aduc7030 Analog Devices, Inc., aduc7030 Datasheet - Page 53

• Manufacturer Part Number: aduc7030
• Description: Integrated Precision Battery Sensor For Automotive
• Manufacturer: Analog Devices, Inc.

Bit
15
14
13
12
11-5
4
3
2
1
0
Preliminary Technical Data
ADC MMR INTERFACE
The ADC is controlled and configured via a number of MMRs that are described in detail in the following pages:
ADC Status Register:
Name:
Address:
Default Value:
Access:
Function:
Table 28. ADCSTA MMR Bit Designations
NOTES
1. All bits defined in the top 8 MSBs (bits 8–15) of the MMR are used as flags only and will not generate interrupts
2. All bits defined in the lower 8 LSBs (bits 0-7) of this MMR are logic OR’ e d to produce a single ADC interrupt to the MCU core.
Description
ADC Calibration Status
This bit is set automatically in hardware to indicate an ADC calibration cycle has been completed.
This bit is cleared after ADCMDE is written to.
ADC Temperature Conversion Error
This bit is set automatically in hardware to indicate that a temperature conversion over-range or under-range has occurred. The
conversion result will be clamped to negative full-scale (under-range error) or positive full-scale (over-range error) in this case.
This bit will be cleared when a valid (in-range) temperature conversion result is written to the ADC2DAT register.
ADC Voltage Conversion Error
This bit is set automatically in hardware to indicate that a voltage conversion over-range or under-range has occurred. The
conversion result will be clamped to negative full-scale (under-range error) or positive full-scale (over-range error) in this case.
This bit will be cleared when a valid (in-range) voltage conversion result is written to the ADC1DAT register.
ADC Current Conversion Error
This bit is set automatically in hardware to indicate that a current conversion over-range or under-range has occurred. The conversion
result will be clamped to negative full-scale (under-range error) or positive full-scale (over-range error) in this case.
This bit will be cleared when a valid (in-range) current conversion result is written to the ADC0DAT register.
Not Used
This bit is reserved for future functionality and should not be monitored by user code
Current Channel ADC Comparator Threshold
This bit is only valid if the Current Channel ADC comparator is enabled via the ADCCFG MMR. This bit is set by hardware if the
absolute value of the I-ADC conversion result exceeds the value written in the ADC0TH MMR. If the ADC threshold counter is used
(ADC0TCL), this bit is only set once the specified number of I-ADC conversions equals the value in the ADC0THV MMR.
Current Channel ADC Over-Range Bit
If the Over-Range Detect function is enabled via the ADCCFG MMR, this bit is set by hardware if the I-ADC input is grossly (>30%
approx.) over-ranged. This bit is updated every 125µsecs. Once set, this bit can only be cleared by software when ADCCFG[2] is
cleared to disable the function, or the ADC gain is changed via the ADC0CON MMR.
Temperature Conversion Result Ready Bit
If the Temperature Channel ADC is enabled, this bit is set by hardware as soon as a valid temperature conversion result is written in
the temperature data register (ADC2DAT MMR). It is also set at the end of a calibration
This bit is cleared by reading either ADC2DAT or ADC0DAT.
Voltage Conversion Result Ready Bit
If the Voltage Channel ADC is enabled, this bit is set by hardware as soon as a valid voltage conversion result is written in the voltage
data register (ADC1DAT MMR) It is also set at the end of a calibration
This bit is cleared by reading either ADC1DAT or ADC0DAT.
Current Conversion Result Ready Bit
If the Current Channel ADC is enabled, this bit is set by hardware as soon as a valid current conversion result is written in the current
data register (ADC0DAT MMR) It is also set at the end of a calibration
This bit is cleared by reading ADC0DAT.
ADCSTA
0xFFFF0500
0x0000
Read Only
This read only register holds general status information related to the mode of operation or current status of the
ADuC7030/ADuC7033 ADCs.
Rev. PrE | Page 53 of 150
ADuC7030/ADuC7033