EP9307-CR(2005) View Datasheet(PDF) - Cirrus Logic
Part Name
Description
Manufacturer
EP9307-CR Datasheet PDF : 49 Pages
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EP9307
ARM9 SOC with Ethernet, USB, Display and Touchscreen
Static Memory 32-bit Write on 8-bit External Bus
Parameter
AD setup to WRn assert time
WRn/DQMn deassert to AD transition time
AD hold from WRn deassert time
CSn hold from WRn deassert time
CSn to WRn assert delay time
WRn assert time
WRn deassert time
CSn to DQMn assert delay time
DQMn assert time
DQMn deassert time
WRn / DQMn deassert to DA transition time
WRn / DQMn assert to DA valid time
Symbol
tADs
tADd
tADh
tCSh
tWRd
tWRpwL
tWRpwH
tDQMd
tDQMpwL
tDQMpwH
tDAh
tDAV
Min
tHCLK − 3
-
tHCLK × 2
7
-
-
-
-
-
-
tHCLK
-
Typ
-
-
-
-
-
tHCLK × (WST1 + 1)
tHCLK × 2
-
tHCLK × (WST1 + 1)
-
-
-
Max
Unit
-
ns
tHCLK + 6
ns
-
ns
-
ns
2
ns
-
ns
(tHCLK × 2) + 14 ns
1
ns
-
ns
(tHCLK × 2) + 7
ns
-
ns
8
ns
tADs
AD
tADd
tADd
tADd
tADh
CSn
WRn
tWRd
RDn
tDQMd
DQMn
DA
WAIT
tWRpwL
tWRpwL
tWRpwL
tWRpwH
tWRpwH
tWRpwH
tCSh
tDQMpwL
tDQMpwL
tDQMpwL
tDAV
tDQMpwH
tDAV
tDQMpwH
tDAV
tDQMpwH
tDAV
tDAh
tDAh
tDAh
tDAh
Figure 9. Static Memory Multiple Word Write 8-bit Cycle Timing Measurement
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©Copyright 2005 Cirrus Logic (All Rights Reserved)
DS667PP4
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