Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.NET

X  

Preview PDF Download HTML

W9725G6KB25A Datasheet(HTML) 24 Page - Winbond

Part No. W9725G6KB25A
Description  DLL aligns DQ and DQS transitions with clock, Data masks (DM) for write data, Write Data Mask
Download  87 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  WINBOND [Winbond]
Homepage  http://www.winbond.com
Logo 

W9725G6KB25A Datasheet(HTML) 24 Page - Winbond

Zoom Inzoom in Zoom Outzoom out
Go To Page :
/ 87 page
background image
W9725G6KB
Publication Release Date: Sep. 03, 2012
- 24 -
Revision A03
CMD
1
2
3
4
5
6
7
8
9
10
11
12
0
-1
CLK /CLK
DQS/DQS
DQ
AL=2
CL=3
WL=RL-1=4
≥ tRCD
RL=AL+CL=5
Dout0
Din0
Active
A-Bank
Read
A-Bank
Write
A-Bank
Din1
Din2
Din3
Dout1
Dout2 Dout3
[AL = 2 and CL = 3, RL = (AL + CL) = 5, WL = (RL - 1) = 4, BL = 4]
Figure 14
– Example 1: Read followed by a write to the same bank,
where AL = 2 and CL = 3, RL = (AL + CL) = 5, WL = (RL - 1) = 4, BL = 4
1
2
3
4
5
6
7
8
9
10
11
12
0
-1
CL=3
WL=RL-1=2
≥ tRCD
RL=AL+CL=3
AL=0
CMD
CLK/CLK
DQ
Dout0
Dout1 Dout2 Dout3
Din0
Din1
Din2
Din3
Write
A-Bank
Read
A-Bank
Active
A-Bank
DQS/DQS
AL = 0 and CL = 3, RL = (AL + CL) = 3, WL = (RL - 1) = 2, BL = 4]
Figure 15
– Example 2: Read followed by a write to the same bank,
where AL = 0 and CL = 3, RL = (AL + CL) = 3, WL = (RL - 1) = 2, BL = 4
8.4.2
Burst mode operation
Burst mode operation is used to provide a constant flow of data to memory locations (write cycle), or
from memory locations (read cycle). The parameters that define how the burst mode will operate are
burst sequence and burst length. The DDR2 SDRAM supports 4 bit and 8 bit burst modes only. For 8
bit burst mode, full interleave address ordering is supported, however, sequential address ordering is
nibble based for ease of implementation. The burst length is programmable and defined by MR A[2:0].
The burst type, either sequential or interleaved, is programmable and defined by MR [A3]. Seamless
burst read or write operations are supported.


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36  37  38  39  40  41  42  43  44  45  46  47  48  49  50  51  52  53  54  55  56  57  58  59  60  61  62  63  64  65  66  67  68  69  70  71  72  73  74  75  76  77  78  79  80  81  82  83  84  85  86  87 


Datasheet Download




Link URL



Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Bookmark   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn