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MSPM33C321A

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160MHz Arm® Cortex®-M33 MCU with TrustZone®, 1MB flash, 256kB SRAM, QSPI, 2x CAN-FD and security

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MSPM33C321A

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Product details

CPU Arm® Cortex®-M33 Frequency (MHz) 160 Flash memory (kByte) 1024 RAM (kByte) 256 ADC type 2 12-bit SAR Features AES encryption, CAN FD, Comparator, DAC, DMA, RTC UART 8 CAN (#) CAN-FD Number of ADC channels 21, 26, 35, 36 SPI 5 Hardware accelerators Arm TrustZone, Floating point unit Edge AI enabled Yes Operating temperature range (°C) -40 to 125 Rating Catalog Communication interface CAN-FD, I2C, LIN, QSPI, SPI, UART Operating system BareMetal (No OS), FreeRTOS, Zephyr RTOS Nonvolatile memory (kByte) 1024 Number of GPIOs 41, 57, 73, 93 Number of I2Cs 9 Security Cryptographic acceleration, Hardware-enforced isolation, Secure boot, Secure communication, Secure debug, Secure firmware & software update, Secure storage, Software IP protection
CPU Arm® Cortex®-M33 Frequency (MHz) 160 Flash memory (kByte) 1024 RAM (kByte) 256 ADC type 2 12-bit SAR Features AES encryption, CAN FD, Comparator, DAC, DMA, RTC UART 8 CAN (#) CAN-FD Number of ADC channels 21, 26, 35, 36 SPI 5 Hardware accelerators Arm TrustZone, Floating point unit Edge AI enabled Yes Operating temperature range (°C) -40 to 125 Rating Catalog Communication interface CAN-FD, I2C, LIN, QSPI, SPI, UART Operating system BareMetal (No OS), FreeRTOS, Zephyr RTOS Nonvolatile memory (kByte) 1024 Number of GPIOs 41, 57, 73, 93 Number of I2Cs 9 Security Cryptographic acceleration, Hardware-enforced isolation, Secure boot, Secure communication, Secure debug, Secure firmware & software update, Secure storage, Software IP protection
LQFP (PZ) 100 256 mm² 16 x 16
  • Core
    • 160MHz Arm 32-bit Cortex-M33 CPU with TrustZone, FPU, and DSP extensions
    • 4kB instruction cache for 0 wait-state execution
  • Operating characteristics
    • Extended temperature: –40°C up to 125°C
    • Wide supply voltage range: 1.71 V to 3.6 V
  • Memories
    • Up to 1MB of flash memory with error correction code (ECC)
      • Dual-bank with address swap
    • 256kB of SRAM with ECC
    • EEPROM operations using 32kB high-endurance data flash

  • Security

    • Immutable Root of Trust (RoT) in ROM, supports secure firmware installation, boot and key provisioning

    • Global Security Controller with dynamic access controls for flash, SRAM, and peripherals

    • AES256 hardware accelerator with GCM

    • SHA256 hardware accelerator with HMAC

    • Public Key Accelerator (PKA)

    • 32-bit true random number generator (TRNG)

  • High-performance analog peripherals
    • Two high-speed 9.4-Msps 12bit analog-to-digital converters (ADCs) with up to 36 external channels
    • Two high-speed/low-power comparators (COMP)
    • Two externally available 8-bit DACs
    • Configurable 1.4V or 2.5V internal shared voltage reference (VREF)
    • Integrated temperature & supply monitor
  • Optimized low-power modes
    • RUN: 207µA/MHz (CoreMark)
    • STANDBY: 16µA with CPU execution resume and 64kB SRAM retention
    • SHUTDOWN: <100nA with IO wake-up capability
  • Optimized digital peripherals
    • Two DMA controllers with 16 total channels
    • Nine timers support up to 30 PWM channels
      • Two 16-bit advanced timers with deadband, fault handling, and complementary pair

      • Four 16-bit general-purpose timers

      • One 32-bit general-purpose timer
      • Two 16-bit general-purpose timer supporting quadrature encoder interface
    • One window-watchdog timer
    • CRC16/32 module
  • Enhanced communication interfaces
    • Quad SPI (QSPI) for external memory up to 20Mbytes/s
    • Two Controller Area Network (CAN) interfaces support CAN 2.0A/B and CAN-FD
    • Three configurable serial interfaces supporting UART (LIN) or I2C (SMBus/PMBus)
    • Four configurable serial interfaces supporting UART, I2C, or SPI
    • Two dedicated I2C interfaces support up to FM+ (1Mbit/s), SMBus/PMBus

    • One dedicated SPI interface

    • One dedicated UART interface supporting LIN, IrDA, DALI, Smart Card, Manchester
    • Two digital audio interfaces support full duplex I2S and TDM (16-slots)
  • VBAT island (auxiliary supply)
    • Independent supply with dedicated VBAT pin
    • Real-time clock (RTC)
    • Three tamper detection IO with timestamp
    • Independent watchdog timer (IWDT)
    • 32B backup memory
  • Clock system
    • Internal 32MHz oscillator (SYSOSC)
    • Phase-locked loop (PLL)
    • Internal 32kHz oscillator (LFOSC)
    • External 4 to 48MHz crystal oscillator (HFXT)
    • External 32kHz crystal oscillator (LFXT)
    • External clock input
  • Flexible I/O features
    • Up to 93 GPIOs
  • Development support
    • 2-pin serial wire debug (SWD)
  • Package options
    • 100-pin LQFP (0.4mm & 0.5mm pitch)
    • 80-pin LQFP (0.5mm pitch)
    • 64-pin LQFP (0.5mm pitch)
    • 48-pin VQFN (0.5mm pitch)
    • 100-pin nFBGA (0.8mm pitch)
  • Family members (also see Device Comparison)
    • MSPM33C321A: 1MB flash, 256KB SRAM
    • MSPM33C3219: 512KB flash, 256KB SRAM
  • Development kits and software (also see Tools and Software)
    • LaunchPad EVM LP-MSPM33C321A
    • MSP Software Development Kit (SDK)
  • Core
    • 160MHz Arm 32-bit Cortex-M33 CPU with TrustZone, FPU, and DSP extensions
    • 4kB instruction cache for 0 wait-state execution
  • Operating characteristics
    • Extended temperature: –40°C up to 125°C
    • Wide supply voltage range: 1.71 V to 3.6 V
  • Memories
    • Up to 1MB of flash memory with error correction code (ECC)
      • Dual-bank with address swap
    • 256kB of SRAM with ECC
    • EEPROM operations using 32kB high-endurance data flash

  • Security

    • Immutable Root of Trust (RoT) in ROM, supports secure firmware installation, boot and key provisioning

    • Global Security Controller with dynamic access controls for flash, SRAM, and peripherals

    • AES256 hardware accelerator with GCM

    • SHA256 hardware accelerator with HMAC

    • Public Key Accelerator (PKA)

    • 32-bit true random number generator (TRNG)

  • High-performance analog peripherals
    • Two high-speed 9.4-Msps 12bit analog-to-digital converters (ADCs) with up to 36 external channels
    • Two high-speed/low-power comparators (COMP)
    • Two externally available 8-bit DACs
    • Configurable 1.4V or 2.5V internal shared voltage reference (VREF)
    • Integrated temperature & supply monitor
  • Optimized low-power modes
    • RUN: 207µA/MHz (CoreMark)
    • STANDBY: 16µA with CPU execution resume and 64kB SRAM retention
    • SHUTDOWN: <100nA with IO wake-up capability
  • Optimized digital peripherals
    • Two DMA controllers with 16 total channels
    • Nine timers support up to 30 PWM channels
      • Two 16-bit advanced timers with deadband, fault handling, and complementary pair

      • Four 16-bit general-purpose timers

      • One 32-bit general-purpose timer
      • Two 16-bit general-purpose timer supporting quadrature encoder interface
    • One window-watchdog timer
    • CRC16/32 module
  • Enhanced communication interfaces
    • Quad SPI (QSPI) for external memory up to 20Mbytes/s
    • Two Controller Area Network (CAN) interfaces support CAN 2.0A/B and CAN-FD
    • Three configurable serial interfaces supporting UART (LIN) or I2C (SMBus/PMBus)
    • Four configurable serial interfaces supporting UART, I2C, or SPI
    • Two dedicated I2C interfaces support up to FM+ (1Mbit/s), SMBus/PMBus

    • One dedicated SPI interface

    • One dedicated UART interface supporting LIN, IrDA, DALI, Smart Card, Manchester
    • Two digital audio interfaces support full duplex I2S and TDM (16-slots)
  • VBAT island (auxiliary supply)
    • Independent supply with dedicated VBAT pin
    • Real-time clock (RTC)
    • Three tamper detection IO with timestamp
    • Independent watchdog timer (IWDT)
    • 32B backup memory
  • Clock system
    • Internal 32MHz oscillator (SYSOSC)
    • Phase-locked loop (PLL)
    • Internal 32kHz oscillator (LFOSC)
    • External 4 to 48MHz crystal oscillator (HFXT)
    • External 32kHz crystal oscillator (LFXT)
    • External clock input
  • Flexible I/O features
    • Up to 93 GPIOs
  • Development support
    • 2-pin serial wire debug (SWD)
  • Package options
    • 100-pin LQFP (0.4mm & 0.5mm pitch)
    • 80-pin LQFP (0.5mm pitch)
    • 64-pin LQFP (0.5mm pitch)
    • 48-pin VQFN (0.5mm pitch)
    • 100-pin nFBGA (0.8mm pitch)
  • Family members (also see Device Comparison)
    • MSPM33C321A: 1MB flash, 256KB SRAM
    • MSPM33C3219: 512KB flash, 256KB SRAM
  • Development kits and software (also see Tools and Software)
    • LaunchPad EVM LP-MSPM33C321A
    • MSP Software Development Kit (SDK)

MSPM33C32xx micontrollers (MCUs) are part of the MSP general purpose 32-bit MCU family operating at up to 160MHz based on the Arm Cortex-M33 32-bit core with Arm TrustZone technology, DSP, and FPU. This family of MCUs features flexible communication interfaces, high-performance analog, and security accelerators. The extended temperature range and wide supply voltage range make this family of MCUs suitable for a variaety industrial, enterprise and personal electronics applications.

MSPM33C32xx MCUs provide up to 1MB of embbeded flash program memory and 256kB SRAM. An additional high-endurance 32kB flash data bank is provided for application data storage. All memories feature built-in error correction code (ECC) across the entire memory range to ensure robust operation across their entire lifetime.

MSPM33C32xx MCUs offer many different types of digital communication interfaces including CAN, I2S/TDM, Quad SPI (QSPI), UART, I2C, and SPI. Configurable serial interfaces can be dynamically assigned in software as UART, I2C and optionaly SPI. Flexilbity in configuraiton and pinout gives system designers a simple path to support challenging requirments.

MSPM33C32xx MCUs also feature high performance integrated analog peripherals such as two 12bit 9.4 MSPS simultaneous sampling ADC and two high-speed comparators. Comparators can be used internally for fault detection with advanced timers or externally as low-power voltage monitors.

MSPM33C32xx MCUs contain a robust collection of security features. TrustZone technology and the Global Security Controller provide a complete feature set to build secure applications. These devices also feature an immutable root of trust (RoT) which provides secure boot, install and key provisioning out of the box. MSPM33C32xx also includes hardware acceleration for AES, SHA and Public Key algorithms (RSA and ECC).

MSPM33C series of devices is pin-to-pin compatible with other MSPM33C devices in the same package. MSPM33C series is also highly pin-to-pin compatible with MSPM0 devices. In scenerios where there are differences between MSPM33C and MSPM0 devices users can use TI System Configurator or provided documentation to understand how to navigate minor incompatibilities.

MSPM33C family of MCUs are supported by an extensive hardware and software ecosystem with reference designs and code examples to get the design started quickly. Development kits include a LaunchPad available for purchase. TI also provides a free MSP Software Development Kit (SDK), which is available as a component of Code Composer Studio™ IDE desktop and cloud version within the TI Resource Explorer. MSPM33C MCUs are also supported by extensive online collateral, training with MSP Academy, and online support through the TI E2E™ support forums.

MSPM33C32xx micontrollers (MCUs) are part of the MSP general purpose 32-bit MCU family operating at up to 160MHz based on the Arm Cortex-M33 32-bit core with Arm TrustZone technology, DSP, and FPU. This family of MCUs features flexible communication interfaces, high-performance analog, and security accelerators. The extended temperature range and wide supply voltage range make this family of MCUs suitable for a variaety industrial, enterprise and personal electronics applications.

MSPM33C32xx MCUs provide up to 1MB of embbeded flash program memory and 256kB SRAM. An additional high-endurance 32kB flash data bank is provided for application data storage. All memories feature built-in error correction code (ECC) across the entire memory range to ensure robust operation across their entire lifetime.

MSPM33C32xx MCUs offer many different types of digital communication interfaces including CAN, I2S/TDM, Quad SPI (QSPI), UART, I2C, and SPI. Configurable serial interfaces can be dynamically assigned in software as UART, I2C and optionaly SPI. Flexilbity in configuraiton and pinout gives system designers a simple path to support challenging requirments.

MSPM33C32xx MCUs also feature high performance integrated analog peripherals such as two 12bit 9.4 MSPS simultaneous sampling ADC and two high-speed comparators. Comparators can be used internally for fault detection with advanced timers or externally as low-power voltage monitors.

MSPM33C32xx MCUs contain a robust collection of security features. TrustZone technology and the Global Security Controller provide a complete feature set to build secure applications. These devices also feature an immutable root of trust (RoT) which provides secure boot, install and key provisioning out of the box. MSPM33C32xx also includes hardware acceleration for AES, SHA and Public Key algorithms (RSA and ECC).

MSPM33C series of devices is pin-to-pin compatible with other MSPM33C devices in the same package. MSPM33C series is also highly pin-to-pin compatible with MSPM0 devices. In scenerios where there are differences between MSPM33C and MSPM0 devices users can use TI System Configurator or provided documentation to understand how to navigate minor incompatibilities.

MSPM33C family of MCUs are supported by an extensive hardware and software ecosystem with reference designs and code examples to get the design started quickly. Development kits include a LaunchPad available for purchase. TI also provides a free MSP Software Development Kit (SDK), which is available as a component of Code Composer Studio™ IDE desktop and cloud version within the TI Resource Explorer. MSPM33C MCUs are also supported by extensive online collateral, training with MSP Academy, and online support through the TI E2E™ support forums.
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Technical documentation

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* Data sheet MSPM33C321x Mixed-Signal Microcontrollers datasheet PDF | HTML 12 Dec 2025
* Errata MSPM33C32xx Mixed Signal Microcontrollers Errata PDF | HTML 08 Dec 2025
* User guide MSPM33 C3-Series 160MHz Microcontrollers Technical Reference Manual 17 Dec 2025
User guide MSPM33C Security User Guide PDF | HTML 11 Dec 2025
Application note Migration Guide between MSPM0Gx5x9 and MSPM33C32xx PDF | HTML 11 Dec 2025
Application note LVGL Use On MSPM33C PDF | HTML 09 Dec 2025
User guide MSPM33 Bootloader User's Guide PDF | HTML 09 Dec 2025
Application note MSPM33 C-Series MCUs Hardware Development Guide PDF | HTML 08 Dec 2025

Design & development

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

Evaluation board

LP-MSPM33C321A — MSPM33C321A LaunchPad™ development kit evaluation module

The MSPM33C321A LaunchPad™ development kit is an easy-to-use evaluation module for the MSPM33C321A microcontroller (MCU). The LaunchPad kit contains everything needed to start development on the MSPM33C321x microcontroller platform, including an onboard debug probe for programming, (...)
User guide: PDF | HTML
Not available on TI.com
Software development kit (SDK)

MSPM33-SDK — MSPM33 Software Development Kit (SDK)

The MSPM33 SDK provides the ultimate collection of software, tools and documentation to accelerate the development of applications for the MSPM33 MCU platform under a single software package.
Supported products & hardware

Supported products & hardware
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Driver or library

MSPM33-RESTRICTED-MCAL — MSPM33 Microcontroller Abstraction Layer for AutoSAR

MSPM33 MCAL Early Adopter Release
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Supported products & hardware
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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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Supported products & hardware
Launch Download options
IDE, configuration, compiler or debugger

SYSCONFIG — Standalone desktop version of SysConfig

SysConfig is a configuration tool designed to simplify hardware and software configuration challenges to accelerate software development.

SysConfig is available as part of the Code Composer Studio™ integrated development environment as well as a standalone application. Additionally SysConfig (...)

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Supported products & hardware
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Software programming tool

UNIFLASH — CCStudio 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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Supported products & hardware
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LQFP (PZ) 100 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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