SLAZ220P October   2012  – May 2021 MSP430F46171

 

  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.      PZ100
    3. 5.3 Memory-Mapped Hardware Revision (TLV Structure)
  6. 6Advisory Descriptions
    1. 6.1  CPU8
    2. 6.2  CPU16
    3. 6.3  CPU19
    4. 6.4  DMA3
    5. 6.5  DMA4
    6. 6.6  FLL3
    7. 6.7  FLL6
    8. 6.8  LCDA5
    9. 6.9  LCDA7
    10. 6.10 RTC1
    11. 6.11 TA12
    12. 6.12 TA16
    13. 6.13 TA18
    14. 6.14 TA21
    15. 6.15 TAB22
    16. 6.16 TB2
    17. 6.17 TB16
    18. 6.18 TB18
    19. 6.19 TB24
    20. 6.20 USCI16
    21. 6.21 USCI19
    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 USCI27
    30. 6.30 USCI30
    31. 6.31 USCI34
    32. 6.32 USCI35
    33. 6.33 USCI40
    34. 6.34 WDG2
    35. 6.35 XOSC5
    36. 6.36 XOSC8
    37. 6.37 XOSC9
  7. 7Revision History

6.10 RTC1

RTC Module

Category

Functional

Function

Incorrect RTCDAY count in BCD mode

Description

When using the RTC in BCD mode, RTCDAY will count from 0x29 to 0x31 instead of counting to 0x30 in the month of December (RTCMON=0x12). Furthermore, due to a malfunction in the leap year detection logic, RTCMON/RTCDAY may incorrectly count from 0x02/0x28 to 0x03/0x01 instead of 0x02/0x29, or it may incorrectly count from 0x02/0x28 to 0x02/0x29 instead of 0x03/0x01.

Workaround

Do not operate the RTC module in BCD mode. Use the RTC in hexadecimal format mode (RTCBCD = 0) instead. Convert RTC registers to BCD on demand using software.

NOTE: The CPU instruction DADD.B/.W can be used to efficiently implement a hex to BCD conversion. An Assembly language example of such an optimized 8-bit conversion is shown below:

        mov.b     #8,R14      // Loop counter, process 8 bits
        clr.b     R12         // Result will get assembled in R12
loop    rlc.b     R13         // Get MSB from input variable in R13
        dadd.b    R12,R12
        dec.b     R14
        jnz       loop