參數(shù)資料
型號(hào): WED9LC6816V1510BI
廠商: WHITE ELECTRONIC DESIGNS CORP
元件分類(lèi): 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(yè)數(shù): 17/26頁(yè)
文件大?。?/td> 324K
代理商: WED9LC6816V1510BI
WED9LC6816V
24
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. 16
SDRAM MODE REGISTER
SET CYLE
SDRAS#
SDCAS#
ADDR
BWE#
SDCK
SDCE#
Ra
Key
DQ
New Command
New
Command
Auto Refresh
MRS
SDWE#
DON'T CARE
tRFC
HI-Z
Note 2
Note 1
Note 3
HIGH
012
34
567
8
0
1
2
3
4
5
6
7
8
9
10
*Both banks precharge should be completed before Mode Register Set cycle and Auto refresh cycle.
NOTES:
MODE REGISTER SET CYCLE
1. SDCE#, SDRAS#, SDCAS# & SDWE# activation at the same clock cycle with address key will set internal mode register.
2. Minimum 2 clock cycles should be met before new SDRAS# activation.
3. Please refer to Mode Register Set Table.
SDRAM AUTO REFRESH CYCLE
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