SLAZ504AC January   2013  – May 2021 MSP430F67491

 

  1. 1Functional Advisories
  2. 2Preprogrammed Software Advisories
  3. 3Debug Only Advisories
  4. 4Fixed by Compiler Advisories
  5. 5Nomenclature, Package Symbolization, and Revision Identification
    1. 5.1 Device Nomenclature
    2. 5.2 Package Markings
      1.      PEU128
      2.      PZ100
    3. 5.3 Memory-Mapped Hardware Revision (TLV Structure)
  6. 6Advisory Descriptions
    1. 6.1  ADC39
    2. 6.2  ADC42
    3. 6.3  ADC69
    4. 6.4  AUXPMM1
    5. 6.5  AUXPMM2
    6. 6.6  BSL7
    7. 6.7  BSL14
    8. 6.8  COMP10
    9. 6.9  CPU21
    10. 6.10 CPU22
    11. 6.11 CPU36
    12. 6.12 CPU37
    13. 6.13 CPU40
    14. 6.14 CPU46
    15. 6.15 CPU47
    16. 6.16 DMA4
    17. 6.17 DMA7
    18. 6.18 DMA9
    19. 6.19 DMA10
    20. 6.20 EEM17
    21. 6.21 EEM19
    22. 6.22 EEM23
    23. 6.23 JTAG26
    24. 6.24 JTAG27
    25. 6.25 LCDB6
    26. 6.26 PMM11
    27. 6.27 PMM12
    28. 6.28 PMM14
    29. 6.29 PMM15
    30. 6.30 PMM18
    31. 6.31 PMM20
    32. 6.32 PMM26
    33. 6.33 PORT15
    34. 6.34 PORT19
    35. 6.35 PORT26
    36. 6.36 RTC8
    37. 6.37 SD3
    38. 6.38 SYS16
    39. 6.39 UCS11
    40. 6.40 USCI36
    41. 6.41 USCI37
    42. 6.42 USCI41
    43. 6.43 USCI42
    44. 6.44 USCI47
    45. 6.45 USCI50
  7. 7Revision History

PMM11

PMM Module

Category

Functional

Function

MCLK comes up fast on exit from LPM3 and LPM4

Description

The DCO exceeds the programmed frequency of operation on exit from LPM3 and LPM4 for up to 6 us. This behavior is masked from affecting code execution by default: SVSL and SVML run in normal-performance mode and mask CPU execution for 150 us on wakeup from LPM3 and LPM4. However ,when the low-side SVS and the SVM are disabled or are operating in full-performance mode (SVMLE= 0 and SVSLE= 0, or SVMLFP= 1 and SVSLFP= 1) AND MCLK is sourced from the internal DCO running over 4 MHz, 7 MHz,11 MHz,or 14 MHz at core voltage levels 0, 1, 2, and 3, respectively, the mask lasts only 2 us. MCLK is, therefore, susceptible to run out of spec for 4 us.

Workaround

Set the MCLK divide bits in the Unified Clock System Control 5 Register (UCSCTL5) to divide MCLK by two prior to entering LPM3 or LPM4 (set DIVMx= 001). This prevents MCLK from running out of spec when the CPU wakes from the low-power mode. Following the wakeup fromthe low-power mode, wait 32, 48, 80, or 100 cycles for core voltage levels 0, 1, 2, and 3, respectively, before resetting DIVM xto zero and running MCLK at full speed [for example, __delay_cycles(100)]