Table 95, Table 96 – Rainbow Electronics T89C51CC01 User Manual
Page 137
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137
T89C51CC01
Rev. D – 17-Dec-01
19.4.2 External Program
Memory Characteristics
Table 95. Symbol Description
Table 96. AC Parameters for a Fix Clock (F= 40 MHz)
Symbol
Parameter
T
Oscillator clock period
T
LHLL
ALE pulse width
T
AVLL
Address Valid to ALE
T
LLAX
Address Hold After ALE
T
LLIV
ALE to Valid Instruction In
T
LLPL
ALE to PSEN
T
PLPH
PSEN Pulse Width
T
PLIV
PSEN to Valid Instruction In
T
PXIX
Input Instruction Hold After PSEN
T
PXIZ
Input Instruction Float After PSEN
T
AVIV
Address to Valid Instruction In
T
PLAZ
PSEN Low to Address Float
Symbol
Min
Max
Units
T
25
ns
T
LHLL
40
ns
T
AVLL
10
ns
T
LLAX
10
ns
T
LLIV
70
ns
T
LLPL
15
ns
T
PLPH
55
ns
T
PLIV
35
ns
T
PXIX
0
ns
T
PXIZ
18
ns
T
AVIV
85
ns
T
PLAZ
10
ns
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