PIC16F505 Microchip Technology, PIC16F505 Datasheet - Page 39

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

FIGURE 6-5:
 2004 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
DS41236A-page 37