Datasheet > 8P012SRV2304I15

8P012SRV2304I15

更新时间： 2023-08-15 00:00:00

品牌	Logo	应用领域
WEDC		静态存储器
页数	文件大小	规格书
10页	123K
描述
SRAM Card, 6MX16, 250ns, CMOS, CARD-68

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8P012SRV2304I15 数据手册

PCMCIA SRAM Memory Card

SRV20 Series

SRAM Memory Card 2MB through 16MB

General Description

Features

• High Performance SRAM memory Card

The WEDC SRAM Series (SRV20) memory cards

offer a high performance nonvolatile storage solution

for code and data storage, disk caching, and write

intensive mobile and embedded applications.

• Universal 3.3 to 5 Volt Supply allows for wider

compatibility between systems.

• Fast Access times: 150ns @ 3.3V – 5V

• x8/x16 PCMCIA standard interface

Packaged in PCMCIA type I or type II housing (type

II for cards with extended battery backup time), the

WEDC SRAM SRV20 series is based on high

density and super low power SRAM memory

devices, providing densities from 2MBytes to

16MBytes.

• Low Power CMOS technology provides very low

power and reliable data retention characteristics

- standby current < 100µA typical

• Rechargeable Lithium battery with recharge circuitry

- eliminates the need for replaceable batteries

- standby current during recharge typically < 2mA

- battery backup time

• 18 months - type I card

• 40 months - type II card

The SRV20 series of SRAM memory cards has a

universal wide power supply (3V to 5V) and operates

at speeds as high as 150ns. The cards are based on

advanced CMOS technology providing very low

power and reliable data retention characteristics.

WEDC’s SRAM cards contain a rechargeable

lithium battery and recharge circuitry, eliminating the

need for replaceable batteries found in many SRAM

cards.

typical based on 4MB

• Unlimited write cycles, no endurance issues

• Optional Features:

• 2KB EEPROM attribute memory containing CIS

• Optional Hardware Write Protect switch

WEDC’s standard cards are shipped with WEDC’s

SRAM Logo. Cards are also available with blank

housings (no Logo). The blank housings are available

in both a recessed (for label) and flat housing. Please

contact WEDC sales representative for further

information on Custom artwork.

• PC Card Standard Type I or Type II Form Factor

Block Diagram

16MB SRAM Card Shown

Address

[A1..A21]

buffer

SRAM

2M x 8

SRAM

2M x 8

SRAM

2M x 8

SRAM

2M x 8

[A22..A23]

/CSHi

SRAM

2M x 8

SRAM

2M x 8

+ +

decoder

and

/CSLi

/CS-A

CE1#

CE2#

WE#

OE#

REG#

/CSHi

SRAM

2M x 8

SRAM

2M x 8

logic

control

/RD

/WR

CTRL

/RD

/WR

[A1..A11]

/CS-A

/RD

/WR

ATTRIBUTE

MEMORY

Vcc

Write Prot

Switch

VS1

VS2

GND

CTRL

I/O BUFFER

[DO..D7]

[D8..D15]

[DO..D7]

[D8..D15]

Notes: 1. pull down resistor (min 100k)

2. pull up resistor (min 10k)

Vcc

Power Management

and

BVD1

BVD2

Battery Control

to internal

power

supply

Lithium Battery

November 2001 Rev. 1 - ECO #xxxx

PC Card Products

12 3 4 5 6 7...10

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