T89C51RD2-3CSCM View Datasheet(PDF) - Atmel Corporation
Part Name
Description
Manufacturer
T89C51RD2-3CSCM Datasheet PDF : 104 Pages
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External Program Memory
Characteristics
Symbol
T
TLHLL
TAVLL
TLLAX
TLLIV
TLLPL
TPLPH
TPLIV
TPXIX
TPXIZ
TAVIV
TPLAZ
Parameter
Oscillator clock period
ALE pulse width
Address Valid to ALE
Address Hold After ALE
ALE to Valid Instruction In
ALE to PSEN
PSEN Pulse Width
PSEN to Valid Instruction In
Input Instruction Hold After PSEN
Input Instruction Float After PSEN
Address to Valid Instruction In
PSEN Low to Address Float
Table 46. AC Parameters for a Fix Clock
Symbol
-M
Min
T
25
TLHLL
40
TAVLL
10
TLLAX
10
TLLIV
TLLPL
15
TPLPH
55
TPLIV
TPXIX
0
TPXIZ
TAVIV
TPLAZ
Max
70
35
18
85
10
-L
Min
Max
25
40
10
10
70
15
55
35
0
18
85
10
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
86 T89C51RD2
4243G–8051–05/03
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