PIC12F1840 MICROCHIP [Microchip Technology], PIC12F1840 Datasheet - Page 81
PIC12F1840
Manufacturer Part Number
PIC12F1840
Description
8-Pin Flash Microcontrollers with nanoWatt XLP Technology
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC12F1840.pdf
(376 pages)
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FIGURE 8-4:
2011 Microchip Technology Inc.
INSTRUCTION FLOW
CLKOUT
INT pin
INTF
OSC1
GIE
Instruction
Executed
Note 1: INTF flag is sampled here (every Q1).
Instruction
Fetched
PC
2: Asynchronous interrupt latency = 3-5 T
3: CLKOUT not available in all oscillator modes.
4: For minimum width of INT pulse, refer to AC specifications in
5: INTF is enabled to be set any time during the Q4-Q1 cycles.
(3)
Latency is the same whether Inst (PC) is a single cycle or a 2-cycle instruction.
Q1
Inst (PC – 1)
Inst (PC)
(1)
INT PIN INTERRUPT TIMING
Q2
PC
Q3
(4)
Q4
(5)
Q1
Inst (PC + 1)
Inst (PC)
Q2
(1)
PC + 1
Q3
CY
Preliminary
. Synchronous latency = 3-4 T
Q4
Interrupt Latency
Q1
Dummy Cycle
Q2
PC + 1
—
Q3
Section 30.0 “Electrical
Q4
(2)
Q1
PIC12F/LF1840
Dummy Cycle
CY
Inst (0004h)
, where T
Q2
0004h
Q3
CY
Specifications”.
Q4
= instruction cycle time.
Q1
DS41441A-page 81
Inst (0005h)
Q2
Inst (0004h)
0005h
Q3
Q4
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