參數(shù)資料
型號: X88C75P
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): 20/27頁
文件大?。?/td> 125K
代理商: X88C75P
X88C75 SLIC
E
2
20
Port Read Diagram
PORT READ TIMING
No.
Symbol
1
t
SVSX
2
t
DVSV
3
t
SVDX
4
t
SVIV
5
t
IAD
6
t
LHLL
7
t
RXIX
8
t
AVLL
9
t
LLAX
10
t
LLWL
11
t
RLDV
Parameter
Min.
80
20
30
Max.
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
2887 PGM T13.2
Strobe Pulse Width
Data Port Setup
Data Port Hold Time
Interrupt Request to Strobe
IRQ
to ALE
ALE Pulse Width
RD
to
IRQ
Address setup time
Address hold time
ALE to
RD
LOW
RD
Access Time
50
0
80
30
20
30
30
120
STRA/STRB* (IN)
PA7:0/PB7:0
IRQ
2887 ILL F26.1
ALE
A15–A8
RD/PSEN
AD7–AD0
1
3
2
4
7
6
5
8
9
10
8
9
11
INTERRUPT
RECOGNIZED
PORT
ADDRESS
A7-A0
DATA
VALID
NOTE: *Figure shows active HIGH strobes.
DATA VALID
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