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LY622568PL-45LLT 参数 Datasheet PDF下载

LY622568PL-45LLT图片预览
型号: LY622568PL-45LLT
PDF下载: 下载PDF文件 查看货源
内容描述: 256K ×8位低功耗CMOS SRAM [256K X 8 BIT LOW POWER CMOS SRAM]
分类和应用: 静态存储器
文件页数/大小: 14 页 / 293 K
品牌: LYONTEK [ Lyontek Inc. ]
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®
LY622568
Rev. 2.4
256K X 8 BIT LOW POWER CMOS SRAM
FEATURES
GENERAL DESCRIPTION
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
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
SYMBOL
DESCRIPTION
Address Inputs
Data Inputs/Outputs
Chip Enable Inputs
Write Enable Input
Output Enable Input
Power Supply
Ground
No Connection
Vcc
Vss
A0 - A17
DQ0 – DQ7
DECODER
256Kx8
MEMORY ARRAY
CE#, CE2
WE#
OE#
V
CC
V
SS
NC
A0-A17
DQ0-DQ7
I/O DATA
CIRCUIT
COLUMN I/O
CE#
CE2
WE#
OE#
CONTROL
CIRCUIT
5F, No. 2, Industry E. Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan.
TEL: 886-3-6668838
FAX: 886-3-6668836
Lyontek Inc.
reserves the rights to change the specifications and products without notice.
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