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PIC16F946-E/MLQTP Datasheet(PDF) 237 Page - Microchip Technology

Part # PIC16F946-E/MLQTP
Description  28/40/44/64-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt Technology
PDF  330 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F946-E/MLQTP Datasheet(HTML) 237 Page - Microchip Technology

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© 2007 Microchip Technology Inc.
DS41250F-page 235
PIC16F913/914/916/917/946
REGISTER 16-2:
WDTCON – WATCHDOG TIMER CONTROL REGISTER (ADDRESS: 105h)
TABLE 16-8:
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
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 bit(1)
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.
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
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
CONFIG
CPD
CP
MCLRE
PWRTE
WDTE
FOSC2
FOSC1
FOSC0
OPTION_REG
RBPU
INTEDG
T0CS
T0SE
PSA
PS2
PS1
PS0
WDTCON
—
—
—
WDTPS3
WDTPS2
WSTPS1
WDTPS0
SWDTEN
Legend: Shaded cells are not used by the Watchdog Timer.
Note 1:
See Register 16-1 for operation of all Configuration Word register bits.



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