PIC18F1220 MICROCHIP [Microchip Technology], PIC18F1220 Datasheet - Page 102

• Manufacturer Part Number: PIC18F1220
• Description: 18/20/28-Pin High-Performance, Enhanced Flash Microcontrollers with 10-bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F1220/1320
FIGURE 11-1:
FIGURE 11-2:
DS39605C-page 100
RA4/T0CKI
Note:
Note:
RA4/T0CKI
pin
pin
T0SE
Upon Reset, Timer0 is enabled in 8-bit mode with clock input from T0CKI maximum prescale.
Upon Reset, Timer0 is enabled in 8-bit mode with clock input from T0CKI maximum prescale.
T0SE
F
OSC
F
OSC
/4
TIMER0 BLOCK DIAGRAM IN 8-BIT MODE
TIMER0 BLOCK DIAGRAM IN 16-BIT MODE
/4
T0CS
0
1
T0PS2, T0PS1, T0PS0
T0CS
Programmable
0
1
Prescaler
3
T0PS2, T0PS1, T0PS0
Programmable
Prescaler
PSA
1
0
3
(2 T
Sync with
Internal
Clocks
CY
Delay)
PSA
1
0
(2 T
Sync with
Internal
Clocks
CY
Delay)
TMR0L
8
 2004 Microchip Technology Inc.
High Byte
TMR0H
TMR0
8
Data Bus
TMR0
8
8
8
Read TMR0L
Flag bit TMR0IF
Write TMR0L
Data Bus<7:0>
Set Interrupt
on Overflow
Flag bit TMR0IF
Set Interrupt
on Overflow