LY62256是262,144位低功耗CMOS静态，随机存取记忆体32,768字8 bits。它是采用用非常高的性能制造的，及可靠性cmos技术。待机电流和工作温度范围内是稳定的。LY62256的设计低功耗特别适用于电池的应用备份非易失性存储器应用程序。快速访问时间：35 / 55 / 70ns,低功耗：工作电流：20/15 / 10ma（典型值），待机电流：1uA (TYP.)  电压2.7 ~ 5.5V，所有输入和输出TTL兼容，全静态操作，三态输出,数据保持电压：1.5v（分钟）.
GENERAL DESCRIPTION
The LY62256 is a 262,144-bit low power CMOS static random access memory organized as 32,768 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  LY62256  is  well  designed  for  low  power application,  and  particularly  well  suited  for  battery back-up nonvolatile memory application.  
The LY62256 operates from a single power supply of 2.7~5.5V and all  inputs and outputs are  fully TTL compatible
FEATURES 
Fast access time : 35/55/70ns
Low power consumption:     
Operating current : 20/15/10mA (TYP.)  
Standby current : 1A (TYP.)  
Single 2.7~5.5V power supply
All inputs and outputs TTL compatible
Fully static operation
Tri-state output
Data retention voltage : 1.5V (MIN.)
Green package available
Package :
28-pin 600 mil P-DIP
28-pin 330 mil SOP
28-pin 8mm x 13.4mm STSOP
28-pin 300 mil Skinny P-DIP   

LY62256管脚定义：