SLAZ763 July   2025 MSPM0H3216

 

  1.   1
  2.   Abstract
  3. 1Functional Advisories
  4. 2Preprogrammed Software Advisories
  5. 3Debug Only Advisories
  6. 4Fixed by Compiler Advisories
  7. 5Device Nomenclature
    1. 5.1 Device Symbolization and Revision Identification
  8. 6Advisory Descriptions
    1. 6.1  ADC_ERR_05
    2. 6.2  CPU_ERR_02
    3. 6.3  CPU_ERR_03
    4. 6.4  FLASH_ERR_02
    5. 6.5  FLASH_ERR_03
    6. 6.6  I2C_ERR_04
    7. 6.7  I2C_ERR_05
    8. 6.8  I2C_ERR_06
    9. 6.9  I2C_ERR_07
    10. 6.10 I2C_ERR_08
    11. 6.11 I2C_ERR_09
    12. 6.12 I2C_ERR_10
    13. 6.13 LFXT_ERR_03
    14. 6.14 LFXT_ERR_04
    15. 6.15 PMCU_ERR_13
    16. 6.16 RST_ERR_01
    17. 6.17 SPI_ERR_04
    18. 6.18 SPI_ERR_05
    19. 6.19 SPI_ERR_06
    20. 6.20 SPI_ERR_07
    21. 6.21 SWD_ERR_01
    22. 6.22 SYSOSC_ERR_02
    23. 6.23 TIMER_ERR_04
    24. 6.24 TIMER_ERR_06
    25. 6.25 UART_ERR_01
    26. 6.26 UART_ERR_02
    27. 6.27 UART_ERR_04
    28. 6.28 UART_ERR_05
    29. 6.29 UART_ERR_06
    30. 6.30 UART_ERR_07
    31. 6.31 UART_ERR_08
  9. 7Trademarks
  10. 8Revision History

6.22 SYSOSC_ERR_02

SYSOSC Module

Category

Functional

Function

MFCLK does not work when Async clock request is received in an LPM where SYSOSC was disabled in FCL mode

Description

MFCLK will not start to toggle in below scenario:
1. FCL mode is enabled and then MFCLK is enabled
2. Enter a low power mode where SYSOSC is disabled (SLEEP2/STOP2/STANDBY0/STANDBY1).
3. Async requst is received from some peripherals which use MFCLK as functional clock.
On receiving async request, SYSOSC gets enabled and ulpclk becomes 32MHz. But MFCLK is gated off and it does not toggle at all as the device is still set to the LPM.

Workaround

If SYSOSC is using the FCL mode - Do not enable the MFCLK for a peripheral when you're entering a LPM mode which would typically turn off the SYSOSC.