PIC18F6525_13 Datasheet, PDF (132/400 Pages) Microchip Technology – 64/80-Pin High-Performance, 64-Kbyte Enhanced Flash Microcontrollers with A/D

PIC18F6525/6621/8525/8621
FIGURE 11-1:
TIMER0 BLOCK DIAGRAM IN 8-BIT MODE
FOSC/4
T0CKI pin
T0SE
0
1
1
Programmable ₀
Prescaler
3
PSA
T0PS2, T0PS1, T0PS0
T0CS
Sync with
Internal
Clocks
(2 TCY Delay)
Data Bus
8
TMR0
Set Interrupt
Flag bit TMR0IF
on Overflow
Note: Upon Reset, Timer0 is enabled in 8-bit mode with clock input from T0CKI max. prescale.
FIGURE 11-2:
TIMER0 BLOCK DIAGRAM IN 16-BIT MODE
FOSC/4
T0CKI pin
T0SE
0
1
1
Programmable ₀
Prescaler
3
PSA
T0PS2, T0PS1, T0PS0
T0CS
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.
DS39612C-page 132
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