參數(shù)資料
型號(hào): IDT7198L
廠(chǎng)商: Integrated Device Technology, Inc.
英文描述: Current-Mode PWM Controller 8-SOIC -40 to 85
中文描述: 64K的的CMOS靜態(tài)RAM(16K的× 4位)新增芯片選擇和輸出控制
文件頁(yè)數(shù): 2/8頁(yè)
文件大小: 80K
代理商: IDT7198L
6.4
2
IDT7198S/L
CMOS STATIC RAM 64K (16K x 4-BIT) Added Chip Select and Output Enable Controls
MILITARY TEMPERATURE RANGE
MEMORY CONTROL
The IDT7198 64K high-speed CMOS static RAM incorpo-
rates two additional memory control features (an extra chip
select and an output enable pin) which offer additional ben-
efits in many system memory applications.
Both chip selects, Chip Select 1 (
CS
1
) and Chip Select 2
(
CS
2
), must be LOW to select the memory. If either chip select
is pulled HIGH, the memory will be deselected and remain in
the standby mode. This dual chip select feature (
CS
1
,
CS
2
)
also brings the convenience of improved system speeds to the
large memory designer by reducing the external logic required
to perform decoding.
PIN DESCRIPTIONS
Name
Description
A
0
–A
13
Address Inputs
CS
1
Chip Select 1
CS
2
Chip Select 2
WE
Write Enable
OE
Output Enable
I/O
0–
I/O
3
Data I/O
V
CC
Power
GND
Ground
2985 tbl 01
TRUTH TABLE
(1)
Mode
CS
1
CS
2
WE
OE
I/O
Power
Standby
H
X
X
X
High-Z
Standby
Standby
X
H
X
X
High-Z
Standby
Read
L
L
H
L
D
OUT
Active
Write
L
L
L
X
D
IN
Active
Read
L
L
H
H
High-Z
Active
NOTE:
1. H = V
IH
, L = V
IL
, X = don't care.
2985 tbl 02
5
6
7
8
9
10
11
12
L28-2
26
25
24
23
22
21
20
19
18
13 14 15 16 17
3
2
1
28 27
INDEX
A
5
A
6
A
7
A
8
A
12
A
11
A
10
A
9
I/O
3
I/O
2
I/O
1
CS
A
3
A
4
2985 drw 03
4
1
O
G
C
W
A
2
A
1
A
V
C
N
N
N
A
13
NC
I
0
LCC
TOP VIEW
PIN CONFIGURATIONS
2985 drw 02
5
6
7
8
9
10
11
12
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
CS
OE
GND
1
2
3
4
24
23
22
21
20
19
18
17
16
15
16
15
D24-1
E24-1
V
CC
A
13
WE
A
12
A
11
A
10
A
9
CS
2
I/O
3
I/O
2
I/O
1
I/O
0
1
DIP/SOJ/CERPACK
TOP VIEW
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
Rating
V
TERM
Terminal Voltage
with Respect to GND
T
A
Operating Temperature
T
BIAS
Temperature
Under Bias
T
STG
Storage Temperature
P
T
Power Dissipation
I
OUT
DC Output Current
Mil.
Unit
V
–0.5 to +7.0
–55 to +125
–65 to +135
°
C
°
C
–65 to +150
1.0
50
°
C
W
mA
NOTE:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM
RATINGS may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or any other
conditions above those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating condi-
tions for extended periods may affect reliability.
2985 tbl 03
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