參數(shù)資料
型號(hào): X68C75PM
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(yè)數(shù): 20/26頁(yè)
文件大小: 123K
代理商: X68C75PM
20
X68C75 SLIC
E
2
Port Read Diagram
PORT READ TIMING
No.
Symbol
1
t
SVSX
2
3
4
5
6
PW
ASH
7
t
RXIX
8
9
10
11
t
ACCE
12
t
RWS
13
t
RWH
Parameter
Min.
80
20
30
Max.
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
2899 PGM T12.1
Strobe Pulse Width
Data Port Setup
Data Port Hold Time
Interrupt Request to Strobe
IRQ
to AS
AS Pulse Width
E to
IRQ
High
Address setup time
Address hold time
AS to E High
E Access Time
R/
W
Setup Time
R/
W
Hold time
t
IS
t
IH
t
SVIV
t
IAD
50
0
80
30
20
30
30
t
ASL
t
AHL
t
ASE
120
30
10
STRA/STRB
*
PA7:0/PB7:0
IRQ
2899 ILL F26.2
AS
R/W
A15–A8
E
AD7–AD0
1
3
2
4
7
6
5
8
9
10
8
9
11
12
13
INTERRUPT
RECOGNIZED
PORT
ADDRESS
A7-A0
DATA
VALID
NOTE: *Figure shows active HIGH strobes.
DATA VALID
(IN)
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