31.5.4 ADCON3
| Name: | ADCON3 |
| Offset: | 0x1D29 |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| CALC[2:0] | SOI | TMD[2:0] | |||||||
| Access | R/W | R/W | R/W | R/W/HC | R/W | R/W | R/W | ||
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
Bits 6:4 – CALC[2:0] ADC Error Calculation Mode Select
| CALC | ADERR | Application | |
|---|---|---|---|
DSEN = 0
Single-Sample Mode | DSEN = 1 CVD
Double-Sample Mode(1) | ||
111 | Reserved | Reserved | Reserved |
110 | Reserved | Reserved | Reserved |
101 | ADFLTR-ADSTPT | ADFLTR-ADSTPT | Average/filtered value vs. setpoint |
100 | ADPREV-ADFLTR | ADPREV-ADFLTR | First derivative of filtered value(3) (negative) |
011 | Reserved | Reserved | Reserved |
010 | ADRES-ADFLTR | (ADRES-ADPREV)-ADFLTR | Actual result vs. averaged/filtered value |
001 | ADRES-ADSTPT | (ADRES-ADPREV)-ADSTPT | Actual result vs. setpoint |
000 | ADRES-ADPREV | ADRES-ADPREV | First derivative of single measurement(2) |
| Actual CVD result(2) | |||
|
Note:
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Bit 3 – SOI ADC Stop-on-Interrupt
| Value | Name | Description |
|---|---|---|
| x | CONT = 0 | This bit is not used |
| 1 | CONT = 1 | GO is cleared when the Threshold conditions are met, otherwise the conversion is retriggered |
| 0 | CONT = 1 | GO is not cleared by hardware, must be cleared by software to stop retriggers |
Bits 2:0 – TMD[2:0] Threshold Interrupt Mode Select
| Value | Description |
|---|---|
| 111 | Interrupt regardless of threshold test results |
| 110 | Interrupt if ADERR > ADUTH |
| 101 | Interrupt if ADERR ≤ ADUTH |
| 100 | Interrupt if ADERR < ADLTH or ADERR > ADUTH |
| 011 | Interrupt if ADERR > ADLTH and ADERR < ADUTH |
| 010 | Interrupt if ADERR ≥ ADLTH |
| 001 | Interrupt if ADERR < ADLTH |
| 000 | Never interrupt |