SLAZ169O October   2012  – May 2021 MSP430F2274 , MSP430F2274-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.      DA38
      2.      RHA40
      3.      YFF49
    3. 5.3 Memory-Mapped Hardware Revision (TLV Structure)
  6. 6Advisory Descriptions
    1. 6.1  BCL12
    2. 6.2  BCL13
    3. 6.3  BCL16
    4. 6.4  CPU14
    5. 6.5  CPU19
    6. 6.6  CPU45
    7. 6.7  EEM20
    8. 6.8  FLASH21
    9. 6.9  FLASH22
    10. 6.10 FLASH24
    11. 6.11 FLASH26
    12. 6.12 FLASH27
    13. 6.13 FLASH36
    14. 6.14 JTAG13
    15. 6.15 JTAG14
    16. 6.16 PORT10
    17. 6.17 SYS15
    18. 6.18 TA12
    19. 6.19 TA16
    20. 6.20 TA21
    21. 6.21 TAB22
    22. 6.22 TB2
    23. 6.23 TB16
    24. 6.24 TB24
    25. 6.25 USCI16
    26. 6.26 USCI20
    27. 6.27 USCI21
    28. 6.28 USCI22
    29. 6.29 USCI23
    30. 6.30 USCI24
    31. 6.31 USCI25
    32. 6.32 USCI26
    33. 6.33 USCI27
    34. 6.34 USCI30
    35. 6.35 USCI34
    36. 6.36 USCI35
    37. 6.37 USCI40
    38. 6.38 XOSC5
    39. 6.39 XOSC8
  7. 7Revision History

6.15 JTAG14

JTAG Module

Category

Debug

Function

Releasing JTAG control can corrupt CPU registers during debug

Description

During a debug session, on rare occasions, the CPU register contents can get corrupted when JTAG control is released by the debugger. This behavior is exhibited during, but not limited to, the use of the "Use Virtual Breakpoints" and "Force Single Stepping" features in the IAR Embedded Workbench software. This bug does not affect normal device and application operation, such as starting a device out of POR and executing application code.

In order for the bug to occur, both of the following two conditions must be true:
1.- The CPU (MCLK) is sourced by the DCO.
2.- The "External Resistor (Rosc)" feature of the DCO is not used.

Workaround

Use an external crystal or a digital high-speed clock source connected to the LFXT1 oscillator to source the CPU (MCLK) during a debug session. Alternatively, use the on-chip DCO in the  "External Resistor (Rosc)" configuration. Note that, in this case, an external resistor connected to the device Rosc pin is mandatory, and that the factory-programmed DCO calibration constants cannot be applied directly.