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參數資料
| 型號： | CY62148 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | 512K x 8 Static RAM(512K x 8 靜態RAM) |
| 中文描述： | 為512k × 8靜態存儲器（為512k × 8靜態RAM）的 |
| 文件頁數： | 1/9頁 |
| 文件大?。?/td> | 157K |
| 代理商： | CY62148 |
512K x 8 Static RAM
CY62148
PRELIMINARY
Cypress Semiconductor Corporation
3901 North First Street
San Jose
CA 95134
408-943-2600
June 30, 1998
Features
4.5V–5.5V operation
CMOS for optimum speed/power
Low active power
—660 mW (max.)
Low standby power (L version)
—2.75 mW (max.)
Automatic power-down when deselected
TTL-compatible inputs and outputs
Easy memory expansion with CE
and OE options
Functional Description
The CY62148 is a high-performance CMOS static RAM orga-
nized as 524,288 words by 8 bits. Easy memory expansion is
provided by an active LOW Chip Enable (CE), an active LOW
Output Enable (OE), and three-state drivers. This device has
an automatic power-down feature that reduces power con-
sumption by more than 99% when deselected.
Writing to the device is accomplished by taking Chip Enable
(CE) and Write Enable (WE) inputs LOW. Data on the eight I/O
pins (I/O
0
through I/O
7
) is then written into the location speci-
fied on the address pins (A
0
through A
18
).
Reading from the device is accomplished by taking Chip En-
able (CE) and Output Enable (OE) LOW while forcing Write
Enable (WE) HIGH for read. Under these conditions, the con-
tents of the memory location specified by the address pins will
appear on the I/O pins.
The eight input/output pins (I/O
0
through I/O
7
) are placed in a
high-impedance state when the device is deselected (CE
HIGH), the outputs are disabled (OE HIGH), or during a write
operation (CE LOW, and WE LOW).
The CY62148 is available in a standard 32 pin 450-mil-wide
body width SOIC and 32 pin TSOP II packages.
1
A
1
A
Logic Block Diagram
Pin Configuration
A
1
A
4
A
5
A
6
A
7
A
12
A
14
A
16
A
17
COLUMN
DECODER
R
S
INPUT BUFFER
POWER
DOWN
WE
OE
I/O
0
I/O
1
I/O
2
I/O
3
512 x 256 x 8
ARRAY
I/O
7
I/O
6
I/O
5
I/O
4
A
0
A
2
A
1
A
3
CE
A
8
62148-1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
19
18
20
24
23
22
21
25
28
27
26
Top View
SOIC
TSOP II
29
32
31
30
16
17
GND
A
16
A
14
A
12
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
WE
A
13
A
8
A
9
A
11
V
CC
A
15
A
18
I/O
7
I/O
6
I/O
5
I/O
4
I/O
3
I/O
0
I/O
1
I/O
2
CE
OE
A
10
A
9
A
1
A
17
A
1
62148-2
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| CY62157DV30 | 8-Mbit (512K x 16) MoBL Static RAM(8-Mb(512K x 16) MoBL靜態RAM) |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| CY62148-100SC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 SRAM |
| CY62148-100SI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 SRAM |
| CY62148-100ZSC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 SRAM |
| CY62148-100ZSI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 SRAM |
| CY62148-55 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:512K x 8 Static RAM |
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