PIC16F505 Microchip Technology, PIC16F505 Datasheet - Page 52

• Manufacturer Part Number: PIC16F505
• Description: (PIC1xF50x) 8-Bit Flash Microcontrollers
• Manufacturer: Microchip Technology

PIC12F508/509/16F505
FIGURE 7-12:
TABLE 7-7:
DS41236A-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
Configuration
(1)
(2)
WDT Enable
WATCHDOG TIMER BLOCK DIAGRAM
Watchdog
Time
GPWU
RBWU
Bit
Bit 7
From Timer0 Clock Source
(Figure 6-5)
GPPU T0CS
RBPU
Bit 6
T0CS
0
1
Bit 5
PSA
M
U
X
Preliminary
T0SE
T0SE
Bit 4
Bit 3
PSA
PSA
WDT Time-out
0
MUX
8-to-1 MUX
Postscaler
Postscaler
Bit 2
PS2
PS2
1
Bit 1 Bit 0
PS1
PS1
PSA
To Timer0
PS0
PS0
PS<2:0>
 2004 Microchip Technology Inc.
1111 1111
1111 1111
Power-On
(Figure 6-4)
Value on
Reset
1111 1111
1111 1111
All Other
Value on
Resets