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SMJ44C251B-12HJM 参数 Datasheet PDF下载

SMJ44C251B-12HJM图片预览
型号: SMJ44C251B-12HJM
PDF下载: 下载PDF文件 查看货源
内容描述: 256K ×4 VRAM 256K ×4的DRAM 512K ×4的SAM [256K X 4 VRAM 256K x 4 DRAM with 512K x 4 SAM]
分类和应用: 内存集成电路动态存储器
文件页数/大小: 57 页 / 1255 K
品牌: AUSTIN [ AUSTIN SEMICONDUCTOR ]
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VRAM  
SMJ44C251B  
MT42C4256  
Austin Semiconductor, Inc.  
FIGURE 15: Delayed-Write-Cycle Timing  
(Output-Enable-Controlled Write)  
WRITE-CYCLE STATE TABLE  
STATE  
CYCLE  
1
L
L
H
H
2
L
L
L
L
3
H
L
L
H
4
5
Write Operation  
Don't Care Valid Data  
Write Mask Valid Data  
Don't Care Valid Data  
Don't Care Write Mask  
Write-mask load/use, Write DQs to I/Os  
Use previous write mask, Write DQs to I/Os  
Load write mask on later of W\ fall and CAS\ fall  
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.  
SMJ44C251B/MT42C4256  
Rev. 0.1 12/03  
25  
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