PIC17C75X Datasheet, PDF (36/320 Pages) Microchip Technology – High-Performance 8-Bit CMOS EPROM Microcontrollers

PIC17C75X
FIGURE 6-7: INT PIN / T0CKI PIN INTERRUPT TIMING
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
OSC1
OSC2
RA0/INT or
RA1/T0CKI
INTF or
T0CKIF
GLINTD
PC
System Bus
Instruction
Fetched
Instruction
executed
PC
PC + 1
Addr (Vector)
YY
YY + 1
PC + 1
PC Inst (PC) Addr Inst (PC+1) Addr Inst (PC+1) Addr Inst (Vector) Addr RETFIE Addr Inst (YY + 1)
Inst (PC)
Dummy
Dummy
RETFIE
Dummy
DS30264A-page 36
Preliminary
© 1997 Microchip Technology Inc.