參數(shù)資料
型號(hào): EP9302-IQZ
廠商: Cirrus Logic, Inc.
英文描述: High-speed ARM9 System-on-chip Processor with MaverickCrunch
中文描述: 高速ARM9的系統(tǒng)級芯片處理器MaverickCrunch
文件頁數(shù): 19/42頁
文件大?。?/td> 302K
代理商: EP9302-IQZ
DS653PP3
Copyright 2005 Cirrus Logic (All Rights Reserved)
19
EP9302
High-speed ARM9 System-on-chip Processor with MaverickCrunch
Static Memory 32-bit Write on 8-bit External Bus
Parameter
Symbol
Min
Typ
Max
Unit
AD setup to WRn assert time
t
ADs
t
HCLK
3
-
-
ns
WRn/DQMn deassert to AD transition time
t
ADd
-
-
t
HCLK
+
6
ns
AD hold from WRn deassert time
t
ADh
t
HCLK
×
2
-
-
ns
CSn hold from WRn deassert time
t
CSh
7
-
-
ns
CSn to WRn assert delay time
t
WRd
-
-
2
ns
WRn assert time
t
WRpwL
-
t
HCLK
×
(WST1 + 1)
t
HCLK
×
2
-
ns
WRn deassert time
t
WRpwH
-
(t
HCLK
×
2) + 14
ns
CSn to DQMn assert delay time
t
DQMd
-
-
1
ns
DQMn assert time
t
DQMpwL
-
t
HCLK
×
(WST1 + 1)
-
ns
DQMn deassert time
t
DQMpwH
-
-
(t
HCLK
×
2) + 7
ns
WRn / DQMn deassert to DA transition time
t
DAh
t
HCLK
-
-
ns
WRn / DQMn assert to DA valid time
t
DAV
-
-
8
ns
Figure 7. Static Memory Multiple Word Write 8-bit Cycle Timing Measurement
CSn
WRn
RDn
DQMn
AD
DA
t
ADs
t
WRd
t
DQMd
t
WRpwL
t
DAh
t
WRpwH
t
ADd
t
CSh
t
ADh
t
DQMpwL
t
DQMpwH
t
WRpwL
t
WRpwH
t
WRpwL
t
WRpwH
t
DQMpwL
t
DQMpwH
t
DQMpwL
t
DQMpwH
t
DAh
t
DAh
t
DAh
t
ADd
t
ADd
WAIT
t
DAV
t
DAV
t
DAV
t
DAV
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