SLAZ178T October   2012  – May 2021 MSP430F2418

 

  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.      ZQW113
      2.      PM64
      3.      PN80
      4.      ZCA113
    3. 5.3 Memory-Mapped Hardware Revision (TLV Structure)
  6. 6Advisory Descriptions
    1. 6.1  ADC25
    2. 6.2  BCL12
    3. 6.3  BCL13
    4. 6.4  BCL15
    5. 6.5  CPU8
    6. 6.6  CPU16
    7. 6.7  CPU19
    8. 6.8  FLASH19
    9. 6.9  FLASH24
    10. 6.10 FLASH25
    11. 6.11 FLASH27
    12. 6.12 FLASH36
    13. 6.13 JTAG23
    14. 6.14 PORT10
    15. 6.15 PORT12
    16. 6.16 TA12
    17. 6.17 TA16
    18. 6.18 TA21
    19. 6.19 TAB22
    20. 6.20 TB2
    21. 6.21 TB16
    22. 6.22 TB24
    23. 6.23 USCI20
    24. 6.24 USCI21
    25. 6.25 USCI22
    26. 6.26 USCI23
    27. 6.27 USCI24
    28. 6.28 USCI25
    29. 6.29 USCI26
    30. 6.30 USCI27
    31. 6.31 USCI30
    32. 6.32 USCI34
    33. 6.33 USCI35
    34. 6.34 USCI40
    35. 6.35 XOSC5
    36. 6.36 XOSC8
  7. 7Revision History

6.20 TB2

TB Module

Category

Functional

Function

Interrupt is lost (slow ACLK)

Description

Timer_B counter is running with slow clock (external TBCLK or ACLK) compared to MCLK. The compare mode is selected for the capture/compare channel and the CCRx register is incremented by 1 with the occurring compare interrupt (if TBR = CCRx).
Due to the fast MCLK, the CCRx register increment (CCRx = CCRx + 1) happens before the Timer_B counter has incremented again. Therefore, the next compare interrupt should happen at once with the next Timer_B counter increment (if TBR = CCRx + 1). This interrupt is lost.

Workaround

Switch capture/compare mode to capture mode before the CCRx register increment. Switch back to compare mode afterward.