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參數資料
| 型號： | CY7C188 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | 32K x 9 Static RAM(32Kx9 靜態 RAM) |
| 中文描述： | 32K的× 9靜態存儲器（32Kx9靜態RAM）的 |
| 文件頁數： | 1/8頁 |
| 文件大小： | 145K |
| 代理商： | CY7C188 |
32K x 9 Static RAM
CY7C188
Cypress Semiconductor Corporation
3901 North First Street
San Jose
December 1992 - Revised May 1996
CA 95134
408-943-2600
Features
High speed
—15 ns
Automatic power-down when deselected
Low active power
—660 mW
Low standby power
—140 mW
CMOS for optimum speed/power
TTL-compatible inputs and outputs
Easy memory expansion with CE
1
, CE
2
, and OE
features
Functional Description
The CY7C188 is a high-performance CMOS static RAM orga-
nized as 32,768 words by 9 bits. Easy memory expansion is
provided by an active-LOW chip enable (CE
1
), an active-HIGH
chip enable (CE
2
), an active-LOW output enable (OE), and
three-state drivers. The device has an automatic power-down
feature that reduces power consumption by more than 75%
when deselected.
Writing to the device is accomplished by taking CE
1
and write
enable (WE) inputs LOW and CE
2
input HIGH. Data on the
nine I/O pins (I/O
o
– I/O
8
) is then written into the location spec-
ified on the address pins (A
0
– A
14
).
Reading from the device is accomplished by taking CE
1
and
OE LOW while forcing WE and CE
2
HIGH. Under these con-
ditions, the contents of the memory location specified by the
address pins will appear on the I/O pins.
The nine input/output pins (I/O
0
– I/O
8
) are placed in a high-im-
pedance state when the device is deselected (CE
1
HIGH or
CE
2
LOW), the outputs are disabled (OE HIGH), or during a
write operation (CE
1
LOW, CE
2
HIGH, and WE LOW).
The CY7C188 is available in standard 300-mil-wide SOJs.
Logic Block Diagram
Pin Configuration
C188–1
CE
2
WE
OE
I/O
0
CE
1
I/O
1
I/O
2
I/O
3
I/O
7
I/O
6
I/O
5
I/O
4
I/O
8
I/O
4
A
1
A
2
A
3
A
4
A
5
A
6
COLUMN
DECODER
R
S
INPUT BUFFER
POWER
DOWN
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
DIP/SOJ
25
28
27
26
A
8
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
WE
A
13
A
9
A
10
V
CC
A
14
CE
2
NC
NC
I/O
0
I/O
1
I/O
2
I/O
3
CE
1
I/O
8
OE
A
12
A
11
32K x 9
ARRAY
A
0
A
1
A
1
A
1
A
1
A
1
29
32
31
30
GND
I/O
5
I/O
6
I/O
7
A
8
A
9
A
7
C188–2
Selection Guide
7C188–15
15
120
35
7C188–20
20
170
35
7C188–25
25
165
35
7C188–35
35
160
30
Maximum Access Time (ns)
Maximum Operating Current (mA) Commercial
Maximum Standby Current (mA)
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相關代理商/技術參數 |
參數描述 |
|---|---|
| CY7C188-15VC | 制造商:Cypress Semiconductor 功能描述: |
| CY7C188-15VCT | 制造商:Cypress Semiconductor 功能描述: |
| CY7C188-20VC | 功能描述:32KX9 300 MIL ASYNCHRONOUS RAM RoHS:否 類別:集成電路 (IC) >> 存儲器 系列:- 標準包裝:1,000 系列:- 格式 - 存儲器:EEPROMs - 串行 存儲器類型:EEPROM 存儲容量:4K (512 x 8) 速度:400kHz 接口:I²C，2 線串口 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 封裝/外殼:8-SOIC（0.173"，4.40mm 寬） 供應商設備封裝:8-MFP 包裝:帶卷 (TR) |
| CY7C188-20VCT | 制造商:Rochester Electronics LLC 功能描述:256K (32K X 9)- FAST ASYNCH SRAM - Tape and Reel |
| CY7C188-25VC | 制造商:Rochester Electronics LLC 功能描述:256K (32K X 9)- FAST ASYNCH SRAM - Bulk 制造商:Cypress Semiconductor 功能描述: |
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