參數(shù)資料
型號: WED9LC6816V1610BI
廠商: WHITE ELECTRONIC DESIGNS CORP
元件分類: 存儲(chǔ)器
英文描述: SPECIALTY MEMORY CIRCUIT, PBGA153
封裝: 14 X 22 MM, MO-163, BGA-153
文件頁數(shù): 7/26頁
文件大?。?/td> 324K
代理商: WED9LC6816V1610BI
WED9LC6816V
15
White Electronic Designs Corporation (602) 437-1520 www.whiteedc.com
White Electronic Designs
September, 2003
Rev. 1
White Electronic Designs Corp. reserves the right to change products or specications without notice.
FIG. 7 SDRAM READ & WRITE CYCLE AT SAME BANK @
BURST LENGTH = 4
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
SDCK
SDCE#
SDRAS#
SDWE#
ADDR
Ra
Ca0
Cb0
CL=2
CL=3
tRAC
Note 3
tRAC
Note 3
tSAC
tSHZ Note 4
Qa0
Qa1
Qa2
BA0, 1
[A12,A13]
SDA10
Ra
Rb
BWE#
Row Active
(A-Bank)
Read
(A-Bank)
Precharge
(A-Bank)
Row Active
(A-Bank)
Write
(A-Bank)
Precharge
(A-Bank)
DON’T CARE
SDCAS#
Rb
DQ
tOH
Qa3
Db0
Db1
Db2
Db3
Qa0
Qa1
Qa2
Qa3
Db0
Db1
Db2
Db3
tRDL
tRC
tRCD
Note 1
NOTES:
1.
Minimum row cycle times are required to complete internal DRAM operation.
2.
Row precharge can interrupt burst on any cycle. (CAS Latency - 1) number of valid output data is available after Row precharge. Last valid output will be Hi-Z (tSHZ)
after the clock.
3.
Access time from Row active command. tCC *(tRCD + CAS Latency - 1) + tSAC.
4.
Output will be Hi-Z after the end of burst. (1, 2, 4, 8 & Full page bit burst)
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