參數(shù)資料
型號(hào): WED9LAPC2C16P8BI
廠商: MICROSEMI CORP-PMG MICROELECTRONICS
元件分類: 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): 6/21頁(yè)
文件大?。?/td> 693K
代理商: WED9LAPC2C16P8BI
14
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 8 – SDRAM PAGE WRITE CYCLE AT DIFFERENT BANK @ BURST LENGTH = 4
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#
Row Active
(A-Bank)
Row Active
(B-Bank)
Write
(A-Bank)
Write
(A-Bank)
Write
(B-Bank)
Write
(B-Bank)
Precharge
(Both Banks)
DON’T CARE
Note 2
RAa
CAa
RBb
CBb
CBd
CAc
RAa
RBb
Note 1
tRDL
tCDL
DBb0
DBb1
DBb2
DBb3
DAc0
DAc1
DBd0
DBd1
DAa0
DAa1
DAa2
DAa3
NOTES:
1. To interrupt burst write by Row precharge, VCDQM# should be asserted to mask invalid input data.
2. To interrupt a burst read by Row precharge, both the read and the precharge banks must be the same.
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