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參數(shù)資料
| 型號： | CY62146DV30L |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | 4-Mbit (256K x 16) Static RAM |
| 中文描述： | 4兆位（256K × 16）靜態(tài)RAM |
| 文件頁數(shù)： | 1/11頁 |
| 文件大小： | 406K |
| 代理商： | CY62146DV30L |
4-Mbit (256K x 16) Static RAM
CY62146DV30
Cypress Semiconductor Corporation
Document #: 38-05339 Rev. *A
3901 North First Street
San Jose
,
CA 95134
408-943-2600
Revised February 2, 2005
Features
Very high speed: 45 ns
Wide voltage range: 2.20V–3.60V
Pin-compatible with CY62146CV30
Ultra-low active power
— Typical active current: 1.5 mA @ f = 1 MHz
— Typical active current: 8 mA @ f = f
max
Ultra low standby power
Easy memory expansion with CE, and OE features
Automatic power-down when deselected
CMOS for optimum speed/power
Packages offered 48-ball BGA and 44-pin TSOPII
Also available in Lead-free packages
Functional Description
[1]
The CY62146DV30 is a high-performance CMOS static RAM
organized as 256K words by 16 bits. This device features ad-
vanced circuit design to provide ultra-low active current. This
is ideal for providing More Battery Life (MoBL
) in portable
applications such as cellular telephones. The device also has
an automatic power-down feature that significantly reduces
power consumption. The device can also be put into standby
mode reducing power consumption by more than 99% when
deselected (CE HIGH). The input/output pins (I/O
0
through
I/O
15
) are placed in a high-impedance state when: deselected
(CE HIGH), outputs are disabled (OE HIGH), both Byte High
Enable and Byte Low Enable are disabled (BHE, BLE HIGH),
or during a write operation (CE LOW and WE LOW).
Writing to the device is accomplished by taking Chip Enable
(CE) and Write Enable (WE) inputs LOW. If Byte Low Enable
(BLE) is LOW, then data from I/O pins (I/O
0
through I/O
7
), is
written into the location specified on the address pins (A
0
through A
17
). If Byte High Enable (BHE) is LOW, then data
from I/O pins (I/O
8
through I/O
15
) is written into the location
specified on the address pins (A
0
through A
17
).
Reading from the device is accomplished by taking Chip
Enable (CE) and Output Enable (OE) LOW while forcing the
Write Enable (WE) HIGH. If Byte Low Enable (BLE) is LOW,
then data from the memory location specified by the address
pins will appear on I/O
0
to I/O
7
. If Byte High Enable (BHE) is
LOW, then data from memory will appear on I/O
8
to I/O
15
. See
the truth table at the back of this data sheet for a complete
description of read and write modes.
The CY62146DV30 is available in a 48-ball VFBGA, 44-pin
TSOPII packages.
Note:
1. For best practice recommendations, please refer to the Cypress application note “System Design Guidelines” on http://www.cypress.com.
Logic Block Diagram
256K x 16
RAM Array
I/O
0
–I/O
7
R
A
8
A
7
A
6
A
5
A
4
A
3
A
2
A
1
COLUMN DECODER
A
1
A
1
A
1
A
1
A
1
S
DATA IN DRIVERS
OE
BLE
I/O
8
–I/O
15
CE
WE
BHE
A
1
A
0
A
1
A
9
A
10
相關PDF資料 |
PDF描述 |
|---|---|
| CY62146DV30L-55BVI | 4-Mbit (256K x 16) Static RAM |
| CY62146DV30L-55BVXI | 4-Mbit (256K x 16) Static RAM |
| CY62146DV30L-70BVI | 4-Mbit (256K x 16) Static RAM |
| CY62146DV30L-70BVXI | 4-Mbit (256K x 16) Static RAM |
| CY62146DV30LL | 4-Mbit (256K x 16) Static RAM |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CY62146DV30L-55BVI | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:4-Mbit (256K x 16) Static RAM |
| CY62146DV30L55BVXI | 制造商:Cypress Semiconductor 功能描述: |
| CY62146DV30L-55BVXI | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:4-Mbit (256K x 16) Static RAM |
| CY62146DV30L-55ZSXI | 制造商:Rochester Electronics LLC 功能描述: 制造商:Cypress Semiconductor 功能描述: |
| CY62146DV30L-70BVI | 制造商:Rochester Electronics LLC 功能描述:SLOW 3.0V SUPER LOW POWER 256K X 16 SRAM - Bulk |
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