LY62W5128UL datasheet(2/11 Pages) LYONTEK

Part #	LY62W5128UL

Description	512K 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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LY62W5128

Rev. 1.a

512K 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 : 55ns

Low power consumption:

Operating current : 30mA (TYP.)

Standby current : 4

μA (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 400 mil TSOP-II

GENERAL DESCRIPTION

The LY62W5128 is a 4,194,304-bit low power

CMOS static random access memory organized as

524,288 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 LY62W5128 is well designed for very low power

system applications, and particularly well suited for

battery back-up nonvolatile memory application.

The LY62W5128 operates from a single power

supply of 2.7V ~ 5.5V and all inputs and outputs are

fully TTL compatible

PRODUCT FAMILY

Power Dissipation

Product

Family

Operating

Temperature

Vcc Range

Speed

Standby(ISB1TYP.)

Operating(Icc,TYP.)

LY62W5128

0 ~ 70℃

2.7 ~ 5.5V

55ns

4µA

30mA

LY62W5128(E)

-20 ~ 80℃

2.7 ~ 5.5V

55ns

4µA

30mA

LY62W5128(I)

-40 ~ 85℃

2.7 ~ 5.5V

55ns

4µA

30mA

FUNCTIONAL BLOCK DIAGRAM

DECODER

I/O DATA

CIRCUIT

CONTROL

CIRCUIT

512Kx8

MEMORY ARRAY

COLUMN I/O

A0-A18

Vcc

Vss

DQ0-DQ7

CE#

WE#

OE#

PIN DESCRIPTION

SYMBOL

DESCRIPTION

A0 - A18

Address Inputs

DQ0 – DQ7

Data Inputs/Outputs

CE#

Chip Enable Inputs

WE#

Write Enable Input

OE#

Output Enable Input

VCC

Power Supply

VSS

Ground

NC

No Connection

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