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AS4SD4M16DG-10/XT 参数 Datasheet PDF下载

AS4SD4M16DG-10/XT图片预览
型号: AS4SD4M16DG-10/XT
PDF下载: 下载PDF文件 查看货源
内容描述: 4梅格×16 SDRAM同步动态随机存取存储 [4 Meg x 16 SDRAM Synchronous DRAM Memory]
分类和应用: 存储内存集成电路光电二极管动态存储器时钟
文件页数/大小: 50 页 / 1139 K
品牌: AUSTIN [ AUSTIN SEMICONDUCTOR ]
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SDRAM  
AS4SD4M16  
Austin Semiconductor, Inc.  
AC FUNCTIONAL CHARACTERISTICS5, 6, 7, 8, 9, 11  
(-55oC<TA<+125oC)  
PARAMETER  
SYMBOL  
-8  
-10  
UNITS NOTES  
READ/WRITE command to READ/WRITE command  
tCCD  
tCKED  
tPED  
tDQD  
tDQM  
tDQZ  
tDWD  
tDAL  
tCK  
tCK  
tCK  
tCK  
tCK  
tCK  
tCK  
tCK  
tCK  
tCK  
tCK  
tCK  
tCK  
tCK  
tCK  
1
1
17  
14  
CKE to clock disable or power-down entry mode  
CKE to clock enable or power-down exit setup mode  
DQM to input data delay  
1
1
0
0
2
0
5
2
1
1
2
2
3
2
1
1
0
0
2
0
4
2
1
1
2
2
3
2
14  
17  
DQM to data mask during WRITEs  
17  
DQM to data high-impedance during READs  
WRITE command to input data delay  
Data-in to ACTIVE command  
17  
17  
A2 version  
A2 version  
15, 21  
16, 21  
17  
Data-in to PRECHARGE command A1 version  
Last data-in to burst STOP command  
Last data-in to new READ/WRITE command  
Last data-in to PRECHARGE command  
tDPL  
tBDL  
tCDL  
tRDL  
tMRD  
tROH  
tROH  
17  
A2 version  
16, 21  
27  
LOAD MODE REGISTER command to ACTIVE or REFRESH command  
CL = 3  
CL = 2  
17  
Data-out to high-impedance from PRECHARGE command  
17  
ELECTRICAL TIMING CHARACTERISTICS for -8 SPEED5, 6, 7, 8, 9, 11, 24  
(-55oC<TA<+125oC)  
-8  
MIN  
---  
MAX  
6
PARAMETER  
SYM  
tAC  
UNITS  
ns  
NOTES  
22  
CL = 3  
CL = 2  
CL = 3  
CL = 2  
Access times from CLK (pos. edge)  
---  
8
9
ns  
ns  
22  
22  
22  
22  
22  
21  
---  
---  
tAC  
tCK  
---  
---  
---  
---  
---  
---  
Clock cycle time  
12  
20  
24  
80  
2
ns  
tCK  
ACTIVE to READ or WRITE delay  
PRECHARGE command period  
ns  
tRCD  
tRP  
tRCD  
tWR  
ns  
AUTO REFRESH, ACTIVE command period  
tCK  
---  
WRITE recovery time  
A2 Version  
3-2-3  
100 MHz Speed Reference (CL -tRCD-tRP  
)
CLKs  
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.  
AS4SD4M16  
Rev. 1.5 10/01  
32  
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