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參數(shù)資料
| 型號(hào)： | WCMA2008U1B |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 256K x 8 Static RAM |
| 中文描述： | 256K × 8靜態(tài)RAM |
| 文件頁數(shù)： | 1/11頁 |
| 文件大?。?/td> | 144K |
| 代理商： | WCMA2008U1B |
256K x 8 Static RAM
WCMA2008U1B
WCMA2008U1B
Features
High Speed
—70ns availability
Voltage range
—2.7V–3.3V
Ultra low active power
—Typical active current: 1 mA @ f = 1MHz
—Typical active current: 7 mA @ f = f
max
(70ns speed)
Low standby power
Easy memory expansion with CE
1
,CE
2
,and OE features
Automatic power-down when deselected
CMOS for optimum speed/power
Functional Description
The WCMA2008U1B is a high-performance CMOS static
RAM organized as 256K words by 8 bits. This device features
advanced circuit design to provide ultra-low active current.
This is device is ideal for portable applications. The device
also has an automatic power-down feature that significantly
reduces power consumption by 80% when addresses are not
toggling. The device can be put into standby mode reducing
power consumption by more than 99% when deselected (CE
1
HIGH or CE
2
LOW).
Writing to the device is accomplished by taking Chip Enable
(CE
1
) and Write Enable (WE) inputs LOW and Chip Enable 2
(CE
2
) HIGH. Data on the eight I/O pins (I/O
0
through I/O
7
) is
then written into the location specified on the address pins (A
0
through A
17
).
Reading from the device is accomplished by taking Chip En-
able (CE
) and Output Enable (OE) LOW while forcing Write
Enable (WE) and Chip Enable 2 (CE
2
) HIGH. Under these
conditions, the contents of the memory location specified by
the address pins will appear on the I/O pins.
The eight input/output pins (I/O
through I/O
) are placed in a
high-impedance 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 and CE
2
HIGH and WE
LOW).
The WCMA2008U1B is available in a 36-ball FBGA package.
Logic Block Diagram
1
A
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
A
9
A
10
A
11
COLUMN
R
S
Data in Drivers
POWER
DOWN
WE
OE
I/O
0
I/O
1
I/O
2
I/O
3
ARRAY
I/O
7
I/O
6
I/O
5
I/O
4
A
0
A
1
A
1
A
1
CE
1
1
A
A
1
CE
2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| WCMA2008U1B-FF70 | 256K x 8 Static RAM |
| WCMA2008U1X | 256K x 8 Static RAM |
| WCMA2008U1X-FF70 | 256K x 8 Static RAM |
| WCMA4016U1X | 256K x 16 Static RAM |
| WD-C1602Q-6YLYC | SPECIFICATION FOR LCD MODULE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| WCMA2008U1B-FF70 | 制造商:Cypress Semiconductor 功能描述: |
| WCMA2008U1X | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:256K x 8 Static RAM |
| WCMA2008U1X-FF70 | 制造商:Cypress Semiconductor 功能描述: |
| WCMA2008U1X-FF70T | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| WCMA2008UIX-FF70 | 制造商:Cypress Semiconductor 功能描述: |
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