SLAZ594V January   2014  – May 2021 MSP430F67771A

 

  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  AUXPMM2
    5. 6.5  BSL7
    6. 6.6  BSL14
    7. 6.7  COMP10
    8. 6.8  CPU21
    9. 6.9  CPU22
    10. 6.10 CPU36
    11. 6.11 CPU37
    12. 6.12 CPU40
    13. 6.13 CPU46
    14. 6.14 CPU47
    15. 6.15 DMA4
    16. 6.16 DMA7
    17. 6.17 DMA9
    18. 6.18 DMA10
    19. 6.19 EEM17
    20. 6.20 EEM19
    21. 6.21 EEM23
    22. 6.22 JTAG26
    23. 6.23 JTAG27
    24. 6.24 LCDB6
    25. 6.25 PMM11
    26. 6.26 PMM12
    27. 6.27 PMM14
    28. 6.28 PMM15
    29. 6.29 PMM18
    30. 6.30 PMM20
    31. 6.31 PMM26
    32. 6.32 PORT15
    33. 6.33 PORT19
    34. 6.34 PORT26
    35. 6.35 SD3
    36. 6.36 SYS16
    37. 6.37 UCS11
    38. 6.38 USCI36
    39. 6.39 USCI37
    40. 6.40 USCI41
    41. 6.41 USCI42
    42. 6.42 USCI47
    43. 6.43 USCI50
  7. 7Revision History

PMM26

PMM Module

Category

Functional

Function

Device lock-up if RST pin pulled low during write to SVSMHCTL or SVSMLCTL

Description

Device results in lock-up condition under one of the two scenarios below:

1) If RST pin is pulled low during write access to SVSMHCTL, with the RST/NMI pin is configured to reset function and is pulled low (reset event) the device will stop code execution and is continuously held in reset state. RST pin is no longer functional. The only way to come out of the lock-up situation is a power cycle.  

OR

2) If RST pin is pulled low during write access to SVSMLCTL and only if the code that checks for SVSMLDLYIFG==1 is implemented without a timeout. The device will be stuck in the polling loop polling since SVSMLDLYIFG will never be cleared.

Workaround

Follow the sequence below to prevent the lock-up for both use cases:
1) Disable RST pin reset function and switch to NMI before access SVSMHCTL or SVSMLCTL.
then
2) Activate NMI interrupt and handle reset events in this time by SW (optional if reset functionality required during access SVSMHCTL or SVSMLCTL)
then
3) Enable RST pin reset function after access to SVSMHCTL or SVSMLCTL

To prevent lock-up caused by use case #2 a timeout for the SVSMLDLYIFG flag check should be implemented to 300us.