at89c51ac3-s3sim ATMEL Corporation, at89c51ac3-s3sim Datasheet - Page 125

• Manufacturer Part Number: at89c51ac3-s3sim
• Description: At89c51ac3 Enhanced 8-bit Microcontroller With 64kb Flash Memory
• Manufacturer: ATMEL Corporation

External Program Memory
Characteristics
4383D–8051–02/08
Table 73. Symbol Description
Table 74. AC Parameters for a Fix Clock (F = 40 MHz)
Symbol
T
T
T
T
T
T
T
T
T
T
T
PLPH
LHLL
AVLL
LLAX
LLPL
PLAZ
PLIV
PXIX
PXIZ
AVIV
LLIV
T
Symbol
T
T
T
T
T
T
T
T
T
T
T
PLPH
LHLL
AVLL
LLAX
LLPL
PLAZ
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
PLIV
PXIX
PXIZ
AVIV
LLIV
T
Min
25
40
10
10
15
55
0
Max
70
35
18
85
10
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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