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SPRZ362F November 2012 – October 2021 TMS320F28050 , TMS320F28051 , TMS320F28052 , TMS320F28052-Q1 , TMS320F28052F , TMS320F28052F-Q1 , TMS320F28052M , TMS320F28052M-Q1 , TMS320F28053 , TMS320F28054 , TMS320F28054-Q1 , TMS320F28054F , TMS320F28054F-Q1 , TMS320F28054M , TMS320F28054M-Q1 , TMS320F28055

1Usage Notes and Advisories Matrices
1. 1.1 Usage Notes Matrix
2. 1.2 Advisories Matrix
2Nomenclature, Package Symbolization, and Revision Identification
3Silicon Revision A Usage Notes and Advisories
1. 3.1 Silicon Revision A Usage Notes
  1. 3.1.1 PIE: Spurious Nested Interrupt After Back-to-Back PIEACK Write and Manual CPU Interrupt Mask Clear Usage Note
  2. 3.1.2 CAN Bootloader: Internal Oscillator Tolerance is Not Sufficient for CAN Operation at High Temperatures
2. 3.2 Silicon Revision A Advisories
  1. Advisory
  2. Advisory
  3. Advisory
  4. Advisory
  5. Advisory
  6. Advisory
  7. Advisory
  8. Advisory
  9. Advisory
  10. Advisory
  11. Advisory
  12. Advisory
  13. Advisory
  14. Advisory
  15. Advisory
  16. Advisory
4Silicon Revision 0 Usage Notes and Advisories
1. 4.1 Silicon Revision 0 Usage Notes
2. 4.2 Silicon Revision 0 Advisories
5Documentation Support
6Trademarks
7Revision History

Advisory

ADC: Offset Self-Recalibration Requirement

Revision(s) Affected

0, A

Details

The factory offset calibration from Device_cal() may not ensure that the ADC offset remains within specifications under all operating conditions in the customer's system.

Workaround(s)

To ensure that the offset remains within the data sheet's “single recalibration” specifications, perform the AdcOffsetSelfCal() function after Device_cal() has completed and the ADC has been configured.
To ensure that the offset remains within the data sheet's “periodic recalibration” specifications, perform the AdcOffsetSelfCal() function periodically with respect to temperature drift.

For more details on AdcOffsetSelfCal(), refer to the ADC Zero Offset Calibration section in the "Analog-to-Digital Converter and Comparator" chapter of the TMS320x2805x Real-Time Microcontrollers Technical Reference Manual.