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Figure 6. External Program Memory Read Timing Waveforms
Figure 7. External Data Memory Read Cycle Waveforms
Figure 8. External Data Memory Write Cycle Waveforms
ALE
tPLPH
PSEN
tLHLL
tAVLL
tLLPL
tLLIV
PORT 0
PORT 2
tAVIV
A8 - A15
A8 - A15
A0 - A7
A0 - A7
INSTR IN
tLLAX
tPLAZ
tPXIZ
tPXIX
tPLIV
ALE
tLHLL
PORT 0
PORT 2
tAVDV
P2.0 - P2.7 OR A8 -A15 FROM DPH
A8 - A15 FROM PCH
A0 -A7 FROM RI OR DPL
INSTR IN
PSEN
RD
DATA IN
A0 - A7 FROM PCL
tAVWL
tLLAX
tWHLH
tLLDV
tLLWL
tRLRH
tAVLL
tRLAZ
tRLDV
tRHDZ
tRHDX
ALE
tLHLL
PORT 0
PORT 2
P2.0 - P2.7 OR A8 -A15 FROM DPH
A8 - A15 FROM PCH
A0 -A7 FROM RI OR DPL
INSTR IN
PSEN
WR
DATA OUT
A0 - A7 FROM PCL
tAVWL
tLLAX
tWHLH
tLLWL
tWLWH
tAVLL
tWHQX
tQVWX
tQVWH