PIC12F508T-E/MS View Datasheet(PDF) - Microchip Technology
Part Name
Description
Manufacturer
PIC12F508T-E/MS Datasheet PDF : 110 Pages
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PIC12F508/509/16F505
FIGURE 7-11:
WATCHDOG TIMER BLOCK DIAGRAM
From Timer0 Clock Source
(Figure 6-5)
Watchdog
Time
0
M
1U
X
WDT Enable
Configuration
Bit
PSA
Postscaler
8-to-1 MUX
PS<2:0>
0
1
MUX
To Timer0 (Figure 6-4)
PSA
WDT Time-out
Note 1: T0CS, T0SE, PSA, PS<2:0> are bits in the OPTION register.
TABLE 7-7: 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(1) GPWU GPPU T0CS T0SE PSA PS2 PS1 PS0 1111 1111 1111 1111
N/A
OPTION(2) RBWU RBPU T0CS T0SE PSA PS2 PS1 PS0 1111 1111 1111 1111
Legend: Shaded boxes = Not used by Watchdog Timer. – = unimplemented, read as ‘0’, u = unchanged.
Note 1: PIC12F508/509 only.
2: PIC16F505 only.
© 2009 Microchip Technology Inc.
DS41236E-page 53
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