參數(shù)資料
型號: IDT7009
廠商: Integrated Device Technology, Inc.
英文描述: HIGH-SPEED 128K x 8 DUAL-PORT STATIC RAM
中文描述: 高速128K的× 8雙端口靜態(tài)RAM
文件頁數(shù): 13/17頁
文件大小: 143K
代理商: IDT7009
6.42
IDT7009L
High-Speed 128K x 8 Dual-Port Static RAM Industrial and Commercial Temperature Ranges
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NOTES:
1. All timng is the same for left and right ports. Port
A
may be either the left or right port. Port
B
is the port opposite fromport
A
.
2. See Interrupt Truth Table.
3. Timng depends on which enable signal (
CE
or R/
W
) is asserted last.
4. Timng depends on which enable signal (
CE
or R/
W
) is de-asserted first.
5. Refer to Chip Enable Truth Table.
NOTES:
1. Assumes
BUSY
L
=
BUSY
R
=V
IH
.
2. If
BUSY
L
= V
IL
, then no change.
3. If
BUSY
R
= V
IL
, then no change.
4.
INT
L
and
INT
R
must be initialized at power-up.
5. Refer to Chip Enable Truth Table.
4839 drw 15
ADDR
"A"
INTERRUPT SET ADDRESS
CE
"A"
R/
W
"A"
t
AS
t
WC
t
WR
(3)
(4)
t
INS
(3)
INT
"B"
(2)
4839 drw 16
ADDR
"B"
INTERRUPT CLEAR ADDRESS
CE
"B"
OE
"B"
t
AS
t
RC
(3)
t
INR
(3)
INT
"B"
(2)
Left Port
Right Port
Function
R/
W
L
CE
L
OE
L
A
16L
-A
0L
INT
L
R/
W
R
CE
R
OE
R
A
16R
-A
0R
INT
R
L
L
X
1FFFF
X
X
X
X
X
L
(2)
Set Right
INT
R
Flag
X
X
X
X
X
X
L
L
1FFFF
H
(3
)
Reset Right
INT
R
Flag
X
X
X
X
L
(3)
L
L
X
1FFFE
X
Set Left
INT
L
Flag
X
L
L
1FFFE
H
(2)
X
X
X
X
X
Reset Left
INT
L
Flag
4839 tbl 16
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