DS89C420_02 Datasheet, PDF (50/58 Pages) Maxim Integrated Products – Ultra-High-Speed Microcontroller

Figure 11. NON-PAGE MODE TIMING
DS89C420
XTAL1
ALE
PSEN
RD
WR
Port 0
Port 2
tCLCL
tAVLL2
tAVLL
tL L P L
tPXIX
tLLIV
tLLAX
LSB
MOVX
tPXIZ
MSB
tLHLL
tAVLL3
tLLAX3
tLLAX2
tP L P H
tPLIV
tRLRH
tAVDV0
tLLDV
tAVIV0
tRLDV
LSB
MOVX
LSB
DATA
tP L A Z
tRHDX
tAVWL0
tRHDZ
LSB
OPCODE
tWHLH
tLLWL
tWLWH
tWHQX
tQVWX
LSB
DATA
tAVWL2
tAVDV2
tAVIV2
MSB
MSB
MSB
MSB
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