SLAZ153I October   2012  – May 2021 MSP430F2003

 

  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.      PW14
      2.      N14
      3.      RSA16
    3. 5.3 Memory-Mapped Hardware Revision (TLV Structure)
  6. 6Advisory Descriptions
    1. 6.1  BCL9
    2. 6.2  BCL10
    3. 6.3  BCL11
    4. 6.4  BCL12
    5. 6.5  BCL13
    6. 6.6  BCL14
    7. 6.7  CPU4
    8. 6.8  EEM20
    9. 6.9  FLASH16
    10. 6.10 FLASH22
    11. 6.11 PORT10
    12. 6.12 SDA2
    13. 6.13 SDA3
    14. 6.14 SYS15
    15. 6.15 TA12
    16. 6.16 TA16
    17. 6.17 TA17
    18. 6.18 TA21
    19. 6.19 TAB22
    20. 6.20 USI1
    21. 6.21 USI2
    22. 6.22 USI3
    23. 6.23 USI4
    24. 6.24 USI5
    25. 6.25 XOSC5
    26. 6.26 XOSC8
  7. 7Revision History

6.15 TA12

TA Module

Category

Functional

Function

Interrupt is lost (slow ACLK)

Description

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

Workaround

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