PIC16F526 Datasheet, PDF (54/122 Pages) Microchip Technology – 14-Pin, 8-Bit Flash Microcontroller

PIC16F526
FIGURE 8-11:
WATCHDOG TIMER BLOCK DIAGRAM
From Timer0 Clock Source
(Figure 7-1)
Watchdog
Time
0
M
1_U
X
WDT Enable
Configuration
Bit
PSA
Postscaler
8-to-1 MUX
PS<2:0>⁽¹⁾
0
1
MUX
To Timer0 (Figure 7-4)
PSA⁽¹⁾
WDT Time-out
Note 1: PSA, PS<2:0> are bits in the OPTION register.
TABLE 8-6: SUMMARY OF REGISTERS ASSOCIATED WITH THE WATCHDOG TIMER
Address Name
Bit 7
Bit 6
Bit 5
Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Value on
Power-On
Reset
Value on
All Other
Resets
N/A
OPTION RBWU RBPU T0CS T0SE PSA PS2 PS1 PS0 1111 1111 1111 1111
Legend: Shaded boxes = Not used by Watchdog Timer.
DS41326D-page 54
 2010 Microchip Technology Inc.