81C51SL View Datasheet(PDF) - Intel
Part Name
Description
Manufacturer
81C51SL Datasheet PDF : 23 Pages
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8XC51SL LOW VOLTAGE 8XC51SL
EXTERNAL MEMORY TIMING
TCLCL e 1 Clock Period All Outputs Loaded with 50 pF
Symbol
1 TCLCL
TLHLL
TAVLL
TLLAX
TLLIV
TLLPL
TPLPH
TPLIV
TPXIX
TPXIZ
TAVIV
TPLAZ
TRLRH
TWLWH
TRLDV
TRHDX
TRHDZ
TLLDV
TAVDV
TLLWL
TAVWL
TQVWX
TWHQX
TQVWH
TRLAZ
TWHLH
Parameter
Oscillator Frequency
ALE Pulse Width
Address Valid to ALE Low
Address Hold after ALE Low
ALE Low to Valid Instruction In
ALE Low to PSENL Low
PSENL Pulse Width
PSENL Low to Valid Instruction In
Input Instruction Hold after PSENL High
Input Instruction Float after PSENL High
Address to Valid Instruction In
PSENL Low to Address Float
P37 RDL Pulse Width
P36 WRL Pulse Width
P37RDL Low to Valid Data In
Data Hold after P37 RDL
Data Float after P37 RDL
ALE Low to Valid Data In
Address to Valid Data In
ALE Low to P37 RDL or P36 WRL Low
Address Valid to P36 WRL Low
Data Valid before P36 WRL
Data Hold after P36 WRL
Data Valid to P36 WRL High
P37 RDL Low to Address Float
P37 RDL or P36 WRL High to ALE High
Min
2
2TCLCLb40
TCLCLb40
TCLCLb30
TCLCLb30
3TCLCLb45
0
6TCLCLb50
6TCLCLb50
0
3TCLCLb25
4TCLCLb50
TCLCLb25
TCLCLb25
7TCLCLb50
TCLCLb25
Max
16
4TCLCLb100
3TCLCLb105
TCLCLb25
5TCLCLb105
10
5TCLCLb100
2TCLCLb50
8TCLCLb100
9TCLCLb100
3TCLCLa25
0
TCLCLa25
Units
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
14
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