SLAAE56A November   2022  – March 2023 MSPM0G1105 , MSPM0G1106 , MSPM0G1107 , MSPM0G1505 , MSPM0G1506 , MSPM0G1507 , MSPM0G3105 , MSPM0G3106 , MSPM0G3107 , MSPM0G3505 , MSPM0G3506 , MSPM0G3507 , MSPM0L1105 , MSPM0L1106 , MSPM0L1303 , MSPM0L1304 , MSPM0L1304-Q1 , MSPM0L1305 , MSPM0L1305-Q1 , MSPM0L1306 , MSPM0L1306-Q1 , MSPM0L1343 , MSPM0L1344 , MSPM0L1345 , MSPM0L1346

 

  1.   Abstract
  2.   Trademarks
  3. 1MSPM0 Portfolio Overview
    1. 1.1 Introduction
    2. 1.2 Portfolio Comparison of STM32 MCUs to MSPM0 MCUs
  4. 2Ecosystem and Migration
    1. 2.1 Software Ecosystem Comparison
      1. 2.1.1 MSPM0 Software Development Kit (MSPM0 SDK)
      2. 2.1.2 CubeIDE vs Code Composer Studio IDE (CCS)
      3. 2.1.3 CubeMX vs SysConfig
    2. 2.2 Hardware Ecosystem
    3. 2.3 Debug Tools
    4. 2.4 Migration Process
    5. 2.5 Migration and Porting Example
  5. 3Core Architecture Comparison
    1. 3.1 CPU
    2. 3.2 Embedded Memory Comparison
      1. 3.2.1 Flash Features
      2. 3.2.2 Flash Organization
      3. 3.2.3 Embedded SRAM
    3. 3.3 Power Up and Reset Summary and Comparison
    4. 3.4 Clocks Summary and Comparison
    5. 3.5 MSPM0 Operating Modes Summary and Comparison
    6. 3.6 Interrupt and Events Comparison
    7. 3.7 Debug and Programming Comparison
  6. 4Digital Peripheral Comparison
    1. 4.1 General-Purpose I/O (GPIO, IOMUX)
    2. 4.2 Universal Asynchronous Receiver-Transmitter (UART)
    3. 4.3 Serial Peripheral Interface (SPI)
    4. 4.4 I2C
    5. 4.5 Timers (TIMGx, TIMAx)
    6. 4.6 Windowed Watchdog Timer (WWDT)
    7. 4.7 Real-Time Clock (RTC)
  7. 5Analog Peripheral Comparison
    1. 5.1 Analog-to-Digital Converter (ADC)
    2. 5.2 Comparator (COMP)
    3. 5.3 Digital-to-Analog Converter (DAC)
    4. 5.4 Operational Amplifier (OPA)
    5. 5.5 Voltage References (VREF)
  8. 6Revision History

4.1 General-Purpose I/O (GPIO, IOMUX)

MSPM0 GPIO functionality covers virtually all the features provided by STM32G0 GPIO. STM32G0 uses the term GPIO to refer to all the functionality responsible for managing the device pins. However, MSPM0 uses a slightly different nomenclature, namely:

  • MSPM0 GPIO refers to the hardware capable of reading and writing IO, generating interrupts, etc.

  • MSPM0 IOMUX refers to the hardware responsible for connecting different internal digital peripherals to a pin. IOMUX services many different digital peripherals including, but not limited to, GPIO.

Together MSPM0 GPIO and IOMUX cover the same functionality as STM32G0 GPIO. Additionally, MSPM0 offers functionality not available in STM32G0 devices such as DMA connectivity, controllable input filtering and event capabilities.

Table 4-1 GPIO Feature Comparison
FeatureSTM32G0MSPM0G and MSPM0L
Output modes

Push-pull

Open drain with pullup or pulldown

Equivalent
GPIO speed selectionSpeed selection for each I/O

Similar

MSPM0 offers Standard IO (SDIO) on all IO pins. SDIO is comparable or better than STM GPIO speed=01.

MSPM0 High-Speed IO (HSIO) is available on select pins. HSIO is comparable to STM GPIO speed=10.

High-drive GPIOApproximately 20 mAEquivalent, called High Drive IO (HDIO)
Input modes

Floating

Pullup or pulldown

Analog

Equivalent
Atomic bit set and resetYesEquivalent
GPIO lockingRegister locking mechanismNo MSPM0 equivalent
Alternate functionsSelection register

Equivalent

MSPM0 uses IOMUX

Fast toggleCan change every two clocksEquivalent, MSPM0 can toggle pins every clock cycle
Wake-upGPIO pin state changeEquivalent
GPIO controlled by DMANoOnly available on MSPM0
User controlled input filtering to reject glitches less than 1, 3, or 8 ULPCLK periodsNoOnly available on MSPM0
User controllable input hysteresisNoOnly available on MSPM0

GPIO code examples

Information about GPIO code examples can be found in the MSPM0 SDK examples guide.