PIC16F1847_13 Datasheet, PDF (85/440 Pages) Microchip Technology – 18/20/28-Pin Flash Microcontrollers with XLP Technology

FIGURE 8-2:
INTERRUPT LATENCY
PIC16(L)F1847
OSC1
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 Q1 Q2 Q3 Q4
CLKOUT
Interrupt
GIE
Interrupt Sampled
during Q1
PC
PC-1
PC
Execute 1 Cycle Instruction at PC
PC+1
Inst(PC)
NOP
0004h
NOP
0005h
Inst(0004h)
Interrupt
GIE
PC
PC-1
PC
Execute 2 Cycle Instruction at PC
PC+1/FSR
ADDR
Inst(PC)
New PC/
PC+1
NOP
0004h
NOP
0005h
Inst(0004h)
Interrupt
GIE
PC
PC-1
PC
FSR ADDR
Execute 3 Cycle Instruction at PC
INST(PC)
Interrupt
GIE
PC+1
NOP
PC
PC-1
PC
FSR ADDR
Execute 3 Cycle Instruction at PC
INST(PC)
PC+1
NOP
PC+2
NOP
0004h
NOP
0005h
Inst(0004h) Inst(0005h)
PC+2
NOP
NOP
0004h
NOP
0005h
Inst(0004h)
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Preliminary
DS40001453D-page 85