PIC16F1516 datasheet(95/344 Pages) MICROCHIP

95 / 344 page

 2011 Microchip Technology Inc.

Preliminary

DS41452B-page 95

PIC16(L)F1516/7/8/9

10.6

Watchdog Control Register

WDTCON: WATCHDOG TIMER CONTROL REGISTER

U-0

R/W-0/0

R/W-1/1

R/W-0/0

R/W-1/1

R/W-0/0

—

WDTPS<4:0>

SWDTEN

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

u = Bit is unchanged

x = Bit is unknown

-m/n = Value at POR and BOR/Value at all other Resets

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 7-6

Unimplemented:

Read as ‘0’

bit 5-1

WDTPS<4:0>:

Watchdog Timer Period Select bits(1)

Bit Value = Prescale Rate

00000

= 1:32 (Interval 1 ms nominal)

00001

= 1:64 (Interval 2 ms nominal)

00010

= 1:128 (Interval 4 ms nominal)

00011

= 1:256 (Interval 8 ms nominal)

00100

= 1:512 (Interval 16 ms nominal)

00101

= 1:1024 (Interval 32 ms nominal)

00110

= 1:2048 (Interval 64 ms nominal)

00111

= 1:4096 (Interval 128 ms nominal)

01000

= 1:8192 (Interval 256 ms nominal)

01001

= 1:16384 (Interval 512 ms nominal)

01010

= 1:32768 (Interval 1s nominal)

01011

= 1:65536 (Interval 2s nominal) (Reset value)

01100

= 1:131072 (217) (Interval 4s nominal)

01101

= 1:262144 (218) (Interval 8s nominal)

01110

= 1:524288 (219) (Interval 16s nominal)

01111

= 1:1048576 (220) (Interval 32s nominal)

10000

= 1:2097152 (221) (Interval 64s nominal)

10001

= 1:4194304 (222) (Interval 128s nominal)

10010

= 1:8388608 (223) (Interval 256s nominal)

10011

= Reserved. Results in minimum interval (1:32)

•

11111

= Reserved. Results in minimum interval (1:32)

bit 0

SWDTEN:

Software Enable/Disable for Watchdog Timer bit

If WDTE<1:0> = 00:

This bit is ignored.

If WDTE<1:0> = 01:

= WDT is turned on

= WDT is turned off

If WDTE<1:0> = 1x:

This bit is ignored.

Note 1:

Times are approximate. WDT time is based on 31 kHz LFINTOSC.

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