PIC16F636T-I Datasheet, PDF (67/234 Pages) Microchip Technology – 8/14-Pin, Flash-Based 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC12F635/PIC16F636/639
FIGURE 6-1:
TIMER1 BLOCK DIAGRAM
TMR1GE
T1GINV
Set flag bit
TMR1IF on
Overflow
TMR1⁽²⁾
TMR1H
EN
TMR1L
TMR1ON
To C2 Comparator Module
Timer1 Clock
Synchronized
0
clock input
OSC1/T1CKI
OSC2/T1G
INTOSC
Without CLKOUT
T1OSCEN
Oscillator
1
(1)
T1SYNC
1
Prescaler
Synchronize⁽³⁾
1, 2, 4, 8
0
det
2
T1CKPS<1:0>
TMR1CS
1
FOSC
1
FOSC/4
Internal
Clock
0
T1ACS
CxOUT
0
T1GSS
Note 1:
2:
3:
ST Buffer is low power type when using LP osc, or high speed type when using T1CKI.
Timer1 register increments on rising edge.
Synchronize does not operate while in Sleep.
© 2007 Microchip Technology Inc.
DS41232D-page 65