參數(shù)資料
型號(hào): V85C2256164SAS8
廠商: MOSEL-VITELIC
元件分類: DRAM
英文描述: 16M X 16 DDR DRAM, 0.8 ns, PBGA60
封裝: 0.80 X 1 MM PITCH, SOC, BGA-60
文件頁數(shù): 20/61頁
文件大?。?/td> 814K
代理商: V85C2256164SAS8
27
MOSEL VITELIC
V58C2256(804/404/164)S
V58C2256(804/404/164)S Rev. 1.4 October 2002
QFC timing on Write operation
QFC on writes is enabled as soon as possible after the clock edge of write command and disabled as soon
as possible after the last DQS-in low going edge.
Figure 27. : QFC timing on write operation with tDQSSmax
Figure 28. : QFC timing on write operation with tDQSSmin
1. The value of tQCK min. is 1.25ns from the last low going data strobe edge to QFC HI-Z.
2. The value of tQCK max. is 0.5tcK from the first high going clock edge after the last low going data strobe
edge to QFC HI-Z.
2
01
5
34
8
67
Hi-Z
DQS@tDQSSmax
QFC
tQCK
*1tQOHmin.
Dout0 Dout1
BL=2
Write
DQ’S@tDQSSmax
Command
CK
*2tQOHmax.
DQS@tDQSSmin
DQ’S@tDQSSmin
2
01
5
34
8
67
Hi-Z
QFC
tQCK
*1tQOHmin.
Dout0 Dout1
BL=2
Write
Command
CK
*2tQOHmax.
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