
PIC16C62B/72A
FIGURE 5-1: TIMER1 BLOCK DIAGRAM
Set flag bit
TMR1IF on
Overflow
RC0/T1OSO/T1CKI
RC1/T1OSI
TMR1
0
Synchronized
clock input
TMR1H TMR1L
1
T1OSC
TMR1ON
on/off
T1SYNC
T1OSCEN FOSC/4
Enable
Oscillator(1)
Internal
Clock
1
Prescaler
1, 2, 4, 8
0
2
T1CKPS1:T1CKPS0
Synchronize
det
SLEEP input
TMR1CS
Note 1: When the T1OSCEN bit is cleared, the inverter and feedback resistor are turned off. This eliminates power drain.
DS35008B-page 28
Preliminary
© 1999 Microchip Technology Inc.