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EP9307 Datasheet(PDF) 21 Page - Cirrus Logic

No. de pieza EP9307
Descripción Electrónicos  ARM9 SOC WITH ETHERNET USB DISPLAY AND TOUCHSCREEN
PDF  48 Pages
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Fabricante Electrónico  CIRRUS [Cirrus Logic]
Página de inicio  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

EP9307 Datasheet(HTML) 21 Page - Cirrus Logic

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©Copyright 2004 Cirrus Logic (All Rights Reserved)
21
EP9307
ARM9 SOC with Ethernet, USB, Display and Touchscreen
Static Memory 32-bit Read on 8-bit External Bus
Parameter
Symbol
Min
Typ
Max
Unit
AD setup to RDn assert time
tADs
-
tHCLK
-ns
RDn assert to Address 1 transition time
tAD1
-
tHCLK × (WST1 + 1)
-ns
Address 2 assert time
tAD2
-
tHCLK × (WST1 + 1)
-ns
Address 3 assert time
tAD3
-
tHCLK × (WST1 + 1)
-ns
AD transition to RDn deassert time
tAD4
-
tHCLK × (WST1 + 2)
-ns
AD hold from RDn deassert time
tADh
-
tHCLK × 2
-ns
RDn assert time
tRDpwL
-
tHCLK × (4 × WST1 + 5)
-ns
CSn assert to RDn assert delay time
tRDd
-0
-
ns
CSn deassert to RDn deassert delay time
tRDh
-0
-
ns
CSn assert to DQMn assert delay time
tDQMd
-0
-
ns
CSn deassert to DQMn deassert delay time
tDQMh
-0
-
ns
DA setup to AD transition time
tDAs1
-6
-
ns
DA to RDn setup time
tDAs2
-
tHCLK + 6
-ns
AD transition to DA transition hold time
tDAh1
-0
-
ns
RDn deassert to DA transition hold time
tDAh2
-0
-
ns
Figure 8. Static Memory Multiple Word Read 8 Bit Cycle Timing Measurement
CSn
WRn
RDn
DA
AD
DQMn
t
AD 1
t
AD2
t
AD 3
t
DAs1
t
DQMh
t
RDh
t
DAh1
t
DAh
1
t
DAh1
t
DAs 1
t
DAs1
WAIT
t
RDd
t
DQMd
t
AD s
t
RD PwL
t
ADh
t
AD 4
t
DAs2
t
DAh2
1



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