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DS2227-70 PDF预览

DS2227-70

更新时间: 2024-10-28 22:22:15
品牌 Logo 应用领域
达拉斯 - DALLAS 存储内存集成电路静态存储器
页数 文件大小 规格书
10页 193K
描述
Flexible NV SRAM Stik

DS2227-70 技术参数

生命周期:Transferred包装说明:STIK, SIP-72
Reach Compliance Code:unknown风险等级:5.8
Is Samacsys:N最长访问时间:70 ns
其他特性:DATA RETENTION > 10 YEARS; CONFIGURABLE AS 128K X 32JESD-30 代码:R-XSMA-N72
内存密度:4194304 bit内存集成电路类型:NON-VOLATILE SRAM MODULE
内存宽度:8功能数量:1
端子数量:72字数:524288 words
字数代码:512000工作模式:ASYNCHRONOUS
最高工作温度:70 °C最低工作温度:
组织:512KX8封装主体材料:UNSPECIFIED
封装代码:SIMM封装等效代码:SSIM72
封装形状:RECTANGULAR封装形式:MICROELECTRONIC ASSEMBLY
并行/串行:PARALLEL电源:5 V
认证状态:Not Qualified最大待机电流:0.28 A
子类别:SRAMs最大压摆率:0.28 mA
最大供电电压 (Vsup):5.5 V最小供电电压 (Vsup):4.5 V
标称供电电压 (Vsup):5 V表面贴装:NO
技术:CMOS温度等级:COMMERCIAL
端子形式:NO LEAD端子节距:1.27 mm
端子位置:SINGLEBase Number Matches:1

DS2227-70 数据手册

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DS2227  
Flexible NV SRAM Stik  
www.dalsemi.com  
FEATURES  
Flexibly organized as 128k x 32, 256k x 16,  
or 512k x 8 bits  
PIN ASSIGNMENT  
Data retention >10 years in the absence of  
VCC  
Nonvolatile circuitry transparent to and  
independent from host system  
Automatic write protection circuitry  
safeguards against data loss  
Separate chip enables allow access by byte,  
word, or long word  
Fast access times: 70 ns, 100 ns, or 120 ns  
Unlimited write cycles  
Read cycle time equals write cycle time  
Employs popular JEDEC standard 72-position  
SIMM connection scheme  
Lithium energy source is electrically  
disconnected to retain freshness until power is  
applied for the first time  
72-Pin SIP STIK  
DESCRIPTION  
The DS2227 Flexible NV SRAM Stik is a self-contained 4,194,304-bit nonvolatile static RAM which can  
be flexibly organized as 128k x 32 bits, 256k x 16 bits, or 512k x 8 bits. The nonvolatile memory contains  
all necessary control circuitry and lithium energy sources to maintain data integrity in the absence of  
power for more than 10 years. The DS2227 employs the popular JEDEC standard 72-position SIMM  
connection scheme requiring no additional circuitry.  
OPERATION  
The DS2227 Flexible NV SRAM Stik is used like any standard static RAM. All nonvolatile circuitry is  
transparent to the user. The flexibility of the part is achieved by providing separate read, write, and chip  
1 of 10  
112099  

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