Datasheet
2009-2011 Microchip Technology Inc. DS41365E-page 109
PIC18(L)F1XK22
FIGURE 12-2: TIMER3 BLOCK DIAGRAM (16-BIT READ/WRITE MODE)
T3SYNC
TMR3CS
T3CKPS<1:0>
Sleep Input
F
OSC/4
Internal
Clock
Prescaler
1, 2, 4, 8
Synchronize
Detect
1
0
2
OSC1/T1OSI
OSC2
Note 1: When enable bit, T1OSCEN, is cleared, the inverter and feedback resistor are turned off to eliminate power drain.
1
0
TMR3L
Internal Data Bus
8
Set
TMR3IF
on Overflow
TMR3
TMR3H
High Byte
8
8
8
Read TMR1L
Write TMR1L
8
TMR3ON
CCP1 Special Event Trigger
Timer1 Oscillator
On/Off
Timer3
Timer1 Clock Input
CCP1 Select from T3CON<3>
Clear TMR3
T1OSCEN
(1)
INTOSC
Without CLKOUT