SLASFJ6A July   2025  – September 2025 MSPM0C1105 , MSPM0C1106

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Functional Block Diagram
  6. 5 Device Comparison
  7. 6 Pin Configuration and Functions
    1. 6.1 Pin Diagrams
    2. 6.2 Pin Attributes
      1.      10
    3. 6.3 Signal Descriptions
      1.      12
      2.      13
      3.      14
      4.      15
      5.      16
      6.      17
      7.      18
      8.      19
      9.      20
      10.      21
      11.      22
      12.      23
    4. 6.4 Connections for Unused Pins
  8. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Supply Current Characteristics
      1. 7.5.1 RUN/SLEEP Modes
      2. 7.5.2 STOP/STANDBY Modes
      3. 7.5.3 SHUTDOWN Mode
    6. 7.6  Power Supply Sequencing
      1. 7.6.1 Power Supply Ramp
      2. 7.6.2 POR and BOR
    7. 7.7  Flash Memory Characteristics
    8. 7.8  Timing Characteristics
    9. 7.9  Clock Specifications
      1. 7.9.1 System Oscillator (SYSOSC)
      2. 7.9.2 Low Frequency Oscillator (LFOSC)
      3. 7.9.3 Low Frequency Crystal/Clock
      4. 7.9.4 High Frequency Crystal/Clock
    10. 7.10 Digital IO
      1. 7.10.1 Electrical Characteristics
      2. 7.10.2 Switching Characteristics
    11. 7.11 Analog Mux VBOOST
    12. 7.12 ADC
      1. 7.12.1 Electrical Characteristics
      2. 7.12.2 Switching Characteristics
      3. 7.12.3 Linearity Parameters
      4. 7.12.4 Typical Connection Diagram
    13. 7.13 Temperature Sensor
    14. 7.14 VREF
      1. 7.14.1 Electrical Characteristics
      2. 7.14.2 Voltage Characteristics
    15. 7.15 Comparator (COMP)
      1. 7.15.1 Comparator Electrical Characteristics
    16. 7.16 I2C
      1. 7.16.1 I2C Characteristics
      2. 7.16.2 I2C Filter
      3. 7.16.3 I2C Timing Diagram
    17. 7.17 SPI
      1. 7.17.1 SPI
      2. 7.17.2 SPI Timing Diagram
    18. 7.18 UART
    19. 7.19 TIMx
    20. 7.20 Emulation and Debug
      1. 7.20.1 SWD Timing
  9. 8 Detailed Description
    1. 8.1  Overview
    2. 8.2  CPU
    3. 8.3  Operating Modes
      1. 8.3.1 Functionality by Operating Mode
    4. 8.4  Power Management Unit (PMU)
    5. 8.5  Clock Module (CKM)
    6. 8.6  DMA_B
    7. 8.7  Events
    8. 8.8  Memory
      1. 8.8.1 Memory Organization
      2. 8.8.2 Peripheral File Map
      3. 8.8.3 Peripheral Interrupt Vector
    9. 8.9  Flash Memory
    10. 8.10 SRAM
    11. 8.11 GPIO
    12. 8.12 IOMUX
    13. 8.13 ADC
    14. 8.14 Temperature Sensor
    15. 8.15 Low-Frequency Sub System (LFSS)
    16. 8.16 VREF
    17. 8.17 COMP
    18. 8.18 Security
    19. 8.19 CRC
    20. 8.20 UART
    21. 8.21 I2C
    22. 8.22 SPI
    23. 8.23 IWDT
    24. 8.24 WWDT
    25. 8.25 RTC_B
    26. 8.26 Timers (TIMx)
    27. 8.27 Device Analog Connections
    28. 8.28 Input/Output Diagrams
    29. 8.29 Serial Wire Debug Interface
    30. 8.30 DEBUGSS
    31. 8.31 Device Factory Constants
    32. 8.32 Identification
  10. 9 Applications, Implementation, and Layout
    1. 9.1 Typical Application
      1. 9.1.1 Schematic
  11. 10Device and Documentation Support
    1. 10.1 Getting Started and Next Steps
    2. 10.2 Device Nomenclature
    3. 10.3 Tools and Software
    4. 10.4 Documentation Support
    5. 10.5 Support Resources
    6. 10.6 Trademarks
    7. 10.7 Electrostatic Discharge Caution
    8. 10.8 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

8.23 IWDT

The independent watchdog timer (IWDT) in the LFSS is a device-independent supervisor which monitors code execution and overall hang up scenarios of the device. Due to the nature of LFSS, this IWDT has its own system independent power and clock source. If the application software does not successfully reset the watchdog within the programmed time, the watchdog generates a POR reset to the device.

Key features of the IWDT include:

  • A 25-bit counter with closed and open window
  • Counter driven from LFOSC (fixed 32kHz clock path) with a programmable clock divider
  • Eight selectable watchdog timer periods

For more details, see the IWDT chapter of the MSPM0 C-Series Microcontrollers Technical Reference Manual.