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LY622568SL-55LLE Datasheet(PDF) 2 Page - Lyontek Inc.

Part # LY622568SL-55LLE
Description  256K X 8 BIT LOW POWER CMOS SRAM
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Manufacturer  LYONTEK [Lyontek Inc.]
Direct Link  http://www.lyontek.com.tw
Logo LYONTEK - Lyontek Inc.

LY622568SL-55LLE Datasheet(HTML) 2 Page - Lyontek Inc.

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LY622568
Rev. 2.4
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 : 45/55/70ns
Low power consumption:
Operating current : 50/40/30mA (TYP.)
Standby current : 3
μA@5V(TYP.) LL/SL version
2
μA@3V(TYP.) SL version
Single 4.5V ~ 5.5V power supply
All inputs and 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
GENERAL DESCRIPTION
The LY622568 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 LY622568 is well designed for very low power
system applications, and particularly well suited for
battery back-up nonvolatile memory application.
The LY622568 operates from a single power
supply of 4.5V ~ 5.5V and all inputs and outputs are
fully TTL compatible
PRODUCT FAMILY
Product
Family
Operating
Temperature
Vcc
Range
Speed
Power Dissipation
Standby(ISB1,TYP.)
Operating(Icc,TYP.)
LY622568(LL)
0 ~ 70℃
4.5 ~ 5.5V
45/55/70ns
-
3µA@5V
50/40/30mA
LY622568(LLE)
-20 ~ 80℃
4.5 ~ 5.5V
45/55/70ns
-
3µA@5V
50/40/30mA
LY622568(LLI)
-40 ~ 85℃
4.5 ~ 5.5V
45/55/70ns
-
3µA@5V
50/40/30mA
LY622568(SL)
0 ~ 70℃
4.5 ~ 5.5V
45/55/70ns
2µA@3V
3µA@5V
50/40/30mA
LY622568(SLE)
-20 ~ 80℃
4.5 ~ 5.5V
45/55/70ns
2µA@3V
3µA@5V
50/40/30mA
LY622568(SLI)
-40 ~ 85℃
4.5 ~ 5.5V
45/55/70ns
2µA@3V
3µA@5V
50/40/30mA
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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