PIC16F1933_11 Datasheet, PDF (101/430 Pages) Microchip Technology – 28-Pin Flash-Based, 8-Bit CMOS Microcontrollers LCD Driver and nanoWatt XLP Technology

PIC16(L)F1933
10.6 Watchdog Control Register
REGISTER 10-1: WDTCON: WATCHDOG TIMER CONTROL REGISTER
U-0
—
bit 7
U-0
R/W-0/0
R/W-1/1
R/W-0/0
R/W-1/1
—
WDTPS<4:0>
R/W-1/1
R/W-0/0
SWDTEN
bit 0
Legend:
R = Readable bit
u = Bit is unchanged
‘1’ = Bit is set
W = Writable bit
x = Bit is unknown
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
-m/n = Value at POR and BOR/Value at all other Resets
bit 7-6
bit 5-1
bit 0
Unimplemented: Read as ‘0’
WDTPS<4:0>: Watchdog Timer Period Select bits
Bit Value = Prescale Rate
00000 = 1:32 (Interval 1 ms typ)
00001 = 1:64 (Interval 2 ms typ)
00010 = 1:128 (Interval 4 ms typ)
00011 = 1:256 (Interval 8 ms typ)
00100 = 1:512 (Interval 16 ms typ)
00101 = 1:1024 (Interval 32 ms typ)
00110 = 1:2048 (Interval 64 ms typ)
00111 = 1:4096 (Interval 128 ms typ)
01000 = 1:8192 (Interval 256 ms typ)
01001 = 1:16384 (Interval 512 ms typ)
01010 = 1:32768 (Interval 1s typ)
01011 = 1:65536 (Interval 2s typ) (Reset value)
01100 = 1:131072 (2¹⁷) (Interval 4s typ)
01101 = 1:262144 (2¹⁸) (Interval 8s typ)
01110 = 1:524288 (2¹⁹) (Interval 16s typ)
01111 = 1:1048576 (2²⁰) (Interval 32s typ)
10000 = 1:2097152 (2²¹) (Interval 64s typ)
10001 = 1:4194304 (2²²) (Interval 128s typ)
10010 = 1:8388608 (2²³) (Interval 256s typ)
10011 = Reserved. Results in minimum interval (1:32)
•
•
•
11111 = Reserved. Results in minimum interval (1:32)
SWDTEN: Software Enable/Disable for Watchdog Timer bit
If WDTE<1:0> = 00:
This bit is ignored.
If WDTE<1:0> = 01:
1 = WDT is turned on
0 = WDT is turned off
If WDTE<1:0> = 1x:
This bit is ignored.
 2011 Microchip Technology Inc.
Preliminary
DS41575A-page 101