參數(shù)資料
型號: KSZ8895RQ
廠商: Micrel Inc
文件頁數(shù): 101/119頁
文件大?。?/td> 0K
描述: IC 10/100-T 5 PORT SW 128PQFP
標準包裝: 66
系列: *
PIC16(L)F1782/3
DS41579C-page 82
Preliminary
2011-2012 Microchip Technology Inc.
FIGURE 8-3:
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
0004h
0005h
Inst (0004h)
Inst (0005h)
Forced NOP
Inst (PC)
Inst (PC + 1)
Inst (PC – 1)
Inst (0004h)
Forced NOP
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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