SLAZ184P October   2012  – May 2021 MSP430F249 , MSP430F249-EP

 

  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.      PM64
      2.      RGC64
    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  COMP2
    6. 6.6  CPU19
    7. 6.7  FLASH19
    8. 6.8  FLASH24
    9. 6.9  FLASH25
    10. 6.10 FLASH27
    11. 6.11 FLASH36
    12. 6.12 JTAG23
    13. 6.13 PORT11
    14. 6.14 PORT12
    15. 6.15 TA12
    16. 6.16 TA16
    17. 6.17 TA21
    18. 6.18 TAB22
    19. 6.19 TB2
    20. 6.20 TB16
    21. 6.21 TB24
    22. 6.22 USCI20
    23. 6.23 USCI21
    24. 6.24 USCI22
    25. 6.25 USCI23
    26. 6.26 USCI24
    27. 6.27 USCI25
    28. 6.28 USCI26
    29. 6.29 USCI28
    30. 6.30 USCI30
    31. 6.31 USCI34
    32. 6.32 USCI35
    33. 6.33 USCI40
    34. 6.34 XOSC5
    35. 6.35 XOSC6
    36. 6.36 XOSC8
  7. 7Revision History

6.5 COMP2

COMP Module

Category

Functional

Function

Configuring the port disable register (CAPD)

Description

According to the user's guide, each bit in the CAPD register should correspond with its associated port I/O number. For example, when "bit 0" of CAPD is set, the port disable function of pin Px.0 is enabled; "bit 1" controls Px.1, and so on (where Px is the port that contains the comparator inputs). However, on this device, the bits of the CAPD register correspond with the Comparator_A input number. For example, "bit 0" of CAPD controls the CA0 input, "bit 1" controls CA1, etc. This difference matters when the port I/O number is not the same as the comparator input number.

If the wrong CAPD bit is set, the port I/O function for the wrong pin will be disabled. Also, the analog signal applied to the comparator input pin being used may cause a parasitic current to flow from Vcc to GND. See the Comparator_A+ chapter of the MSP430x2xx Family User's Guide (SLAU144) for more information on CAPD.

Workaround

None