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PIC16F7X7 Datasheet(PDF) 189 Page - Microchip Technology

Part # PIC16F7X7
Description  28/40/44-Pin, 8-Bit CMOS Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
PDF  276 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F7X7 Datasheet(HTML) 189 Page - Microchip Technology

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 2004 Microchip Technology Inc.
DS30498C-page 187
PIC16F7X7
REGISTER 15-4:
WDTCON: WATCHDOG TIMER CONTROL REGISTER (ADDRESS 105h)
TABLE 15-6:
SUMMARY OF WATCHDOG TIMER REGISTERS
U-0
U-0
U-0
R/W-0
R/W-1
R/W-0
R/W-0
R/W-0
—
—
—
WDTPS3
WDTPS2
WDTPS1 WDTPS0 SWDTEN
bit 7
bit 0
bit 7-5
Unimplemented: Read as ‘0’
bit 4-1
WDTPS<3:0>: Watchdog Timer Period Select bits
0000
= 1:32 Prescale rate
0001
= 1:64 Prescale rate
0010
= 1:128 Prescale rate
0011
= 1:256 Prescale rate
0100
= 1:512 Prescale rate
0101
= 1:1024 Prescale rate
0110
= 1:2048 Prescale rate
0111
= 1:4096 Prescale rate
1000
= 1:8192 Prescale rate
1001
= 1:16394 Prescale rate
1010
= 1:32768 Prescale rate
1011
= 1:65536 Prescale rate
1100
= 1:1 Prescale rate
bit 0
SWDTEN: Software Enable/Disable for Watchdog Timer bit(1)
1
= WDT is turned on
0
= WDT is turned off
Note 1: If WDTEN configuration bit = 1, then WDT is always enabled irrespective of this
control bit. If WDTEN configuration bit = 0, then it is possible to turn WDT on/off with
this control bit.
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR, BOR
Value on
all other
Resets
81h, 181h OPTION_REG RBPU INTEDG
T0CS
T0SE
PSA
PS2
PS1
PS0
1111 1111 1111 1111
2007h
Configuration
bits(1)
BORV0 BOREN MCLRE FOSC2 PWRTEN WDTEN
FOSC1
FOSC0
1111 1111 1111 1111
105h
WDTCON
—
—
—
WDTPS3 WDTPS2 WSTPS1 WDTPS0 SWDTEN ---0 1000 ---0 1000
Legend:
Shaded cells are not used by the Watchdog Timer.
Note
1:
See Register 15-1 for operation of these bits.



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