參數(shù)資料
型號(hào): EDI9LC644V
英文描述: 128Kx32 SSRAM/1Mx32 SDRAM Array(3.3V,128x32同步靜態(tài)RAM和1Mx32同步動(dòng)態(tài)RAM陣列)
中文描述: 128Kx32 SSRAM/1Mx32內(nèi)存陣列(3.3伏,128x32同步靜態(tài)內(nèi)存和1Mx32同步動(dòng)態(tài)內(nèi)存陣列)
文件頁(yè)數(shù): 13/26頁(yè)
文件大?。?/td> 460K
代理商: EDI9LC644V
20
White Electronic Designs Corporation (508) 366-5151 www.whiteedc.com
EDI9LC644V
EDI9LC644AV
FIG. 12 SDRAM READ & WRITE CYCLE WITH AUTO PRECHARGE @ BURST LENGTH = 4
Cb
Ca
Rb
Ra
CL = 2
Auto Precharge
Start Point
(B-Bank)
Auto Precharge
Start Point
(A-Bank)
Write with
Auto Precharge
(B-Bank)
Read with
Auto Precharge
(A-Bank)
Row Active
(B-Bank)
Row Active
(A-Bank)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Ra
Qa3
Db0
Db1
Db2
Db3
Qa1
Qa0
Qa2
DON'T CARE
Rb
CL = 3
DQ
Qa3
Db0
Db1
Db2
Db3
Qa1
Qa0
Qa2
SDRAS
SDCAS
ADDR
A11 (BA)
BWE
SDA10
SDCLK
SDCE
SDWE
NOTES:
1. tCDL should be controlled to meet minimum tRAS before internal precharge start.
(In the case of Burst Length = 1 & 2 and BRSW mode)
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