12F508 Microchip Technology, 12F508 Datasheet - Page 39

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

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FIGURE 6-5:
© 2005 Microchip Technology Inc.
Note 1: T0CS, T0SE, PSA, PS<2:0> are bits in the OPTION register.
WDT Enable bit
(GP2/RC5)/T0CKI
Watchdog
Timer
T
2: T0CKI is shared with pin RC5 on the PIC16F505 and pin GP2 on the PIC12F508/509.
CY
pin
(= F
T0SE
OSC
BLOCK DIAGRAM OF THE TIMER0/WDT PRESCALER
/4)
0
1
PSA
M
U
X
0
1
T0CS
M
U
X
8-bit Prescaler
0
Preliminary
8-to-1 MUX
Time-out
8
MUX
WDT
PIC12F508/509/16F505
1
0
1
PSA
M
U
X
PSA
PS<2:0>
Cycles
Sync
2
(1), (2)
TMR0 Reg
Data Bus
8
DS41236B-page 37