PIC17C75X Datasheet, PDF (105/320 Pages) Microchip Technology – High-Performance 8-Bit CMOS EPROM Microcontrollers

PIC17C75X
FIGURE 13-11: TIMER1, TIMER2, AND TIMER3 OPERATION (IN TIMER MODE)
Q1Q2 Q3 Q4 Q1Q2 Q3 Q4 Q1Q2 Q3 Q4 Q1Q2 Q3 Q4 Q1Q2 Q3 Q4 Q1Q2 Q3 Q4 Q1Q2 Q3 Q4 Q1Q2 Q3 Q4 Q1Q2 Q3 Q4 Q1Q2 Q3 Q4 Q1Q2 Q3 Q4
AD15:AD0
ALE
Instruction
fetched
MOVWF
MOVF
MOVF
MOVLB 3
BSF
TMR1
TMR1, W TMR1, W
TCON2, 0
Write TMR1 Read TMR1 Read TMR1
Stop TMR1
NOP
BCF
TCON2, 0
Start TMR1
NOP
NOP
NOP
NOP
TMR1
04h
05h
03h
04h
05h
06h
07h
PR1
TMR1ON
WR_TMR1
WR_TCON2
TMR1IF
RD_TMR1
TMR1
TMR1
reads 03h reads 04h
08h
00h
© 1997 Microchip Technology Inc.
Preliminary
DS30264A-page 105