LY62W2568RL-70LL datasheet(2/16 Pages) LYONTEK

Part #	LY62W2568RL-70LL

Description	256K X 8 BIT LOW POWER CMOS SRAM

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Manufacturer	LYONTEK [Lyontek Inc.]

Direct Link	http://www.lyontek.com.tw

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LY62W2568

Rev. 1.7

256K X 8 BIT LOW POWER CMOS SRAM

Lyontek Inc. reserves the rights to change the specifications and products without notice.

5F, No. 2, Industry E. Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan.

TEL: 886-3-6668838

FAX: 886-3-6668836

1



FEATURES

 Fast access time : 55/70ns

 Low power consumption:

Operating current : 20/18mA (TYP.)

Standby current : 1

A (TYP.)

 Single 2.7V ~ 5.5V power supply

 All outputs TTL compatible

 Fully static operation

 Tri-state output

 Data retention voltage : 1.5V (MIN.)

 Green package available

 Package : 32-pin 8mm x 20mm TSOP-I

32-pin 8mm x 13.4mm STSOP

32-pin 450 mil SOP

32-pin 600 mil P-DIP

36-ball 6mm x 8mm TFBGA

GENERAL DESCRIPTION

The LY62W2568 is a 2,097,152-bit low power

CMOS static random access memory organized as

262,144 words by 8 bits. It is fabricated using very

high performance, high reliability CMOS technology.

Its standby current is stable within the range of

operating temperature.

The LY62W2568 is well designed for very low power

system applications, and particularly well suited for

battery back-up nonvolatile memory application.

The LY62W2568 operates from a single power

supply of 2.7V ~ 5.5V and all outputs are fully TTL

compatible

PRODUCT FAMILY

Product

Family

Operating

Temperature

Vcc Range

Speed

Power Dissipation

Standby(ISB1,TYP.)

Operating(Icc,TYP.)

LY62W2568

0 ~ 70℃

2.7 ~ 5.5V

55/70ns

1µA

20/18mA

LY62W2568(I)

-40 ~ 85℃

2.7 ~ 5.5V

55/70ns

1µA

20/18mA

FUNCTIONAL BLOCK DIAGRAM

DECODER

I/O DATA

CIRCUIT

CONTROL

CIRCUIT

256Kx8

MEMORY ARRAY

COLUMN I/O

A0-A17

Vcc

Vss

DQ0-DQ7

CE#

WE#

OE#

CE2

PIN DESCRIPTION

SYMBOL

DESCRIPTION

A0 - A17

Address Inputs

DQ0

– DQ7

Data Inputs/Outputs

CE#, CE2

Chip Enable Inputs

WE#

Write Enable Input

OE#

Output Enable Input

VCC

Power Supply

VSS

Ground

NC

No Connection

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LY62W2568RL-70LL Datasheet(PDF) 2 Page - Lyontek Inc.

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