DS89C420 Datasheet, PDF (50/59 Pages) Dallas Semiconductor – Ultra-High-Speed Microcontroller

Figure 12. Non-Page Mode Timing
DS89C420
XTAL1
ALE
PSEN
RD
WR
Port 0
Port 2
tCLCL
tAVLL2
tAVLL
tLLPL
tPXIX
tLLIV
tLLAX
LSB
MOVX
tPXIZ
MSB
tLHLL
tAVLL3
tLLAX3
tLLAX2
tPLPH
tPLIV
tRLRH
tAVDV0
tLLDV
tAVIV0
tRLDV
LSB
MOVX
LSB
DATA
tPLAZ
tRHDX
tRHDZ
LSB
tAVWL0
OPCODE
tWHLH
tLLWL
tWLWH
tWHQX
tQVWX
LSB
DATA
tAVWL2
MSB
tAVDV2
MSB
tAVIV2
MSB
MSB
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