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

6.6 CPU45

CPU Module

Category

Functional

Function

CPU speed performance limitation

Description

The CPU register contents may become unpredictable during CPU register operations if the device operates at minimum Vcc required for system speed performance above 4.15MHz under certain conditions. This is dependent on voltage and CPU clock (MCLK) frequency and duty-cycle.

Workaround

With respect to the system speed performance above 4.15MHz versus minimum required Vcc

1.            Increase Vcc by 200mV for DCO calibrated frequencies when sourced to MCLK
                OR
2.            Use internally divided clock for MCLK (BCSCTL2.DIVMx > 00)
                OR
3.            Use external clock with 50% positive duty cycle when sourced to MCLK
                OR
4.            Reduce LFXT1 (used in HF mode) or external clock frequency by 20% when sourced to MCLK
                OR
5.            Reduce DCO speed by 20% when DCO is sourced to MCLK