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UPD43257BCZ-85LL PDF预览

UPD43257BCZ-85LL

更新时间: 2024-11-26 22:07:59
品牌 Logo 应用领域
日电电子 - NEC 存储内存集成电路静态存储器光电二极管
页数 文件大小 规格书
20页 157K
描述
256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT

UPD43257BCZ-85LL 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:DIP包装说明:DIP,
针数:28Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.32.00.41
风险等级:5.86Is Samacsys:N
最长访问时间:85 ns其他特性:BATTERY BACKUP
JESD-30 代码:R-PDIP-T28JESD-609代码:e0
内存密度:262144 bit内存集成电路类型:STANDARD SRAM
内存宽度:8功能数量:1
端子数量:28字数:32768 words
字数代码:32000工作模式:ASYNCHRONOUS
最高工作温度:70 °C最低工作温度:
组织:32KX8封装主体材料:PLASTIC/EPOXY
封装代码:DIP封装形状:RECTANGULAR
封装形式:IN-LINE并行/串行:PARALLEL
峰值回流温度(摄氏度):NOT SPECIFIED认证状态:Not Qualified
座面最大高度:5.72 mm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端子面层:TIN LEAD
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:15.24 mmBase Number Matches:1

UPD43257BCZ-85LL 数据手册

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DATA SHEET  
MOS INTEGRATED CIRCUIT  
PD43257B  
µ
256K-BIT CMOS STATIC RAM  
32K-WORD BY 8-BIT  
Description  
The µPD43257B is a high speed, low power, and 262,144 bits (32,768 words by 8 bits) CMOS static RAM.  
Battery backup is available. And the µPD43257B has two chip enable pins (/CE1, CE2) to extend the capacity.  
The µPD43257B is packed in 28-pin plastic DIP and 28-pin plastic SOP.  
Features  
32,768 words by 8 bits organization  
Fast access time: 70, 85 ns (MAX.)  
Low VCC data retention: 2.0 V (MIN.)  
Two Chip Enable inputs: /CE1, CE2  
Part number  
Access time  
ns (MAX.)  
Operating supply Operating ambient  
Supply current  
At standby  
µA (MAX.)  
50  
voltage  
V
temperature  
°C  
At operating  
mA (MAX.)  
45  
At data retention  
µA (MAX.) Note  
µPD43257B-xxL  
µPD43257B-xxLL  
70, 85  
4.5 to 5.5  
0 to 70  
3
2
45  
15  
Note TA 40 °C, VCC = 3.0 V  
Version X  
This Data sheet can be applied to the version X. This version is identified with its lot number. Letter X in the fifth  
character position in a lot number signifies version X.  
JAPAN  
D43257B  
X
Lot number  
The information in this document is subject to change without notice. Before using this document, please  
confirm that this is the latest version.  
Not all devices/types available in every country. Please check with local NEC representative for  
availability and additional information.  
Document No. M10693EJ7V0DS00 (7th edition)  
Date Published June 2000 NS CP (K)  
The mark shows major revised points.  
1992  
©
Printed in Japan  

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