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SPRZ569 November 2024 F29H850TU , F29H859TU-Q1

1
TMS320F2838x MCUs Silicon Errata Silicon Revisions A, 0
1Usage Notes and Advisories Matrices
1. 1.1 Usage Notes Matrix
2. 1.2 Advisories Matrix
2Nomenclature, Package Symbolization, and Revision Identification
3Silicon Revision 0 Usage Notes and Advisories
1. 3.1 Silicon Revision 0 Usage Notes
2. 3.2 Silicon Revision 0 Advisories
  1. Advisory
  2. Advisory
  3. 3.2.1 Advisory
  4. Advisory
  5. 3.2.2 Advisory
  6. Advisory
  7. Advisory
  8. Advisory
  9. Advisory
  10. Advisory
  11. 3.2.3 Advisory
  12. 3.2.4 Advisory
  13. 3.2.5 Advisory
  14. 3.2.6 Advisory
4Documentation Support
5Trademarks
6Revision History

3.2.4 Advisory

System: Device Reset Remains Asserted When VDD Voltage Ramps Before VDDIO

Revisions Affected

Details

The device XRSn reset signal can remain in a low (reset asserted) state when the VDD supply voltage is ramped up before or simultaneously with the VDDIO supply. As a result, the device fails to boot, and draws a large current on the VDD supply.

F29H859TU-Q1 F29H850TU Incorrect Power-up Sequence Leading to Stuck Reset

Figure 3-3 Incorrect Power-up Sequence Leading to Stuck Reset

Workaround

Ensure the VDDIO supply is fully ramped up at least 1ms before ramping up the VDD supply voltage.

F29H859TU-Q1 F29H850TU Correct Power-up Sequence With Reset Release

Figure 3-4 Correct Power-up Sequence With Reset Release