SWRZ149A July   2023  – August 2024 IWRL1432

PRODUCTION DATA  

  1.   1
  2. 1Introduction
  3. 2Device Nomenclature
  4. 3Device Markings
  5. 4Advisory to Silicon Variant / Revision Map
  6. 5Known Design Exceptions to Functional Specifications
    1. 5.1  ANA #51
    2. 5.2  ANA #52
    3. 5.3  DIG #1
    4. 5.4  DIG #2
    5. 5.5  DIG #3
    6. 5.6  DIG #4
    7. 5.7  DIG #5
    8. 5.8  DIG #6
    9. 5.9  DIG #7
    10. 5.10 DIG #8
    11. 5.11 DIG #9
    12. 5.12 DIG #10
    13. 5.13 DIG #14
    14. 5.14 DIG #15
    15. 5.15 DIG #16
  7. 6Trademarks
  8.   Revision History

5.2 ANA #52

Slicer LDO Test LOAD (TLOAD) not disabled after startup

Revisions Affected

IWRL1432 ES1.1

Details

By default, the slicer LDO TLOAD is enabled during startup for stability purposes. After the oscillator is enabled, the current loading should be disabled automatically to reduce power and extend reliability.

Since presently the loading is not turned OFF automatically, higher than expected current is observed (~8mA).

Workaround

It is recommended to disable the load bit explicitly by setting the following field to save unnecessary power burnout :

TOP_PRCM: CLK_CTRL_REG1_LDO_CLKTOP = 0x1

This has been fixed in ES2.0