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X25401 PDF预览

X25401

更新时间: 2024-01-16 04:25:36
品牌 Logo 应用领域
XICOR 存储
页数 文件大小 规格书
14页 60K
描述
SPI Serial AUTOSTORE⑩ NOVRAM

X25401 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
包装说明:PLASTIC, SOIC-8Reach Compliance Code:unknown
风险等级:5.91Is Samacsys:N
JESD-30 代码:R-PDSO-G8JESD-609代码:e0
长度:4.9 mm内存密度:256 bit
内存集成电路类型:NON-VOLATILE SRAM内存宽度:16
功能数量:1端口数量:1
端子数量:8字数:16 words
字数代码:16工作模式:SYNCHRONOUS
最高工作温度:125 °C最低工作温度:-55 °C
组织:16X16输出特性:3-STATE
可输出:NO封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装等效代码:SOP8,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
并行/串行:SERIAL峰值回流温度(摄氏度):NOT SPECIFIED
电源:5 V认证状态:Not Qualified
座面最大高度:1.75 mm最大待机电流:0.00005 A
子类别:SRAMs最大压摆率:0.01 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:YES
技术:MOS温度等级:MILITARY
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:3.9 mm
Base Number Matches:1

X25401 数据手册

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APPLICATION NOTE  
A V A I L A B L E  
AN56  
256 Bit  
X25401  
16 x 16 Bit  
SPI Serial AUTOSTORE™ NOVRAM  
FEATURES  
DESCRIPTION  
1MHz Clock Rate  
The Xicor X25401 is a serial 256 bit NOVRAM featuring  
a static RAM configured 16 x 16, overlaid bit-by-bit with  
a nonvolatile E PROM array. The X25401 features a  
AUTOSTORE™ NOVRAM  
2
—Automatically Performs a Store Operation  
Upon Loss of V  
Serial Peripheral Interface (SPI) and software protocol  
allowing operation on a simple three-wire bus. The bus  
signalsareaclockinput(SCK)plusseparatedatain(SI)  
and data out (SO) lines. Access to the device is con-  
trolled through a chip select (CS) input, allowing any  
number of devices to share the same bus.  
CC  
Single 5 Volt Supply  
Ideal for use with Single Chip Microcomputers  
—Minimum I/O Interface  
—SPI Mode (0,0 & 1,1) Serial Port Compatible  
—Easily Interfaced to Microcontroller Ports  
Software and Hardware Control of Nonvolatile  
Functions  
TheXicorNOVRAMdesignallowsdatatobetransferred  
between the two memory arrays by means of software  
commands or external hardware inputs. A store opera-  
Auto Recall on Power-Up  
TTL and CMOS Compatible  
Low Power Dissipation  
2
tion (RAM data to E PROM) is completed in 5ms or less  
2
and a recall operation (E PROM data to RAM) is com-  
—Active Current: 10mA  
pleted in 2µs or less.  
—Standby Current: 50µA  
8-Lead PDIP and 8-Lead SOIC Packages  
The X25401 also includes the AUTOSTORE feature, a  
user selectable feature that automatically performs a  
High Reliability  
—Store Cycles: 1,000,000  
—Data Retention: 100 Years  
storeoperationwhenV fallsbelowapresetthreshold.  
CC  
Xicor NOVRAMs are designed for unlimited write opera-  
2
tionstoRAM,eitherfromthehostorrecallsfromE PROM  
andaminimum1,000,000storeoperations. Inherentdata  
retention is specified to be greater than 100 years.  
FUNCTIONAL DIAGRAM  
NONVOLATILE  
2
E PROM  
ORE  
ST  
STATIC  
RAM  
256-BIT  
RECALL (6)  
AS (7)  
CONTROL  
LOGIC  
RECALL  
ROW  
DECODE  
CS (1)  
INSTRUCTION  
SI (3)  
COLUMN  
DECODE  
SO (4)  
REGISTER  
SCK (2)  
INSTRUCTION  
DECODE  
4-BIT  
COUNTER  
2051 FHD F01  
AUTOSTORE™ NOVRAM is a trademark of Xicor, Inc.  
COPS is a trademark of National Semiconductor Corp.  
© Xicor, Inc. 1992, 1995, 1996 Patents Pending  
2051-1.5 8/1/97 T0/C0/D2 SH  
Characteristics subject to change without notice  
1

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