 FR4xx and FR2xx family (Rev. F) Mar. 26, 2019
Application note Migration from MSP430 FR58xx, FR59xx, and FR6xx to FR4xx and FR2xx (Rev. A) Mar. 26, 2019
E-book Enhance simple analog and digital functions for $0.25 (Rev. B) Feb. 07, 2018
Technical articles “Touching” the smart grid infrastructure space with capacitive sensing technology Mar. 31, 2016
Application note VLO Calibration on the MSP430FR4xx and MSP430FR2xx Family (Rev. A) Feb. 19, 2016
Technical articles Don’t miss out on the top training videos of 2015 Dec. 16, 2015
White paper Building Automation with MSP MCUs Jul. 27, 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

Design & development

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

Hardware development


The MSP-EXP430FR2311 LaunchPad™ development kit is an easy-to-use microcontroller development board for MSP430FR2000, MSP430FR21xx and MSP430FR23xx MCUs. It contains everything needed to start developing quickly including on-board emulation for programming, debugging and energy measurements. The (...)

  • MSP430 ultra-low-power MSP430FR2311 16-bit MCU with 4KB FRAM
  • EnergyTrace™ technology available for ultra-low-power debugging
  • 20-pin LaunchPad standard to leverage the BoosterPack ecosystem
  • Onboard eZ-FET emulation
  • 1 button and 2 LEDs for user interaction
  • Back-channel UART via USB to PC
  • Optical light (...)
  • Note: This kit does not include MSP430FR2xx microcontroller samples. To sample the compatible devices, please visit the product page or select the related MCU after adding the tool to the TI Store cart:

The MSP-FET430U20 bundle (...)


The MSP-TS430PW20 is a standalone zero insertion force (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. The development board supports all MSP430FR2000, MSP430FR21xx or MSP430FR23xx MCUs in a 20-pin or (...)

  • Socket Board to program and debug the 20-pin TSSOP package through the JTAG Interface
  • Access to all device pins
  • Indicator LEDs
  • JTAG connector

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 (...)

  • 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
  • (...)

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 (...)

  • 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

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 (...)

  • 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
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 (...)
  • 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 (...)
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 (...)
Code Composer Studio™ Integrated Development Environment for MSP Microcontrollers

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 (...)

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 (...)

SLAC708E.ZIP (417 KB)

Design tools & simulation

SLAM331C.TSC (567 KB) - TINA-TI Reference Design
SLAM332C.ZIP (6 KB) - TINA-TI Spice Model
SLAM346.TSC (59 KB) - TINA-TI Reference Design
SLAM347.ZIP (6 KB) - TINA-TI Spice Model
Transimpedance Amplifier Circuit
CIRCUIT0020 The transimpedance op amp circuit configuration converts an input current source into an output voltage. The current to voltage gain is based on the feedback resistance. The circuit is able to maintain a constant voltage bias across the input source as the input current changes which benefits many (...)
  • Uses a JFET or CMOS input op amp with low bias current to reduce DC errors
  • A bias voltage can be added to the non-inverting input to set the output
  • Operates within the linear output voltage swing (see Aol specification) to minimize non-linearity errors

View Important Notice covering authorized use (...)

Single-supply, low-side, unidirectional current-sensing circuit
CIRCUIT060001 — This single–supply, low–side, current sensing solution accurately detects load current up to 1A and converts it to a voltage between 50mV and 4.9V. The input current range and output voltage range can be scaled as necessary and larger supplies can be used to accommodate larger swings.
  • Senses Temperature between 25°C - 50°C 
  • Output: 0.05V - 3.25V 
  • Single 3.3V Supply with half-supply reference
Temperature sensing with NTC thermistor circuit
CIRCUIT060002 — This temperature sensing circuit uses a resistor in series with a negative–temperature–coefficient (NTC) thermistor to form a voltage divider, which has the effect of producing an output voltage that is linear over temperature. The circuit uses an op amp in a non–inverting (...)
  • Senses Temperature between 25°C - 50°C 
  • Output: 0.05V - 3.25V 
  • Single 3.3V Supply with half-supply reference
Temperature sensing with PTC thermistor circuit
CIRCUIT060003 — This temperature sensing circuit uses a resistor in series with a positive–temperature–coefficient (PTC) thermistor to form a voltage–divider, which has the effect of producing an output voltage that is linear over temperature. The circuit uses an op amp in a non–inverting (...)
  • Senses Temperature between 0°C - 50°C 
  • Output: 0.05V - 3.25V 
  • Single 3.3V Supply with half-supply reference
Low-noise and long-range PIR sensor conditioner circuit
CIRCUIT060004 — This two stage amplifier design amplifies and filters the signal from a passive infrared (PIR) sensor. The circuit includes multiple low–pass and high–pass filters to reduce noise at the output of the circuit to be able to detect motion at long distances and reduce false triggers. This (...)
  • Single 5V Supply 
  • Passes frequencies between 0.7Hz - 10Hz 
  • AC Gain: 90dB
High-side current sensing with discrete difference amplifier circuit
CIRCUIT060005 — This single–supply, high–side, low–cost current sensing solution detects load current between 50mA and 1A and converters it to an output voltage from 0.25V to 5V. High–side sensing allows for the system to identify ground shorts and does not create a ground disturbance on the load.
  • Single 36V supply 
  • Input: 50mA to 1A 
  • Output: 0.25V to 5V
Bridge amplifier circuit
CIRCUIT060006 — A strain gauge is a sensor whose resistance varies with applied force. To measure the variation in resistance, the strain gauge is placed in a bridge configuration. This design uses a 2 op amp instrumentation circuit to amplify a differential signal created by the change in resistance of a strain (...)
  • Single 5V supply with half-supply reference
  • Input: -2.22mV to 2.27mV differential
  • Output: 225mV - 4.72V
  • Strain gauge resistance variation: 115 - 125 Ohms
  • Gain: 1001V/V
Low-side, bidirectional current-sensing circuit
CIRCUIT060007 — This single-supply low-side, bidirectional current sensing solution can accurately detect load currents from –1A to 1A. The linear range of the output is from 110mV to 3.19V. Low-side current sensing keeps the common-mode voltage near ground, and is thus most useful in applications with large (...)
  • Single 5V supply with half-supply reference
  • Input: -2.22mV to 2.27mV differential
  • Output: 225mV - 4.72V 
  • Strain gauge resistance variation: 115 - 125 Ohms 
  • Gain: 1001V/V
Half-wave rectifier circuit
CIRCUIT060009 — The precision half-wave rectifier inverts and transfers only the negative-half input of a time varying input signal (preferably sinusoidal) to its output. By appropriately selecting the feedback resistor values, different gains can be achieved. Precision half-wave rectifiers are commonly used with (...)
  • 5V Split supply 
  • Input: +/-0.2mVpp to +/-4Vpp 
  • Output: 0.1V to 2V

Reference designs

EEPROM Emulation and Sensing With MSP430 FRAM Microcontrollers
TIDM-FRAM-EEPROM — This TI Design reference design describes an implementation of emulating EEPROM using Ferroelectric Random Access Memory (FRAM) technology on MSP430™ ultra-low-power microcontrollers (MCUs) combined with the additional sensing capabilities that can be enabled when using an MCU. The reference (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
TSSOP (PW) 16 View options
TSSOP (PW) 20 View options
VQFN (RGY) 16 View options

Ordering & quality

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

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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