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UPD43256BCZ-70LL 参数 Datasheet PDF下载

UPD43256BCZ-70LL图片预览
型号: UPD43256BCZ-70LL
PDF下载: 下载PDF文件 查看货源
内容描述: 256K - BIT的CMOS静态RAM的32K字×8位 [256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT]
分类和应用: 存储内存集成电路静态存储器光电二极管
文件页数/大小: 24 页 / 174 K
品牌: NEC [ NEC ]
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µPD43256B  
Write Cycle Timing Chart 2 (CS Controlled)  
t
WC  
Address (Input)  
t
AS  
t
CW  
CS (Input)  
WE (Input)  
t
t
AW  
WP  
t
WR  
t
DW  
t
DH  
High impedance  
High  
impedance  
Data In  
I/O (Input)  
Cautions 1. CS or WE should be fixed to high level during address transition.  
2. When I/O pins are in the output state, do not apply to the I/O pins signals that are opposite  
in phase with output signals.  
Remark Write operation is done during the overlap time of a low level CS and a low level WE.  
14  
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