PIC18C242 MICROCHIP [Microchip Technology], PIC18C242 Datasheet - Page 94

• Manufacturer Part Number: PIC18C242
• Description: High-Performance Microcontrollers with 10-Bit A/D
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18CXX2
FIGURE 9-1:
FIGURE 9-2:
DS39026B-page 94
T0CKI pin
RA4/T0CKI
Pin
Note:
Note:
T0SE
F
OSC
T0SE
Upon reset, Timer0 is enabled in 8-bit mode with clock input from T0CKI max. prescale.
Upon reset, Timer0 is enabled in 8-bit mode with clock input from T0CKI max. prescale.
/4
F
TIMER0 BLOCK DIAGRAM IN 8-BIT MODE
TIMER0 BLOCK DIAGRAM IN 16-BIT MODE
OSC
/4
T0CS
0
1
T0PS2, T0PS1, T0PS0
T0CS
Programmable
0
1
Prescaler
3
T0PS2, T0PS1, T0PS0
Programmable
Prescaler
PSA
0
1
3
Preliminary
(2 Tcy delay)
Sync with
Internal
Clocks
PSA
0
1
(2 Tcy delay)
Sync with
Internal
clocks
TMR0L
8
High Byte
TMR0H
TMR0
8
7/99 Microchip Technology Inc.
8
Data Bus
TMR0
8
Read TMR0L
Write TMR0L
Data Bus<7:0>
8
Flag bit TMR0IF
Flag bit TMR0IF
Set Interrupt
Set Interrupt
on overflow
on overflow