SLAZ753C October   2025  – November 2025 MSPM0C1103 , MSPM0C1103-Q1 , MSPM0C1104 , MSPM0C1104-Q1

 

  1.   1
  2.   Abstract
  3. 1Functional Advisories
  4. 2Preprogrammed Software Advisories
  5. 3Debug Only Advisories
  6. 4Device Nomenclature
    1. 4.1 Device Symbolization and Revision Identification
  7. 5Advisory Descriptions
    1. 5.1  Fixed by Compiler Advisories
    2. 5.2  ADC_ERR_05
    3. 5.3  CPU_ERR_01
    4. 5.4  CPU_ERR_02
    5. 5.5  CPU_ERR_03
    6. 5.6  FLASH_ERR_04
    7. 5.7  FLASH_ERR_05
    8. 5.8  FLASH_ERR_06
    9. 5.9  FLASH_ERR_08
    10. 5.10 GPIO_ERR_03
    11. 5.11 GPIO_ERR_04
    12. 5.12 I2C_ERR_03
    13. 5.13 I2C_ERR_04
    14. 5.14 I2C_ERR_05
    15. 5.15 I2C_ERR_06
    16. 5.16 I2C_ERR_07
    17. 5.17 I2C_ERR_08
    18. 5.18 I2C_ERR_09
    19. 5.19 I2C_ERR_10
    20. 5.20 I2C_ERR_13
    21. 5.21 RST_ERR_01
    22. 5.22 SPI_ERR_03
    23. 5.23 SPI_ERR_04
    24. 5.24 SPI_ERR_05
    25. 5.25 SPI_ERR_06
    26. 5.26 SPI_ERR_07
    27. 5.27 SYSCTL_ERR_03
    28. 5.28 SYSOSC_ERR_02
    29. 5.29 TIMER_ERR_01
    30. 5.30 TIMER_ERR_04
    31. 5.31 TIMER_ERR_06
    32. 5.32 TIMER_ERR_07
    33. 5.33 UART_ERR_01
    34. 5.34 UART_ERR_02
    35. 5.35 UART_ERR_04
    36. 5.36 UART_ERR_05
    37. 5.37 UART_ERR_06
    38. 5.38 UART_ERR_07
    39. 5.39 UART_ERR_08
    40. 5.40 UART_ERR_09
    41. 5.41 UART_ERR_10
    42. 5.42 UART_ERR_11
  8. 6Revision History

5.5 CPU_ERR_03

CPU Module

Category

Functional

Function

Prefetcher can fetch wrong instructions when transitioning into Low power modes

Description

When transitioning into low power modes and there is a pending prefetch, the prefetcher can erroneously fetch incorrect data (all 0's). When the device wakes up, if the prefetcher and cache do not get overwritten by ISR code, then the main code execution from flash can get corrupted. For example, if the ISR is in the SRAM, then the incorrect data that was prefetched from Flash does not get overwritten. When the ISR returns the corrupted data in the prefetcher can be fetched by the CPU resulting in incorrect instructions. A HW Event wake is another example of a process that will wake the device, but not flush the prefetcher.

Workaround

Disable prefetcher before entering low power modes.

Example:
CPUSS.CTL.PREFETCH = 0x0; // disables prefetcher
SYSCTL.SOCLOCK.SHUTDNSTORE0  // Read from SHUTDOWN Memory
__WFI(); // or __WFE(); this function calls the transition into low power mode
CPUSS.CTL.PREFETCH = 0x1; // enables prefetcher