23.4.7 Status and Control Register 3 (ADCx_SC3)The Status and Control Register 3 (SC3) controls the calibration, continuous convert, andhardware averaging functions of the ADC module.Address: 4003_B000h base + 24h offset = 4003_B024hBit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16R 0WReset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0R 0CALCALF0ADCOAVGEAVGSW w1cReset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0ADCx_SC3 field descriptionsField Description31–8ReservedThis field is reserved.This read-only field is reserved and always has the value 0.7CALCalibrationBegins the calibration sequence when set. This field stays set while the calibration is in progress and iscleared when the calibration sequence is completed. CALF must be checked to determine the result of thecalibration sequence. Once started, the calibration routine cannot be interrupted by writes to the ADCregisters or the results will be invalid and CALF will set. Setting CAL will abort any current conversion.6CALFCalibration Failed FlagDisplays the result of the calibration sequence. The calibration sequence will fail if SC2[ADTRG] = 1, anyADC register is written, or any stop mode is entered before the calibration sequence completes. Writing 1to CALF clears it.0 Calibration completed normally.1 Calibration failed. ADC accuracy specifications are not guaranteed.Table continues on the next page...Chapter 23 Analog-to-Digital Converter (ADC)KL27 Sub-Family Reference Manual , Rev. 5, 01/2016Freescale Semiconductor, Inc. 353
