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IS89C52 Просмотр технического описания (PDF) - Integrated Silicon Solution

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IS89C52 Datasheet PDF : 50 Pages
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IS89C52
TIMING WAVEFORMS
ALE
PSEN
PORT 0
PORT 2
tLHLL
tLLPL
tAVLL
tPLPH
tPLIV
tLLAX
tPLAZ
tPXIX
A7-A0
INSTR IN
tLLIV
tAVIV
A15-A8
tPXIZ
A7-A0
A15-A8
Figure 35. External Program Memory Read Cycle
ISSI ®
ALE
PSEN
RD
PORT 0
PORT 2
tLLDV
tLLWL
tWHLH
tRLRH
tAVLL
tRLAZ
tLLAX
tRLDV tRHDX
A7-A0 FROM RI OR DPL
DATA IN
tAVWL
tAVDV
A15-A8 FROM DPH
tRHDZ
A7-A0 FROM PCL
INSTR IN
A15-A8 FROM PCH
Figure 36. External Data Memory Read Cycle
48
Integrated Silicon Solution, Inc. — 1-800-379-4774
MC013-1C
11/21/98

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