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MSM548263 PDF预览

MSM548263

更新时间: 2022-12-13 04:56:09
品牌 Logo 应用领域
冲电气 - OKI 动态存储器
页数 文件大小 规格书
40页 387K
描述
262,144-Word x 8-Bit Multiport DRAM

MSM548263 数据手册

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¡ Semiconductor  
AC Characteristics (1/3)  
Parameter  
MSM548263  
-60  
-70  
-80  
Symbol  
Unit Note  
Min. Max. Min. Max. Min. Max.  
Random Read or Write Cycle Time  
Read Modify Write Cycle  
tRC  
tRWC  
tPC  
120  
170  
40  
85  
0
60  
30  
15  
35  
15  
35  
140  
185  
45  
90  
0
70  
35  
20  
40  
20  
35  
150  
195  
50  
90  
0
80  
40  
25  
45  
20  
35  
ns  
ns  
Fast Page Mode Cycle Time  
Fast Page Mode Read Modify Write Cycle Time  
Access Time from RAS  
ns  
tPRWC  
tRAC  
tAA  
ns  
ns 8% 14  
ns 8% 14  
ns 8% 15  
ns 8% 15  
Access Time from Column Address  
Access Time from CAS  
tCAC  
tCPA  
tOFF  
tT  
Access Time from CAS Precharge  
Output Buffer Turn-off Delay  
Transition Time (Rise and Fall)  
RAS Precharge Time  
ns  
ns  
ns  
10  
7
3
3
3
tRP  
50  
60  
60  
RAS Pulse Width  
tRAS  
tRASP  
tRSH  
tCSH  
tCAS  
tRCD  
tRAD  
tRAL  
tCRP  
tCP  
60 10k 70 10k 80 10k ns  
60 100k 70 100k 80 100k ns  
RAS Pulse Width (Fast Page Mode Only)  
RAS Hold Time  
15  
60  
20  
70  
25  
80  
ns  
ns  
CAS Hold Time  
CAS Pulse Width  
15 10k 20 10k 25 10k ns  
RAS to CAS Delay Time  
20  
15  
30  
10  
10  
0
45  
30  
20  
15  
35  
10  
10  
0
50  
35  
20  
15  
40  
10  
10  
0
55  
40  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
14  
14  
RAS to Column Address Delay Time  
Column Address to RAS Lead Time  
CAS to RAS Precharge Time  
CAS Precharge Time (Fast Page Mode)  
Row Address Set-up Time  
tASR  
tRAH  
tASC  
tCAH  
tAR  
Row Address Hold Time  
10  
0
10  
0
10  
0
Column Address Set-up Time  
Column Address Hold Time  
Column Address Hold Time referenced to RAS  
Read Command Set-up Time  
Read Command Hold Time  
10  
50  
0
10  
55  
0
12  
55  
0
tRCS  
tRCH  
tRRH  
tCRL  
tRCL  
tCOH  
tWCS  
tWCH  
tWCR  
tWP  
0
0
0
11  
11  
Read Command Hold Time referenced to RAS  
CAS "H" to RAS "H" Lead Time  
RAS "H" to CAS "H" Lead Time  
Data Output Hold after CAS Low  
Write Command Set-up Time  
Write Command Hold Time  
0
0
0
0
0
0
0
0
0
5
5
5
19  
13  
0
0
0
10  
50  
10  
15  
15  
12  
55  
12  
20  
20  
15  
55  
15  
20  
20  
Write Command Hold Time referenced to RAS  
Write Command Pulse Width  
Write Command to RAS Lead Time  
Write Command to CAS Lead Time  
tRWL  
tCWL  
6/40  

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