AT89C51CC03
External Program Memory
Characteristics
Table 118. Symbol Description
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 119. AC Parameters for a Fix Clock (F = 40 MHz)
Symbol
T
TLHLL
TAVLL
TLLAX
TLLIV
TLLPL
TPLPH
TPLIV
TPXIX
TPXIZ
TAVIV
TPLAZ
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
4182K–CAN–05/06
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