CONFIG3

Note: This register is reserved.
Name:
CONFIG3
Offset:
0x8009
Reset:
Access:
Bit15141312111098
WDTCCS[2:0]WDTCWS[2:0]
AccessR/WR/WR/WR/WR/WR/W
Reset111111
Bit76543210
WDTE[1:0]WDTCPS[4:0]
AccessR/WR/WR/WR/WR/WR/WR/W
Reset1111111

Bits 13:11 – WDTCCS[2:0]: WDT Input Clock Selector

WDT Input Clock Selector

ValueNameDescription
x WDTE = 00 These bits have no effect
111 WDTE ≠ 00 Software control
110 to 011 WDTE ≠ 00 Reserved
010 WDTE ≠ 00 WDT reference clock is the SOSC
001 WDTE ≠ 00 WDT reference clock is the 31.25 kHz MFINTOSC
000 WDTE ≠ 00 WDT reference clock is the 31.0 kHz LFINTOSC

Bits 10:8 – WDTCWS[2:0]: WDT Window Select

WDT Window Select

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

Bits 6:5 – WDTE[1:0]: WDT Operating Mode

WDT Operating Mode

ValueDescription
11 WDT enabled regardless of Sleep; the SEN bit in WDTCON0 is ignored
10 WDT enabled while Sleep = 0, suspended when Sleep = 1; the SEN bit in WDTCON0 is ignored
01 WDT enabled/disabled by the SEN bit in WDTCON0
00 WDT disabled, the SEN bit in WDTCON0 is ignored

Bits 4:0 – WDTCPS[4:0]: WDT Period Select

WDT Period Select

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 to 10011 11110 to 10011 1:32 25 1 ms No
10010 10010 1:8388608 223 256s No
10001 10001 1:4194304 222 128s No
10000 10000 1:2097152 221 64s No
01111 01111 1:1048576 220 32s No
01110 01110 1:524288 219 16s No
01101 01101 1:262144 218 8s No
01100 01100 1:131072 217 4s No
01011 01011 1:65536 216 2s No
01010 01010 1:32768 215 1s No
01001 01001 1:16384 214 512 ms No
01000 01000 1:8192 213 256 ms No
00111 00111 1:4096 212 128 ms No
00110 00110 1:2048 211 64 ms No
00101 00101 1:1024 210 32 ms No
00100 00100 1:512 29 16 ms No
00011 00011 1:256 28 8 ms No
00010 00010 1:128 27 4 ms No
00001 00001 1:64 26 2 ms No
00000 00000 1:32 25 1 ms No