12F508 Microchip Technology, 12F508 Datasheet - Page 52

• Manufacturer Part Number: 12F508
• Description: Search -----> PIC12F508
• Manufacturer: Microchip Technology

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PIC12F508/509/16F505
FIGURE 7-12:
TABLE 7-7:
DS41236B-page 50
N/A
N/A
Legend: Shaded boxes = Not used by Watchdog Timer. – = unimplemented, read as ‘0’, u = unchanged.
Note 1:
Address
2:
Note 1: T0CS, T0SE, PSA, PS<2:0> are bits in the OPTION register.
PIC12F508/509 only.
PIC16F505 only.
OPTION
OPTION
Name
SUMMARY OF REGISTERS ASSOCIATED WITH THE WATCHDOG TIMER
(1)
(2)
Configuration
WDT Enable
WATCHDOG TIMER BLOCK DIAGRAM
Watchdog
GPWU GPPU T0CS
RBWU
Time
Bit 7
Bit
From Timer0 Clock Source
RBPU
(Figure 6-5)
Bit 6
T0CS
Bit 5
0
1
PSA
M
U
X
Preliminary
T0SE
T0SE
Bit 4
Bit 3
PSA
PSA
0
WDT Time-out
MUX
8-to-1 MUX
Bit 2
Postscaler
Postscaler
PS2
PS2
1
Bit 1 Bit 0
PS1
PS1
PSA
To Timer0
PS0
PS0
PS<2:0>
© 2005 Microchip Technology Inc.
1111 1111
1111 1111
Power-On
Value on
(Figure 6-4)
Reset
1111 1111
1111 1111
All Other
Value on
Resets