LY622568SLI 查看數據表（PDF） - Unspecified
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LY622568SLI Datasheet PDF : 14 Pages
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®
Rev. 2.2
LY622568
256K X 8 BIT LOW POWER CMOS SRAM
FEATURES
Fast access time : 45/55/70ns
Low power consumption:
Operating current : 50/40/30mA (TYP.)
Standby current : 3μA@5V(TYP.) LL/SL version
2μA@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
LY622568(LL)
LY622568(LLE)
LY622568(LLI)
LY622568(SL)
LY622568(SLE)
LY622568(SLI)
Operating
Temperature
0 ~ 70℃
-20 ~ 80℃
-40 ~ 85℃
0 ~ 70℃
-20 ~ 80℃
-40 ~ 85℃
Vcc
Range
4.5 ~ 5.5V
4.5 ~ 5.5V
4.5 ~ 5.5V
4.5 ~ 5.5V
4.5 ~ 5.5V
4.5 ~ 5.5V
Speed
45/55/70ns
45/55/70ns
45/55/70ns
45/55/70ns
45/55/70ns
45/55/70ns
Power Dissipation
Standby(ISB1,TYP.) Operating(Icc,TYP.)
-
3µA@5V
50/40/30mA
-
3µA@5V
50/40/30mA
-
3µA@5V
50/40/30mA
2µA@3V 3µA@5V
50/40/30mA
2µA@3V 3µA@5V
50/40/30mA
2µA@3V 3µA@5V
50/40/30mA
FUNCTIONAL BLOCK DIAGRAM
PIN DESCRIPTION
Vcc
Vss
A0-A17
DECODER
256Kx8
MEMORY ARRAY
DQ0-DQ7
I/O DATA
CIRCUIT
COLUMN I/O
SYMBOL
A0 - A17
DQ0 – DQ7
CE#, CE2
WE#
OE#
VCC
VSS
NC
DESCRIPTION
Address Inputs
Data Inputs/Outputs
Chip Enable Inputs
Write Enable Input
Output Enable Input
Power Supply
Ground
No Connection
CE#
CE2
WE#
OE#
CONTROL
CIRCUIT
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
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