參數(shù)資料
型號: W3H128M72E-400SBC
廠商: WHITE ELECTRONIC DESIGNS CORP
元件分類: DRAM
英文描述: 128M X 72 DDR DRAM, 1.35 ns, PBGA208
封裝: 16 X 22 MM, 1 MM PITCH, PLASTIC, BGA-208
文件頁數(shù): 13/32頁
文件大?。?/td> 988K
代理商: W3H128M72E-400SBC
W3H128M72E-XSBX
20
White Electronic Designs Corporation (602) 437-1520 www.whiteedc.com
White Electronic Designs
September 2009
Rev. 6
White Electronic Designs Corp. reserves the right to change products or specications without notice.
FIGURE 12 – WRITE COMMAND
CS#
WE#
CAS#
RAS#
CKE
CA
A10
BANK ADDRESS
HIGH
EN AP
DIS AP
BA
CK
CK#
DON’T CARE
ADDRESS
Note: CA = column address; BA = bank address; EN AP = enable auto precharge; and
DIS AP = disable auto precharge.
TABLE 4 – WRITE USING CONCURRENT AUTO PRECHARGE
From Command (Bank n)
To Command (Bank m)
Minimum Delay (With Concurrent
Auto Precharge)
Units
WRITE with Auto Precharge
READ OR READ w/AP
(CL-1) + (BL/2) + tWTR
tCK
WRITE or WRITE w/AP
(BL/2)
tCK
PRECHARGE or ACTIVE
1
tCK
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