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MSP430G2303

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16 MHz MCU with 4KB Flash, 256B SRAM, UART/SPI/I2C, timer

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MSP430G2303

ACTIVE
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Product details

CPU MSP430 Frequency (MHz) 16 Flash memory (kByte) 4 RAM (kByte) 0.25 Features Real-time clock, Spy-bi-wire, Watchdog timer UART 1 Number of ADC channels 0 SPI 2 USB No Hardware accelerators 0 Operating temperature range (°C) -40 to 85 Rating Catalog Communication interface I2C, SPI, UART Operating system BareMetal (No OS), TI RTOS Nonvolatile memory (kByte) 4 Number of GPIOs 24 Number of I2Cs 1 Security Secure debug
CPU MSP430 Frequency (MHz) 16 Flash memory (kByte) 4 RAM (kByte) 0.25 Features Real-time clock, Spy-bi-wire, Watchdog timer UART 1 Number of ADC channels 0 SPI 2 USB No Hardware accelerators 0 Operating temperature range (°C) -40 to 85 Rating Catalog Communication interface I2C, SPI, UART Operating system BareMetal (No OS), TI RTOS Nonvolatile memory (kByte) 4 Number of GPIOs 24 Number of I2Cs 1 Security Secure debug
TSSOP (PW) 20 41.6 mm² 6.5 x 6.4 TSSOP (PW) 28 62.08 mm² 9.7 x 6.4 VQFN (RHB) 32 25 mm² 5 x 5
  • Low Supply-Voltage Range: 1.8 V to 3.6 V
  • Ultra-Low Power Consumption
    • Active Mode: 230 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, 62.5-ns Instruction Cycle Time
  • Basic Clock Module Configurations
    • Internal Frequencies up to 16 MHz With Four Calibrated Frequencies
    • Internal Very-Low-Power Low-Frequency (LF) Oscillator
    • 32-kHz Crystal
    • External Digital Clock Source
  • Two 16-Bit Timer_A With Three Capture/Compare Registers
  • Up to 24 Capacitive-Touch Enabled I/O Pins
  • Universal Serial Communication Interface (USCI)
    • Enhanced UART Supports Automatic Baud-Rate Detection (LIN)
    • IrDA Encoder and Decoder
    • Synchronous SPI
    • I2C
  • 10-Bit 200-ksps Analog-to-Digital Converter (ADC) With Internal Reference, Sample-and-Hold, and Autoscan (See )
  • Brownout Detector
  • Serial Onboard Programming,
    No External Programming Voltage Needed,
    Programmable Code Protection by Security Fuse
  • On-Chip Emulation Logic With Spy-Bi-Wire Interface
  • Summarizes Available Family Members
  • Package Options
    • TSSOP: 20 Pin, 28 Pin
    • PDIP: 20 Pin
    • QFN: 32 Pin
  • Low Supply-Voltage Range: 1.8 V to 3.6 V
  • Ultra-Low Power Consumption
    • Active Mode: 230 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, 62.5-ns Instruction Cycle Time
  • Basic Clock Module Configurations
    • Internal Frequencies up to 16 MHz With Four Calibrated Frequencies
    • Internal Very-Low-Power Low-Frequency (LF) Oscillator
    • 32-kHz Crystal
    • External Digital Clock Source
  • Two 16-Bit Timer_A With Three Capture/Compare Registers
  • Up to 24 Capacitive-Touch Enabled I/O Pins
  • Universal Serial Communication Interface (USCI)
    • Enhanced UART Supports Automatic Baud-Rate Detection (LIN)
    • IrDA Encoder and Decoder
    • Synchronous SPI
    • I2C
  • 10-Bit 200-ksps Analog-to-Digital Converter (ADC) With Internal Reference, Sample-and-Hold, and Autoscan (See )
  • Brownout Detector
  • Serial Onboard Programming,
    No External Programming Voltage Needed,
    Programmable Code Protection by Security Fuse
  • On-Chip Emulation Logic With Spy-Bi-Wire Interface
  • Summarizes Available Family Members
  • Package Options
    • TSSOP: 20 Pin, 28 Pin
    • PDIP: 20 Pin
    • QFN: 32 Pin

The TI MSP family of ultra-low-power microcontrollers consists of several devices that feature 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 MSP430G2x03 and MSP430G2x33 devices are ultra-low-power mixed-signal microcontrollers with built-in 16-bit timers, up to 24 I/O capacitive-touch enabled pins, and built-in communication capability using the USCI. In addition, the MSP430G2x33 family members have a 10-bit ADC. See for configuration details.

Typical applications include low-cost sensor systems that capture analog signals, convert them to digital values, and then process the data for display or for transmission to a host system.

The TI MSP family of ultra-low-power microcontrollers consists of several devices that feature 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 MSP430G2x03 and MSP430G2x33 devices are ultra-low-power mixed-signal microcontrollers with built-in 16-bit timers, up to 24 I/O capacitive-touch enabled pins, and built-in communication capability using the USCI. In addition, the MSP430G2x33 family members have a 10-bit ADC. See for configuration details.

Typical applications include low-cost sensor systems that capture analog signals, convert them to digital values, and then process the data for display or for transmission to a host system.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet MSP430G2x33, MSP430G2x03 Mixed-Signal Microcontrollers datasheet (Rev. G) PDF | HTML 27 Apr 2016
* Errata MSP430G2303 Microcontroller Errata (Rev. K) PDF | HTML 28 Jun 2021
* User guide MSP430F2xx, MSP430G2xx Family User's Guide (Rev. K) PDF | HTML 25 Aug 2022
Application note Migration Guide From MSP430 MCUs to MSPM0 MCUs (Rev. B) PDF | HTML 02 Jun 2025
Application note Design Considerations When Using the MSP430 Graphics Library (Rev. A) PDF | HTML 09 Aug 2023
Application note ESD Diode Current Specification (Rev. B) PDF | HTML 23 Aug 2021
Application note Migrating from MSP430 F2xx and G2xx families to MSP430 FR4xx and FR2xx family (Rev. G) PDF | HTML 02 Aug 2021
User guide MSP430 MCUs Development Guide Book (Rev. A) PDF | HTML 13 May 2021
Application note MSP430 System ESD Troubleshooting Guide PDF | HTML 13 Dec 2019
White paper Capacitive Touch and MSP Microcontrollers (Rev. A) 27 Apr 2017
Application note Migrating from the MSP430F2xx,G2xx Family to the MSP430FR58xx/FR59xx/68xx/69xx (Rev. E) PDF | HTML 03 Nov 2016
Functional safety information Safety Manual for MSP430G2xx, F5xx, and FR57xx in IEC 60730 Safety Applications (Rev. A) 12 Jan 2016
Application note MSP Code Protection Features PDF | HTML 07 Dec 2015
User guide MSP-TouchPro GUI User Guide (Rev. E) 02 Oct 2015
Application note 1-uA Capacitive Grip Detection Based on MSP430 Microcontrollers (Rev. B) 14 Aug 2013
User guide MSP430 Capacitive Touch Power Designer GUI User's Guide 21 May 2013
Application note Design Considerations When Using the MSP430 Graphics Library 05 Oct 2012
White paper Power Management Solutions for Ultra-Low-Power 16-Bit MSP430 MCUs (Rev. D) 28 Mar 2012
Application note Using the Real-Time-Clock Library (Rev. A) 11 Jan 2011

Design & development

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

Evaluation board

ALGO-3P-UISP1-TI — Algocraft μISP1 Programmer for Texas Instruments devices

μISP can either work connected to a host PC (RS-232, USB, LAN connections are built-in) or in standalone mode.

The programming cycle execution in standalone mode may occur by simply pressing the START button or through some TTL control lines.

Its compact size and versatility allows a simple (...)

From: Algocraft
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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
Hardware programming tool

ALGO-3P-WRITENOW — Algocraft WriteNow! Programmer

WriteNow! Series of In-System Programmers is a breakthrough in the programming industry. The programmers support a large number of devices (microcontrollers, memories, CPLDs and other programmable devices) from various manufacturers and have a compact size for easy ATE/fixture integration. They (...)

From: Algocraft
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Software development kit (SDK)

MSP430-SDK — MSP430-SDK for MSP430 Microcontrollers

MSP430-SDK is a collection of resources that help users to write effective code for MSP430 microcontrollers (MCUs). These resources support ALL MSP430 microcontrollers. As one user mentioned, “It’s essentially everything developers need to become MSP430 microcontroller experts!”

This collection of (...)

Supported products & hardware

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Application software & framework

MSP430-IEC60730-SW-PACKAGE — IEC60730 Software Package

The IEC60730 MSP430 software package was developed to be useful in assisting customers in complying with IEC 60730-1:2010 (Automatic Electrical Controls for Household and Similar Use – Part 1: General Requirements) for up to Class B products, which includes home appliances, arc detectors, (...)

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Code example or demo

SLAC485 — MSP430G2x53, MSP430G2x33, MSP430G2x13, MSP430G2x03 Code Examples

Supported products & hardware

Supported products & hardware
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Driver or library

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

Supported products & hardware

Supported products & hardware
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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 (...)

Supported products & hardware

Supported products & hardware
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Driver or library

MSP430-SMBUS — MSP430 SMBUS Library

The System Management Bus (SMBus) is a single-ended simple two-wire bus for lightweight communication. The MSP430 SMBus Library is a royalty-free set of primitives for enabling communication with external devices supporting SMBus like battery chargers, sensors etc. The library is implemented in (...)

Supported products & hardware

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Getting started

TI-DEVELOPER-ZONE — Start embedded development on your desktop or in the cloud

From evaluation to deployment the TI Developer Zone provides a comprehensive range of software, tools and training to ensure that you have everything you need for each stage of the development process.
Supported products & hardware

Supported products & hardware
Get started
IDE, configuration, compiler or debugger

CCSTUDIO — Code Composer Studio™ integrated development environment (IDE)

Code Composer Studio is an integrated development environment (IDE) for TI's microcontrollers and processors. It is comprised of a rich suite of tools used to build, debug, analyze and optimize embedded applications. Code Composer Studio is available across Windows®, Linux® and macOS® platforms.

(...)

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IDE, configuration, compiler or debugger

ENERGIA — Energia

Energia is an open source & community-driven integrated development environment (IDE) & software framework. Based on the Wiring framework, Energia provides an intuitive coding environment as well as a robust framework of easy-to-use functional APIs & libraries for programming a (...)
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IDE, configuration, compiler or debugger

ENERGYTRACE — EnergyTrace Technology

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 (...)

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IDE, configuration, compiler or debugger

IAR-KICKSTART — IAR Embedded Workbench

IAR Embedded Workbench delivers a complete development toolchain for building and debugging embedded applications for your selected target microcontroller. The included IAR C/C++ Compiler generates highly optimized code for your application, and the C-SPY Debugger is a fully integrated debugger for (...)
From: IAR Systems
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Online training

MSP430-ACADEMY — MSP430™ academy

MSP430™ academy delivers easy-to-use training modules that span a wide range of topics and LaunchPads in the MSP430 MCU portfolio.
Supported products & hardware

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Operating system (OS)

WHIS-3P-SAFERTOS — WITTENSTEIN SAFERTOS Pre-certified safety RTOS

SAFERTOS® is a unique real time operating system designed for embedded processors. It is precertified to IEC 61508 SIL3 and ISO 26262 ASILD standards by TÜV SÜD. SAFERTOS® was crafted specifically for safety by WHIS' team of experts and is used globally in safety critical applications. WHIS and (...)
From: WITTENSTEIN High Integrity Systems
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Software programming tool

MSP430-FLASHER — Command Line Programmer for MSP430™ and SimpleLink™ MSP432™ MCUs

MSPFlasher is an open-source, shell-based (command line) interface for programming MSP430™ and MSP432™ microcontrollers (MCUs) through JTAG and provides the most common programming functions. MSP Flasher can be used to download binary files directly to memory without the need of an IDE (...)

Supported products & hardware

Supported products & hardware
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Software programming tool

UNIFLASH — UniFlash for most TI microcontrollers (MCUs) and mmWave sensors

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-00656 — 24-V, 50-W BLDC Motor Sinusoidal Drive Reference Design for Air Purifier Fans

The TIDA-00656 reference design is a cost-effective, small form-factor (SFF),  three-phase sinusoidal motor drive for brushless DC (BLDC) motor up to a power of 50 W at 24 V. The board accepts 24 V at the input and provides three motor outputs to drive the BLDC motor sinusoidally. By using a (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
TSSOP (PW) 20 Ultra Librarian
TSSOP (PW) 28 Ultra Librarian
VQFN (RHB) 32 Ultra Librarian
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