SLAA419C October   2009  – April 2019 MSP430F5418 , MSP430F5418A , MSP430F5419 , MSP430F5419A , MSP430F5435 , MSP430F5435A , MSP430F5436 , MSP430F5436A , MSP430F5437 , MSP430F5437A , MSP430F5438 , MSP430F5438A

 

  1.   Migrating From MSP430F541x and MSP430F543x MCUs to MSP430F541xA and MSP430F543xA MCUs
    1.     Trademarks
    2. 1 Device Comparison
    3. 2 Hardware Considerations
      1. 2.1 PMM Settings and Low Power Consumption
      2. 2.2 Operating Frequency vs Supply Voltage
      3. 2.3 Internal Voltage Reference
      4. 2.4 Unified Clock System (UCS) Settings
      5. 2.5 Cyclic Redundancy Check Module
      6. 2.6 Device Errata
    4. 3 Firmware Considerations
      1. 3.1 PMM Default States
        1. 3.1.1 PMM Defaults for F543x
          1. 3.1.1.1 Power Management Module Control Register 0 (PMMCTL0)
          2. 3.1.1.2 Supply Voltage Supervisor and Monitor High-Side Control Register (SVSMHCTL)
          3. 3.1.1.3 Supply Voltage Supervisor and Monitor Low-Side Control Register (SVSMLCTL)
          4. 3.1.1.4 Power Management Module Reset and Interrupt Enable Register (PMMRIE)
        2. 3.1.2 PMM Defaults for F543xA
      2. 3.2 Internal Voltage Reference
        1. 3.2.1 ADC12 Temperature Sensor Equation
      3. 3.3 Bootloader (BSL)
    5. 4 References
  2.   Revision History

3.1.2 PMM Defaults for F543xA

The PMM levels on the F543xA are all set to the default levels specified in the user's guide. This has an important implication on the application. The default PMMCOREVx level of 0, for example, limits the maximum DCO speed to 8 MHz. To operate at higher frequencies, the application must first increase the VCORE voltage and the respective SVS and SVM settings during initialization procedures.

NOTE

The procedure to increment the PMMCOREVx and SVS/SVM levels requires specific steps, documented in the PMM chapter of the MSP430F5xx and MSP430F6xx Family User's Guide. The files msp430x54xA_PMM.h and msp430x54xA_PMM.c in the MSP430F543xA code examples implement this procedure in the SetVCore(level) function. This function should be used to increment or decrement the PMMCOREVx levels.