Datasheet

ADuC7060/ADuC7061 Data Sheet
Rev. D | Page 42 of 108
Table 40. ADCSTA MMR Bit Designations
Bit Name Description
15 ADCCALSTA ADC calibration status.
This bit is set automatically in hardware to indicate that an ADC calibration cycle has been completed.
This bit is cleared after ADCMDE is written to.
14 Not used.
This bit is reserved for future functionality.
13 ADC1CERR Auxiliary ADC conversion error.
This bit is set automatically in hardware to indicate that an auxiliary ADC conversion overrange or underrange has
occurred. The conversion result is clamped to negative full scale (underrange error) or positive full scale (overrange
error) in this case.
This bit is cleared when a valid (in-range) voltage conversion result is written to the ADC1DAT register.
12 ADC0CERR Primary ADC conversion error.
This bit is set automatically in hardware to indicate that a primary ADC conversion overrange or underrange has
occurred. The conversion result is clamped to negative full scale (underrange error) or positive full scale (overrange
error) in this case.
This bit is cleared when a valid (in-range) conversion result is written to the ADC0DAT register.
11:7 Not used. These bits are reserved for future functionality and should not be monitored by user code.
6 ADC0ATHEX ADC0 accumulator comparator threshold exceeded.
This bit is set when the ADC0 accumulator value in ADC0ACC exceeds the threshold value programmed in the ADC0
comparator threshold register, ADC0ATH.
This bit is cleared when the value in ADC0ACC does not exceed the value in ADC0ATH.
5 Not used. This bit is reserved for future functionality and should not be monitored by user code.
4 ADC0THEX Primary channel ADC comparator threshold. This bit is valid only if the primary channel ADC comparator is enabled
via the ADCCFG MMR.
This bit is set by hardware if the absolute value of the primary ADC conversion result exceeds the value written in the
ADC0TH MMR. If the ADC threshold counter is used (ADC0RCR), this bit is set only when the specified number of
primary ADC conversions equals the value in the ADC0THV MMR.
Otherwise, this bit is cleared.
3 ADC0OVR Primary channel ADC overrange bit. If the overrange detect function is enabled via the ADCCFG MMR, this bit is set by
hardware if the primary ADC input is grossly (>30% approximate) overrange. This bit is updated every 125 µs. After it
is set, this bit can be cleared only by software when ADCCFG[2] is cleared to disable the function, or the ADC gain is
changed via the ADC0CON MMR.
2 Not used. This bit is reserved for future functionality and should not be monitored by user code.
1 ADC1RDY Auxiliary ADC result ready bit.
If the auxiliary channel ADC is enabled, this bit is set by hardware as soon as a valid conversion result is written in the
ADC1DAT MMR. It is also set at the end of a calibration sequence.
This bit is cleared by reading ADC1DAT followed by reading ADC0DAT. ADC0DAT must be read to clear this bit, even if
the primary ADC is not enabled.
0 ADC0RDY Primary ADC result ready bit.
If the primary channel ADC is enabled, this bit is set by hardware as soon as a valid conversion result is written in the
ADC0DAT MMR. It is also set at the end of a calibration sequence.
This bit is cleared by reading ADC0DAT.