PIC18CXX2_13 Datasheet, PDF (94/304 Pages) Microchip Technology – High Performance Microcontrollers with 10-bit A/D

PIC18CXX2
FIGURE 9-1:
TIMER0 BLOCK DIAGRAM IN 8-BIT MODE
FOSC/4
RA4/T0CKI
pin
T0SE
0
0
1
Programmable
1
Prescaler
3
T0PS2, T0PS1, T0PS0
T0CS
PSA
Sync with
Internal
Clocks
(2 TCY delay)
Note: Upon RESET, Timer0 is enabled in 8-bit mode with clock input from T0CKI max. prescale.
Data Bus
8
TMR0
Set Interrupt
Flag bit TMR0IF
on Overflow
FIGURE 9-2:
TIMER0 BLOCK DIAGRAM IN 16-BIT MODE
FOSC/4
T0CKI pin
T0SE
0
0
1
Programmable 1
Prescaler
3
T0PS2, T0PS1, T0PS0
T0CS
PSA
Sync with
Internal
Clocks
(2 TCY delay)
TMR0L
8
TMR0
High Byte
8
Set Interrupt
Flag bit TMR0IF
on Overflow
8
TMR0H
Read TMR0L
Write TMR0L
8
Data Bus<7:0>
Note: Upon RESET, Timer0 is enabled in 8-bit mode with clock input from T0CKI max. prescale.
DS39026D-page 94
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