PIC18F2220 MICROCHIP [Microchip Technology], PIC18F2220 Datasheet - Page 120

• Manufacturer Part Number: PIC18F2220
• Description: 28/40/44-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F2220/2320/4220/4320
FIGURE 11-1:
FIGURE 11-2:
DS39599C-page 118
RA4/T0CKI/C1OUT
RA4/T0CKI/C1OUT
Note:
Note: Upon Reset, Timer0 is enabled in 8-bit mode with clock input from T0CKI maximum prescale.
pin
pin
Upon Reset, Timer0 is enabled in 8-bit mode with clock input from T0CKI maximum prescale.
T0SE
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
0
1
3
(2 T
Sync with
Internal
Clocks
CY
delay)
PSA
0
1
(2 T
Sync with
Internal
Clocks
CY
delay)
TMR0L
8
 2003 Microchip Technology Inc.
High Byte
TMR0H
TMR0
8
Data Bus
TMR0
8
8
8
Flag bit TMR0IF
Read TMR0L
Write TMR0L
Data Bus<7:0>
Set Interrupt
on Overflow
Flag bit TMR0IF
Set Interrupt
on Overflow