PIC12CE67 Microchip Technology, PIC12CE67 Datasheet - Page 55
PIC12CE67
Manufacturer Part Number
PIC12CE67
Description
8-Pin/ 8-Bit CMOS Microcontroller with A/D Converter and EEPROM Data Memory
Manufacturer
Microchip Technology
Datasheet
1.PIC12CE67.pdf
(116 pages)
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FIGURE 9-15: INT PIN INTERRUPT TIMING
1998 Microchip Technology Inc.
INSTRUCTION FLOW
Note 1: INTF flag is sampled here (every Q1).
GIE bit
(INTCON<7>)
INTF flag
(INTCON<1>)
CLKOUT
INT pin
OSC1
Instruction
executed
Instruction
fetched
PC
2: Interrupt latency = 3-4 Tcy where Tcy = instruction cycle time.
3: CLKOUT is available only in INTRC and EXTRC oscillator modes.
4: For minimum width of INT pulse, refer to AC specs.
5: INTF is enabled to be set anytime during the Q4-Q1 cycles.
Latency is the same whether Inst (PC) is a single cycle or a 2-cycle instruction.
3
Q1
Inst (PC-1)
Inst (PC)
1
Q2
PC
Q3
4
Q4
5
Q1
Inst (PC+1)
Inst (PC)
Q2
1
PC+1
Q3
Preliminary
Q4
Interrupt Latency
Q1
Dummy Cycle
Q2
PC+1
—
Q3
Q4
2
Q1
Dummy Cycle
Inst (0004h)
Q2
0004h
PIC12CE67X
Q3
Q4
Q1
DS40181B-page 55
Inst (0005h)
Q2
Inst (0004h)
0005h
Q3
Q4