CONFIG3
| Bit15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
| WDTCCS[2:0] | WDTCWS[2:0] | ||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | |
| Reset | 1 | 1 | 1 | 1 | 1 | 1 | |
| Bit7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| WDTE[1:0] | WDTCPS[4:0] | ||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W |
| Reset | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
WDT Input Clock Selector bits
| Value | Name | Description |
|---|---|---|
| x | WDTE=00 | These bits have no effect |
| 111 | WDTE≠00 | Software Control |
| 110 to 010 | WDTE≠00 | Reserved (Default to LFINTOSC) |
| 001 | WDTE≠00 | WDT reference clock is the 31.25 kHz MFINTOSC |
| 000 | WDTE≠00 | WDT reference clock is the 31.0 kHz LFINTOSC (default value) |
WDT Window Select bits
| WDTCWS | WDTCON1[WINDOW] at POR | Software control of WINDOW | Keyed access required? | ||
|---|---|---|---|---|---|
| Value | Window delay Percent of time | Window opening Percent of time | |||
| 111 | 111 | n/a | 100 | Yes | No |
| 110 | 110 | n/a | 100 | No | Yes |
| 101 | 101 | 25 | 75 | ||
| 100 | 100 | 37.5 | 62.5 | ||
| 011 | 011 | 50 | 50 | ||
| 010 | 010 | 62.5 | 37.5 | ||
| 001 | 001 | 75 | 25 | ||
| 000 | 000 | 87.5 | 12.5 | ||
WDT Operating Mode bits
| Value | Description |
|---|---|
| 11 | WDT enabled regardless of Sleep; SEN bit in WDTCON0 is ignored |
| 10 | WDT enabled
while Sleep = 0, suspended when Sleep =
1; SEN bit in WDTCON0 is
ignored |
| 01 | WDT enabled/disabled by SEN bit in WDTCON0 |
| 00 | WDT disabled, SEN bit in WDTCON0 is ignored |
WDT Period Select bits
| WDTCPS | WDTCON0[WDTPS] at POR | Software Control of WDTPS? | |||
|---|---|---|---|---|---|
| Value | Divider Ratio | Typical Time-Out (FIN = 31 kHz) |
|||
| 11111 | 01011 | 1:65536 | 216 | 2s | Yes |
|
11110 |
11110 |
1:32 | 25 | 1 ms | No |
| 10010 | 10010 | 1:8388608 | 223 | 256s | No |
| 10001 | 10001 | 1:4194304 | 222 | 128s | |
| 10000 | 10000 | 1:2097152 | 221 | 64s | |
| 01111 | 01111 | 1:1048576 | 220 | 32s | |
| 01110 | 01110 | 1:524299 | 219 | 16s | |
| 01101 | 01101 | 1:262144 | 218 | 8s | |
| 01100 | 01100 | 1:131072 | 217 | 4s | |
| 01011 | 01011 | 1:65536 | 216 | 2s | |
| 01010 | 01010 | 1:32768 | 215 | 1s | |
| 01001 | 01001 | 1:16384 | 214 | 512 ms | |
| 01000 | 01000 | 1:8192 | 213 | 256 ms | |
| 00111 | 00111 | 1:4096 | 212 | 128 ms | |
| 00110 | 00110 | 1:2048 | 211 | 64 ms | |
| 00101 | 00101 | 1:1024 | 210 | 32 ms | |
| 00100 | 00100 | 1:512 | 29 | 16 ms | |
| 00011 | 00011 | 1:256 | 28 | 8 ms | |
| 00010 | 00010 | 1:128 | 27 | 4 ms | |
| 00001 | 00001 | 1:64 | 26 | 2 ms | |
| 00000 | 00000 | 1:32 | 25 | 1 ms | |