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參數(shù)資料
| 型號(hào)： | 7c1199 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | 32K x 8 Static RAM(32K x 8 靜態(tài) RAM) |
| 中文描述： | 32K的× 8靜態(tài)RAM（32K的× 8靜態(tài)RAM）的 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大?。?/td> | 135K |
| 代理商： | 7C1199 |
PRELIMINARY
32K x 8 Static RAM
CY7C1199
Cypress Semiconductor Corporation
3901 North First Street
San Jose
CA 95134
408-943-2600
September 27, 1995
Features
High speed
—15 ns t
AA
Single 5V power supply with 3.3V-compatible I/Os
—V
OH
max. of 3.435V
Fast t
DOE
Functional Description
The CY7C1199 is a high-performance CMOS static RAM or-
ganized as 32,768 words by 8 bits. The device operates with
a single 5V power supply but internally clamps the output volt-
age level to a maximum of 3.435V. The internal clamps allow
the CY7C1199 to interface to 3.3V processors (such as the
Pentium processor) without buffers or level translators.
Easy memory expansion is provided by an active LOW chip
enable (CE) and active LOW output enable (OE) and
three-state drivers. This device has an automatic power-down
feature, that reduces the power consumption significantly
when deselected.
An active LOW write enable signal (WE) controls the writ-
ing/reading operation of the memory. When CE and WE inputs
are both LOW, data on the eight data input/output pins (I/O
0
through I/O
7
) is written into the memory location addressed by
the address present on the address pins (A
0
through A
14
).
Reading the device is accomplished by selecting the device
and enabling the outputs, CE and OE active LOW, while WE
remains inactive or HIGH. Under these conditions, the con-
tents of the location addressed by the information on address
pins is present on the eight data input/output pins.
The input/output pins remain in a high-impedance state unless
the chip is selected, outputs are enabled, and write enable
(WE) is HIGH.
The CY7C1199 is available in standard 300-mil-wide SOJ
packages.
Logic Block Diagram
Pin Configurations
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
A
9
COLUMN
DECODER
R
S
INPUT BUFFER
POWER
DOWN
WE
OE
I/O
0
CE
I/O
1
I/O
2
I/O
3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
20
19
18
17
21
24
23
22
Top View
SOJ
25
28
27
26
GND
A
6
A
7
A
8
A
9
A
10
A
11
A
12
A
13
A
14
I/O
0
I/O
1
I/O
2
WE
A
4
A
3
A
2
A
1
OE
A
0
V
CC
I/O
7
I/O
6
I/O
5
I/O
4
I/O
3
A
5
CE
1024 x 32 x 8
ARRAY
I/O
7
I/O
6
I/O
5
I/O
4
A
0
A
1
A
1
A
1
A
1
A
1
C1199–1
C1199–2
Selection Guide
7C1199–15
15
130
30
7C1199–20
20
125
30
Maximum Access Time (ns)
Maximum Operating Current (mA)
Maximum Standby Current (mA)
Com’l
Com’l
Pentium is a trademark of Intel Corporation.
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