參數(shù)資料
型號(hào)： WED9LAPC2C16P8BI
廠商： WHITE ELECTRONIC DESIGNS CORP
元件分類(lèi)： DRAM
英文描述： 4M X 32 SYNCHRONOUS DRAM, PBGA153
封裝： 14 X 22 MM, BGA-153
文件頁(yè)數(shù)： 9/21頁(yè)
文件大小： 693K
代理商： WED9LAPC2C16P8BI
17
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
White Electronic Designs
WED9LAPC2B16P8BC
November 2001
Rev. 1
White Electronic Designs Corp. reserves the right to change products or specications without notice.
FIGURE 11 – SDRAM READ INTERRUPTED BY PRECHARGE COMMAND & READ BURST STOP
@ BURST LENGTH = FULL PAGE
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
GCK
VCRAS#
VCCAS#
VCADDR
VCBS
VCADDR9/AP
VCDATA
VCWE#
VCDQM#
CL = 2
CL = 3
Row Active
(A-Bank)
Read
(A-Bank)
Read
(A-Bank)
Burst Stop
Precharge
(A-Bank)
DON’T CARE
RAa
CAa
CAb
RAa
Note 2
QAa0
QAa1
QAa2
QAa3
QAa4
QAb0
QAb1
QAb2
QAb3
QAb4
QAb5
QAb0
QAb1
QAb2
QAb3
QAb4
QAb5
QAa0
QAa1
QAa2
QAa3
QAa4
1
2
1
Notes:
1. At full page mode, burst is end at the end of burst. So auto precharge is possible.
2. About the valid VCDATAs after burst stop, it is the same as the case of VCRAS# interrupt. Both cases are illustrated in the above timing diagram. See the label 1, 2 on
each of them. But at burst write, burst stop and VCRAS# interrupt should be compared carefully. Refer to the timing diagram of “Full page write burst stop cycle.”
3. Burst stop is valid at every burst length.
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參數(shù)描述
WED9LAPC2C16V8BC 制造商:WEDC 制造商全稱(chēng):White Electronic Designs Corporation 功能描述:512K x 32 SSRAM / 1M x 64 SDRAM
WED9LAPC2C16V8BI 制造商:WEDC 制造商全稱(chēng):White Electronic Designs Corporation 功能描述:512K x 32 SSRAM / 1M x 64 SDRAM
WED9LAPC3C16V8BC 制造商:WEDC 制造商全稱(chēng):White Electronic Designs Corporation 功能描述:512K x 32 SSRAM / 1M x 64 SDRAM
WED9LAPC3C16V8BI 制造商:WEDC 制造商全稱(chēng):White Electronic Designs Corporation 功能描述:512K x 32 SSRAM / 1M x 64 SDRAM
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