14.3.34 ADC Digital Comparator x Control Register (x = 0, 1, 2, 3)
Legend: HC = Hardware Clearable bit; HS = Hardware Settable bit; HSC = Hardware Settable/Clearable bit
| Name: | ADCMPxCON |
| Offset: | 0xBA0, 0xBA4, 0xBA8, 0xBAC |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| CHNL[4:0] | |||||||||
| Access | HSC/R | HSC/R | HSC/R | HSC/R | HSC/R | ||||
| Reset | 0 | 0 | 0 | 0 | 0 | ||||
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| CMPEN | IE | STAT | BTWN | HIHI | HILO | LOHI | LOLO | ||
| Access | R/W | R/W | HS/HC/R | R/W | R/W | R/W | R/W | R/W | |
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Bits 12:8 – CHNL[4:0] Input Channel Number bits
| Value | Description |
|---|---|
11111-11100 |
Reserved |
11011 |
AN27 |
11010 |
AN26 |
11001 |
Band gap, 1.2V (AN25) |
11000 |
Temperature sensor (AN24) |
10111 |
AN23 |
| . . . | |
00010 |
AN2 |
00001 |
AN1 |
00000 |
AN0 |
Bit 7 – CMPEN Comparator Enable bit
| Value | Description |
|---|---|
1 |
Comparator is enabled |
0 |
Comparator is disabled and the STAT status bit is cleared |
Bit 6 – IE Comparator Common ADC Interrupt Enable bit
| Value | Description |
|---|---|
1 |
Common ADC interrupt will be generated if the comparator detects a comparison event instead of digital comparator interrupt |
0 |
ADC interrupt will not be generated for the comparator |
Bit 5 – STAT Comparator Event Status bit
This bit is cleared by hardware when the channel number is read from the CHNL[4:0] bits.
| Value | Description |
|---|---|
1 |
A comparison event has been detected since the last read of the CHNL[4:0] bits |
0 |
A comparison event has not been detected since the last read of the CHNL[4:0] bits |
Bit 4 – BTWN Between Low/High Comparator Event bit
| Value | Description |
|---|---|
1 |
Generates a comparator event when ADCMPxLO ≤ ADCBUFx < ADCMPxHI |
0 |
Does not generate a digital comparator event when ADCMPxLO ≤ ADCBUFx < ADCMPxHI |
Bit 3 – HIHI High/High Comparator Event bit
| Value | Description |
|---|---|
1 |
Generates a digital comparator event when ADCBUFx ≥ ADCMPxHI |
0 |
Does not generate a digital comparator event when ADCBUFx ≥ ADCMPxHI |
Bit 2 – HILO High/Low Comparator Event bit
| Value | Description |
|---|---|
1 |
Generates a digital comparator event when ADCBUFx < ADCMPxHI |
0 |
Does not generate a digital comparator event when ADCBUFx < ADCMPxHI |
Bit 1 – LOHI Low/High Comparator Event bit
| Value | Description |
|---|---|
1 |
Generates a digital comparator event when ADCBUFx ≥ ADCMPxLO |
0 |
Does not generate a digital comparator event when ADCBUFx ≥ ADCMPxLO |
Bit 0 – LOLO Low/Low Comparator Event bit
| Value | Description |
|---|---|
1 |
Generates a digital comparator event when ADCBUFx < ADCMPxLO |
0 |
Does not generate a digital comparator event when ADCBUFx < ADCMPxLO |