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Usage Notes and Known Design Exceptions to Functional Specifications

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Advisory ADC: Offset Self-Recalibration Requirement

Revision(s) Affected 0, A, B

Details The factory offset calibration from Device_cal() may not ensure that each ADC's 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 AdcxOffsetSelfCal() 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 AdcxOffsetSelfCal() function periodically with respect to

temperature drift.

For more details on AdcxOffsetSelfCal(), refer to the “ADC Zero Offset Calibration”

section in the Analog Subsystem chapter of the Concerto F28M35x Technical Reference

Manual (SPRUH22).

F28M35x Concerto™ MCU Silicon Errata SPRZ357J–August 2011–Revised July 2014

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