SLAZ096Z October   2012  – May 2021 CC430F5145

 

  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.      RGZ48
    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  AES1
    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 CPU40
    12. 6.12 CPU46
    13. 6.13 CPU47
    14. 6.14 DMA4
    15. 6.15 DMA7
    16. 6.16 DMA10
    17. 6.17 EEM17
    18. 6.18 EEM19
    19. 6.19 EEM23
    20. 6.20 JTAG26
    21. 6.21 JTAG27
    22. 6.22 PMM11
    23. 6.23 PMM12
    24. 6.24 PMM14
    25. 6.25 PMM15
    26. 6.26 PMM18
    27. 6.27 PMM20
    28. 6.28 PMM26
    29. 6.29 PORT15
    30. 6.30 PORT19
    31. 6.31 PORT29
    32. 6.32 RF1A1
    33. 6.33 RF1A2
    34. 6.34 RF1A3
    35. 6.35 RF1A5
    36. 6.36 RF1A6
    37. 6.37 RF1A8
    38. 6.38 SYS12
    39. 6.39 SYS16
    40. 6.40 UCS11
    41. 6.41 USCI26
    42. 6.42 USCI30
    43. 6.43 USCI34
    44. 6.44 USCI35
    45. 6.45 USCI39
    46. 6.46 USCI40
  7. 7Revision History

UCS11

UCS Module

Category

Functional

Function

Modifying UCSCTL4 clock control register triggers an additional erroneous clock request

Description

Changing the SELM/SELS/SELA bits in the UCSCTL4 register will correctly configure the respective clock to use the intended clock source but might also erroneously set XT1/XT2 fault flag if the crystals are not present at XT1/XT2 or not configured in the application firmware. If the NMI interrupt for the OFIFG is enabled, an unintentional NMI interrupt will be triggered and needs to be handled.

Note: The XT1/XT2 fault flag can be set regardless of which SELM/SELS/SELA bit combinations are being changed.

Workaround

Clear all the fault flags in UCSCTL7 register once after changing any of the SELM/SELS/SELA bits in the UCSCTL4 register.
If OFIFG-NMI is enabled during clock switching, disable OFIFG-NMI interrupt  during changing the SELM/SELS/SELA bits in the UCSCTL4 register to prevent unintended NMI.
Alternatively it can be handled accordingly (clear falsely set fault flags) in the Interrupt Service Routine to ensure proper OFIFG clearing.