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MSP430F1121A

ACTIVE

Product details

CPU MSP430 Frequency (MHz) 8 Flash memory (kByte) 4 RAM (kByte) 0.25 ADC type Slope Features Real-time clock UART 0 Security Secure debug Number of ADC channels 0 SPI 0 USB No Hardware accelerators 0 Operating temperature range (°C) -40 to 85 Rating Catalog Operating system BareMetal (No OS), TI RTOS Nonvolatile memory (kByte) 4 Number of GPIOs 14 Number of I2Cs 0
CPU MSP430 Frequency (MHz) 8 Flash memory (kByte) 4 RAM (kByte) 0.25 ADC type Slope Features Real-time clock UART 0 Security Secure debug Number of ADC channels 0 SPI 0 USB No Hardware accelerators 0 Operating temperature range (°C) -40 to 85 Rating Catalog Operating system BareMetal (No OS), TI RTOS Nonvolatile memory (kByte) 4 Number of GPIOs 14 Number of I2Cs 0
VQFN (RGE) 24 16 mm² (4 mm × 4 mm) TSSOP (PW) 20 41.6 mm² (6.5 mm × 6.4 mm) SOIC (DW) 20 131.84 mm² (12.8 mm × 10.3 mm) TVSOP (DGV) 20 32 mm² (5 mm × 6.4 mm)
  • Low Supply Voltage Range 1.8 V – 3.6 V
  • Ultralow-Power Consumption
    • Active Mode: 160 µA at 1 MHz, 2.2 V
    • Standby Mode: 0.7 µA
    • Off Mode (RAM Retention): 0.1 µA
  • Wake-Up From Standby Mode in less than 6 µs
  • 16-Bit RISC Architecture, 125 ns Instruction Cycle Time
  • Basic Clock Module Configurations:
    • Various Internal Resistors
    • Single External Resistor
    • 32-kHz Crystal
    • High-Frequency Crystal
    • Resonator
    • External Clock Source
  • 16-Bit Timer_A With Three Capture/Compare Registers
  • On-Chip Comparator for Analog Signal Compare Function or Slope A/D Conversion
  • Serial Onboard Programming, No External Programming Voltage Needed Programmable Code Protection by Security Fuse
  • Family Members Include:
      MSP430C1101: 1KB ROM, 128B RAM
      MSP430C1111: 2KB ROM, 128B RAM
      MSP430C1121: 4KB ROM, 256B RAM
      MSP430F1101A: 1KB + 128B Flash Memory 128B RAM
      MSP430F1111A: 2KB + 256B Flash Memory 128B RAM
      MSP430F1121A: 4KB + 256B Flash Memory 256B RAM
  • Available in a 20-Pin Plastic Small-Outline Wide Body (SOWB) Package, 20-Pin Plastic Small-Outline Thin Package, and 20-Pin TVSOP (F11x1A only) and 24-Pin QFN
  • For Complete Module Descriptions, Refer to the MSP430x1xx Family User’s Guide, Literature Number SLAU049.

  • Low Supply Voltage Range 1.8 V – 3.6 V
  • Ultralow-Power Consumption
    • Active Mode: 160 µA at 1 MHz, 2.2 V
    • Standby Mode: 0.7 µA
    • Off Mode (RAM Retention): 0.1 µA
  • Wake-Up From Standby Mode in less than 6 µs
  • 16-Bit RISC Architecture, 125 ns Instruction Cycle Time
  • Basic Clock Module Configurations:
    • Various Internal Resistors
    • Single External Resistor
    • 32-kHz Crystal
    • High-Frequency Crystal
    • Resonator
    • External Clock Source
  • 16-Bit Timer_A With Three Capture/Compare Registers
  • On-Chip Comparator for Analog Signal Compare Function or Slope A/D Conversion
  • Serial Onboard Programming, No External Programming Voltage Needed Programmable Code Protection by Security Fuse
  • Family Members Include:
      MSP430C1101: 1KB ROM, 128B RAM
      MSP430C1111: 2KB ROM, 128B RAM
      MSP430C1121: 4KB ROM, 256B RAM
      MSP430F1101A: 1KB + 128B Flash Memory 128B RAM
      MSP430F1111A: 2KB + 256B Flash Memory 128B RAM
      MSP430F1121A: 4KB + 256B Flash Memory 256B RAM
  • Available in a 20-Pin Plastic Small-Outline Wide Body (SOWB) Package, 20-Pin Plastic Small-Outline Thin Package, and 20-Pin TVSOP (F11x1A only) and 24-Pin QFN
  • For Complete Module Descriptions, Refer to the MSP430x1xx Family User’s Guide, Literature Number SLAU049.

The Texas Instruments MSP430 family of ultralow power microcontrollers consist of several devices featuring 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 attribute to maximum code efficiency. The digitally controlled oscillator (DCO) allows wake-up from low-power modes to active mode in less than 6µs.

The MSP430x11x1 series is an ultralow-power mixed signal microcontroller with a built-in 16-bit timer, versatile analog comparator and fourteen I/O pins.

Typical applications include 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. Stand alone RF sensor front end is another area of application. The I/O port inputs provide single slope A/D conversion capability on resistive sensors.

The Texas Instruments MSP430 family of ultralow power microcontrollers consist of several devices featuring 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 attribute to maximum code efficiency. The digitally controlled oscillator (DCO) allows wake-up from low-power modes to active mode in less than 6µs.

The MSP430x11x1 series is an ultralow-power mixed signal microcontroller with a built-in 16-bit timer, versatile analog comparator and fourteen I/O pins.

Typical applications include 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. Stand alone RF sensor front end is another area of application. The I/O port inputs provide single slope A/D conversion capability on resistive sensors.

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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet MSP430x11x1, MSP430F11x1A Mixed Signal Microcontrollers datasheet (Rev. I) Dec 11, 2008
* Errata MSP430F1121A Microcontroller Errata (Rev. F) Jun 17, 2021
Application note Migration Guide From MSP430 MCUs to MSPM0 MCUs (Rev. B) PDF | HTML Jun 2, 2025
Application note Design Considerations When Using the MSP430 Graphics Library (Rev. A) PDF | HTML Aug 9, 2023
Application note Li-Ion Battery Charger Solution Using an MSP430™ MCU (Rev. B) PDF | HTML Apr 1, 2022
Application brief Add Housekeeping Functions to Your MSP430™ MCU: Power Sequencer PDF | HTML Sep 7, 2021
Application note ESD Diode Current Specification (Rev. B) PDF | HTML Aug 23, 2021
User guide MSP430 MCUs Development Guide Book (Rev. A) PDF | HTML May 13, 2021
Application note MSP430 System ESD Troubleshooting Guide PDF | HTML Dec 13, 2019
Application note Programming a Flash-Based MSP430 MCU Using the JTAG Interface (Rev. H) Mar 15, 2019
Application note Interfacing the 3-V MSP430 MCU to 5-V Circuits (Rev. A) PDF | HTML Oct 3, 2018
Application note Understanding MSP430 Flash Data Retention (Rev. A) PDF | HTML Aug 24, 2018
Application note MSP430 Flash Memory Characteristics (Rev. B) PDF | HTML Aug 24, 2018
Application note Mixing C and Assembler With MSP430™ MCUs (Rev. A) PDF | HTML Aug 7, 2018
Application note Using the TPS3619 With MSP430 Microcontrollers (Rev. B) PDF | HTML Aug 6, 2018
User guide MSP430x1xx Family User's Guide (Rev. F) Aug 6, 2018
Application note MSP430 LFXT1 Oscillator Accuracy (Rev. A) Aug 3, 2018
Application note Efficient Multiplication and Division Using MSP430 MCUs (Rev. A) Jul 18, 2018
Application note CRC Implementation with MSP430 MCUs (Rev. A) Jun 21, 2018
Application note Implementing An Ultra-Low-Power Keypad Interface With MSP430 MCUs (Rev. A) May 22, 2018
Application note Random Number Generation Using MSP430™ MCUs (Rev. A) May 16, 2018
Application note Wave Digital Filtering Using an MSP430 MCU (Rev. A) May 16, 2018
Application note Software Coding Techniques for MSP430™ MCUs (Rev. B) Mar 14, 2018
Application note MSP430 32-kHz Crystal Oscillators (Rev. D) PDF | HTML Jul 18, 2017
Application note Advanced Debugging Using the Enhanced Emulation Module (EEM) With CCS v6 (Rev. F) Sep 6, 2016
Application note MSP Code Protection Features PDF | HTML Dec 7, 2015
White paper Power Management Solutions for Ultra-Low-Power 16-Bit MSP430 MCUs (Rev. D) Mar 28, 2012
Application note Powering the MSP430 from a High Voltage Input using the TPS62122 (Rev. C) Jan 12, 2012
Application note Tiny DCDC Converter Reference Design (Rev. A) Jun 14, 2010
Application note 1.8V – 5.5V Input, High-Efficiency DCDC Converter Reference Design for MSP430 (Rev. B) Jun 14, 2010

Design & development

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

Evaluation board

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

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Hardware programming tool

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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).

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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 (...)

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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!”

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IDE, configuration, compiler or debugger

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CCStudio™ IDE is part of TI's extensive CCStudio™ development ecosystem and is an integrated development environment for TI's microcontrollers, processors, wireless connectivity devices, and radar sensors. CCStudio IDE is available as desktop or cloud-based applications. The cloud version (...)

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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.

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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 (...)

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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.
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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.
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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 (...)

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Code example or demo

SLAC011 — MSP430x11x, MSP430F21x1 Code Examples

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Code example or demo

SLAC013 — MSP430F11x2, MSP430F12x, MSP430F12x2 Code Examples

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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 (...)

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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

MSP-GANG-SOFTWARE — MSP-GANG Software

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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 (...)

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Software programming tool

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

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Design tool

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

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Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
VQFN (RGE) 24 Ultra Librarian
TSSOP (PW) 20 Ultra Librarian
SOIC (DW) 20 Ultra Librarian
TVSOP (DGV) 20 Ultra Librarian

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