參數(shù)資料
型號: X88C75LM
英文描述: Port Expander and E2 Memory
中文描述: 端口擴(kuò)展和E2內(nèi)存
文件頁數(shù): 22/27頁
文件大?。?/td> 125K
代理商: X88C75LM
X88C75 SLIC
E
2
22
LAM (Latch Address Mode) Diagram
LAM TIMING
No.
1
2
3
4
Symbol
t
LHLL
t
AVLL
t
LLAX
t
POS
Parameter
Min.
80
20
30
Max.
Units
ns
ns
ns
ns
2887 PGM T15
ALE Pulse Width
Address Setup Time
Address Hold Time
Port Output Setup Time
20
A15–A8
ALE
AD7–AD0
PB7:0
2887 ILL F31
2
1
3
2
3
4
ADDRESS
A15-A8
ADDRESS
A7-A0
DATA VALID
ADDRESS A7–A0
SYMBOL TABLE
WAVEFORM
INPUTS
OUTPUTS
Must be
steady
Will be
steady
May change
from LOW
to HIGH
Will change
from LOW
to HIGH
May change
from HIGH
to LOW
Will change
from HIGH
to LOW
Don’t Care:
Changes
Allowed
N/A
Changing:
State Not
Known
Center Line
is High
Impedance
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