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PIC16F1847 bảng dữ liệu(PDF) 87 Page - Microchip Technology

tên linh kiện PIC16F1847
Giải thích chi tiết về linh kiện  18/20/28-Pin Flash Microcontrollers with nanoWatt XLP Technology
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nhà sản xuất  MICROCHIP [Microchip Technology]
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PIC16F1847 bảng dữ liệu(HTML) 87 Page - Microchip Technology

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Preliminary
DS41453B-page 87
PIC16(L)F1847
FIGURE 8-4:
INT PIN INTERRUPT TIMING
Q2
Q1
Q3 Q4
Q2
Q1
Q3 Q4
Q2
Q1
Q3 Q4
Q2
Q1
Q3 Q4
Q2
Q1
Q3 Q4
OSC1
CLKOUT
INT pin
INTF
GIE
INSTRUCTION FLOW
PC
Instruction
Fetched
Instruction
Executed
Interrupt Latency
PC
PC + 1
PC + 1
0004h
0005h
Inst (0004h)
Inst (0005h)
Dummy Cycle
Inst (PC)
Inst (PC + 1)
Inst (PC – 1)
Inst (0004h)
Dummy Cycle
Inst (PC)
—
Note 1:
INTF flag is sampled here (every Q1).
2:
Asynchronous interrupt latency = 3-5 TCY. Synchronous latency = 3-4 TCY, where TCY = instruction cycle time.
Latency is the same whether Inst (PC) is a single cycle or a 2-cycle instruction.
3:
CLKOUT not available in all oscillator modes.
4:
For minimum width of INT pulse, refer to AC specifications in Section 30.0 “Electrical Specifications”.
5:
INTF is enabled to be set any time during the Q4-Q1 cycles.
(1)
(2)
(3)
(4)
(5)
(1)



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