参数资料
型号: WED9LC6816V1512BI
元件分类: 存储器
英文描述: SPECIALTY MEMORY CIRCUIT, PBGA153
封装: MO-163, BGA-153
文件页数: 14/27页
文件大小: 370K
代理商: WED9LC6816V1512BI
21
White Electronic Designs Corporation (508) 366-5151 www.whiteedc.com
WED9LC6816V
January 2001
FIG. 12 SDRAM READ & WRITE CYCLE WITH AUTO PRECHARGE @ BURST LENGTH = 4
Cb
Ca
Rb
Ra
CL = 2
Auto Precharge
Start Point
(B-Bank)
Auto Precharge
Start Point
(A-Bank)
Write with
Auto Precharge
(B-Bank)
Read with
Auto Precharge
(A-Bank)
Row Active
(B-Bank)
Row Active
(A-Bank)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Ra
Qa3
Db0
Db1
Db2
Db3
Qa1
Qa0
Qa2
DON’T CARE
Rb
CL = 3
DQ
Qa3
Db0
Db1
Db2
Db3
Qa1
Qa0
Qa2
SDRAS
SDCAS
ADDR
BA
BWE
SDA10
SDCLK
SDCE
SDWE
NOTES:
1. tCDL should be controlled to meet minimum tRAS before internal precharge start.
(In the case of Burst Length = 1 & 2 and BRSW mode)
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