SDAA018 December   2025 MSPM0H3216

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 MSPM0H Hardware Design Check List
  5. 2 Power Supplies in MSPM0H Devices
    1. 2.1 Digital Power Supply
    2. 2.2 Analog Power Supply
    3. 2.3 Built-in Power Supply and Voltage Reference
    4. 2.4 Recommended Decoupling Circuit for Power Supply
  6. 3 Reset and Power Supply Supervisor
    1. 3.1 Digital Power Supply
    2. 3.2 Power Supply Supervisor
  7. 4 Clock System
    1. 4.1 Internal Oscillators
    2. 4.2 External Oscillators
    3. 4.3 External Clock Output (CLK_OUT)
    4. 4.4 Frequency Clock Counter (FCC)
  8. 5 Debugger
    1. 5.1 Debug Port Pins and Pinout
    2. 5.2 Debug Port Connection With Standard JTAG Connector
  9. 6 Key Analog Peripherals
    1. 6.1 ADC Design Considerations
  10. 7 Key Digital Peripherals
    1. 7.1 Timer Resources and Design Considerations
    2. 7.2 UART and LIN Resources and Design Considerations
    3. 7.3 I2C and SPI Design Considerations
  11. 8 GPIOs
    1. 8.1 GPIO Output Switching Speed and Load Capacitance
    2. 8.2 GPIO Current Sink and Source
    3. 8.3 High-Speed GPIOs (HSIO)
    4. 8.4 Communicate With a 1.8V/3.3V Device Without a Level Shifter
    5. 8.5 Unused Pins Connection
  12. 9 Layout Guides
    1. 9.1 Power Supply Layout
    2. 9.2 Considerations for Ground Layout
    3. 9.3 Traces, Vias, and Other PCB Components
    4. 9.4 How to Select Board Layers and Recommended Stack-up
  13. 10Summary
  14. 11References

4.1 Internal Oscillators

Internal Low-Frequency Oscillator (LFOSC)

LFOSC is an on-chip low power oscillator that is factory trimmed to a frequency of 32.768kHz. This provides a low-frequency clock that can be used to help the system achieve low power consumption. The LFOSC can provide higher accuracy when used over a reduced temperature range. See the device-specific data sheet for details.

MSPM0H Series LFOSC Figure 4-1 MSPM0H Series LFOSC

Internal System Oscillator (SYSOSC)

SYSOSC is an on-chip, accurate, and configurable oscillator with factory-trimmed frequencies of 32MHz (base frequency) and 4MHz (low frequency), as well as support for user-trimmed operation at either 24MHz or 16MHz. This provides a high frequency clock that allows the CPU to run at high speed for executing code and processing performance.

SYSOSC Frequency Correction Loop

The overall SYSOSC application accuracy is determined by whether the internal ROSC resistor is used and the temperature. The SYSOSC circuit error in FCL mode (±0.75% for -40°C to 85°C or ±0.90% for -40°C to 125°C).