SLAZ248Z October   2012  – May 2021 MSP430F5151

 

  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.      DA38
      2.      RSB40
      3.      YFF40
    3. 5.3 Memory-Mapped Hardware Revision (TLV Structure)
  6. 6Advisory Descriptions
    1. 6.1  BSL7
    2. 6.2  COMP10
    3. 6.3  CPU21
    4. 6.4  CPU22
    5. 6.5  CPU40
    6. 6.6  CPU46
    7. 6.7  CPU47
    8. 6.8  DMA4
    9. 6.9  DMA7
    10. 6.10 DMA10
    11. 6.11 EEM11
    12. 6.12 EEM17
    13. 6.13 EEM19
    14. 6.14 EEM21
    15. 6.15 EEM23
    16. 6.16 JTAG26
    17. 6.17 JTAG27
    18. 6.18 PMAP1
    19. 6.19 PMM14
    20. 6.20 PMM15
    21. 6.21 PMM18
    22. 6.22 PMM20
    23. 6.23 PMM26
    24. 6.24 PORT15
    25. 6.25 PORT19
    26. 6.26 PORT21
    27. 6.27 SYS12
    28. 6.28 SYS16
    29. 6.29 TD1
    30. 6.30 TD2
    31. 6.31 UCS9
    32. 6.32 UCS11
    33. 6.33 USCI26
    34. 6.34 USCI31
    35. 6.35 USCI34
    36. 6.36 USCI35
    37. 6.37 USCI39
    38. 6.38 USCI40
  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.