6.3 Configuration Word 3

Note:

The value of WDTCWS is written to the WINDOW bits (WDTCON01[WINDOW]) on POR to set the initial WDT window configuration.
The value of WDTCPS is written to the WDTPS bits (WDTCON0[WDTPS]) on POR to set the initial WDT time-out period.

Name:	CONFIG3
Offset:	0x8009


Bit	15	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


Bit	7	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

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

Value	Name	Description
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 ⁽¹⁾


Value	Description
Value	Window Delay Percent of Time	Window Opening Percent of Time	Software Control of WINDOW	Keyed Access Required
`111`	n/a	100	Yes	No
`110`	n/a	100	No	Yes
`101`	25	75
`100`	37.5	62.5
`011`	50	50
`010`	62.5	37.5
`001`	75	25
`000`	87.5	12.5

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

Value	Description
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 ⁽²⁾


Value	Description
Value	Divider Ratio		Typical Time-Out (F_IN = 31 kHz)	Software Control of WDTPS
`11111`	1:65536	2¹⁶	2s	Yes
`11110 to 10011`	1:32	2⁵	1 ms	No
`10010`	1:8388608	2²³	256s	No
`10001`	1:4194304	2²²	128s	No
`10000`	1:2097152	2²¹	64s	No
`01111`	1:1048576	2²⁰	32s	No
`01110`	1:524288	2¹⁹	16s	No
`01101`	1:262144	2¹⁸	8s	No
`01100`	1:131072	2¹⁷	4s	No
`01011`	1:65536	2¹⁶	2s	No
`01010`	1:32768	2¹⁵	1s	No
`01001`	1:16384	2¹⁴	512 ms	No
`01000`	1:8192	2¹³	256 ms	No
`00111`	1:4096	2¹²	128 ms	No
`00110`	1:2048	2¹¹	64 ms	No
`00101`	1:1024	2¹⁰	32 ms	No
`00100`	1:512	2⁹	16 ms	No
`00011`	1:256	2⁸	8 ms	No
`00010`	1:128	2⁷	4 ms	No
`00001`	1:64	2⁶	2 ms	No
`00000`	1:32	2⁵	1 ms	No

The value of WDTCWS is written to the WINDOW bits (WDTCON01[WINDOW]) on POR to set the initial WDT window configuration. The value of WDTCPS is written to the WDTPS bits (WDTCON0[WDTPS]) on POR to set the initial WDT time-out period.

6.3 Configuration Word 3

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

Bits 10:8 – WDTCWS[2:0] WDT Window Select (1)

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

Bits 4:0 – WDTCPS[4:0] WDT Period Select (2)

Bits 10:8 – WDTCWS[2:0] WDT Window Select ⁽¹⁾

Bits 4:0 – WDTCPS[4:0] WDT Period Select ⁽²⁾