DS89C420 Datasheet, PDF (47/59 Pages) Dallas Semiconductor – Ultra-High-Speed Microcontroller

DS89C420
PARAMETER
PSEN Low to Valid
Instruction In
Input Instruction Hold
After PSEN
Input Instruction Float
After PSEN
Port 0 Address to Valid
Instruction In
Port 2 Address to Valid
Instruction In
PSEN Low to Port 0
Address Float
RD Pulse Width (P3.7)
WR Pulse Width (P3.6)
RD (P3.7) Low to Valid
Data In
SYMBOL
tPLIV
1 CYCLE
PAGE MODE 1
MIN
MAX
tCLCL - 18
2 CYCLE
PAGE MODE 1
MIN
MAX
tCLCL - 18
4 CYCLE
PAGE MODE 1
MIN
MAX
2tCLCL - 18
PAGE MODE 2
MIN
MAX
tCLCL - 18
NON-PAGE MODE
MIN
MAX
UNITS NOTES
2tCLCL - 18
ns
tPXIX
0
0
0
0
0
ns
tPXIZ
tCLCL - 5
tCLCL - 5
ns
tAVIV0
1.5tCLCL - 20
3tCLCL - 20
ns
tAVIV2
tCLCL - 18
1.5tCLCL - 18
2.5tCLCL - 18
3tCLCL - 20
3.5tCLCL - 20
ns
tPLAZ
0
0
ns
tRLRH
tCLCL - 5 +
tSTC1
tCLCL - 5 +
tSTC1
2tCLCL - 5 +
tSTC1
2tCLCL - 5 +
tSTC1
2tCLCL - 5 +
tSTC1
ns
2
tWLWH
tCLCL - 5 +
tSTC1
tCLCL - 5 +
tSTC1
2tCLCL - 5 +
tSTC1
2tCLCL - 5 +
tSTC1
2tCLCL - 5 +
tSTC1
ns
2
tRLDV
tCLCL - 15 +
tSTC1
tCLCL - 15 +
tSTC1
2tCLCL - 15 +
tSTC1
2tCLCL - 15 +
tSTC1
2tCLCL - 15 +
ns
2
tSTC1
Data Hold After RD (P3.7)
tRHDX
0
0
0
0
0
ns
Data Float After RD (P3.7)
MOVX ALE Low to Input
Data Valid
Port 0 Address to Valid
Data In
tRHDZ
tLLDV
tAVDV0
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tCLCL - 5
2.5tCLCL - 20
+ tSTC1
3tCLCL - 20 +
tSTC1
tCLCL - 5
ns
2.5tCLCL - 20
ns
2
+ tSTC1
3tCLCL - 20 +
ns
2
tSTC1