参数资料
型号: WED3DL644V10BC
厂商: WHITE ELECTRONIC DESIGNS CORP
元件分类: DRAM
英文描述: 4M X 64 SYNCHRONOUS DRAM, 7 ns, PBGA153
封装: 17 X 23 MM, BGA-153
文件页数: 8/28页
文件大小: 918K
代理商: WED3DL644V10BC
16
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
White Electronic Designs
WED3DL644V
August 2005
Rev. 6
FIG. 7 PAGE READ CYCLE AT DIFFERENT BANK @BURST LENGTH=4
RAS#
CAS#
ADDR
BA
DQM
A10/AP
CKE
CLOCK
CE#
CAc
CBd
CAe
RBb
CAa
RAa
CL = 2
DQ
Read
(A-Bank)
Read
(A-Bank)
Read
(B-Bank)
Row Active
(B-Bank)
Read
(B-Bank)
Precharge
(A-Bank)
Read
(A-Bank)
Row Active
(A-Bank)
WE#
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
HIGH
RAa
QAa2
QAa3
QBb0
QBb1
QBb2
QBb3
QAc0
QAc1
QBd0
QBd1 QAe0
QAe1
CL = 3
QAa2
QAa3
QAa0
QAa1
QAa0
QAa1
QBb0
QBb1
QBb3
QBb2
QAc0
QAc1
QBd0 QBd1
QAe0
QAe1
DON'T CARE
CBb
Note 2
Note 1
RBb
NOTES:
1.
CE# can be don't care when RAS#, CAS# and WE# are high at the clock high going edge.
2.
To interrupt a burst read by row precharge, both the read and the precharge banks must be the same.
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