PIC16F688

Manufacturer Part NumberPIC16F688
ManufacturerMicrochip Technology Inc.
PIC16F688 datasheet
 


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PIC16F688
REGISTER 11-2:
WDTCON: WATCHDOG TIMER CONTROL REGISTER
U-0
U-0
U-0
bit 7
Legend:
R = Readable bit
W = Writable bit
-n = Value at POR
‘1’ = Bit is set
bit 7-5
Unimplemented: Read as ‘0’
bit 4-1
WDTPS<3:0>: Watchdog Timer Period Select bits
Bit Value = Prescale Rate
0000 = 1:32
0001 = 1:64
0010 = 1:128
0011 = 1:256
0100 = 1:512 (Reset value)
0101 = 1:1024
0110 = 1:2048
0111 = 1:4096
1000 = 1:8192
1001 = 1:16384
1010 = 1:32768
1011 = 1:65536
1100 = Reserved
1101 = Reserved
1110 = Reserved
1111 = Reserved
bit 0
SWDTEN: Software Enable or Disable the Watchdog Timer
1 = WDT is turned on
0 = WDT is turned off (Reset value)
Note 1:
If WDTE Configuration bit = 1, then WDT is always enabled, irrespective of this control bit. If WDTE
Configuration bit = 0, then it is possible to turn WDT on/off with this control bit.
TABLE 11-8:
SUMMARY OF REGISTERS ASSOCIATED WITH WATCHDOG TIMER
Name
Bit 7
Bit 6
Bit 5
WDTCON
OPTION_REG
RAPU
INTEDG
T0CS
CONFIG
CPD
CP
MCLRE
Legend:
Shaded cells are not used by the Watchdog Timer.
Note 1:
See Register 11.0 for operation of all Configuration Word register bits.
DS41203D-page 124
R/W-0
R/W-1
R/W-0
WDTPS3
WDTPS2
WDTPS1
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
(1)
Bit 4
Bit 3
Bit 2
Bit 1
WDTPS3 WDTPS2 WSTPS1 WDTPS0 SWDTEN ---0 1000
T0SE
PSA
PS2
PS1
PWRTE
WDTE
FOSC2
FOSC1
R/W-0
R/W-0
WDTPS0
SWDTEN
bit 0
x = Bit is unknown
Value on
Value on
Bit 0
all other
POR, BOR
Resets
---0 1000
PS0
1111 1111
1111 1111
FOSC0
© 2007 Microchip Technology Inc.