ep9307 Cirrus Logic, Inc., ep9307 Datasheet - Page 20

• Manufacturer Part Number: ep9307
• Description: Arm9 Soc With Ethernet, Usb, Display, And Touchscreen
• Manufacturer: Cirrus Logic, Inc.

EP9307
ARM9 SOC with Ethernet, USB, Display and Touchscreen
Static Memory Single Word Write Cycle
20
AD setup to WRn assert time
AD hold from WRn deassert time
WRn deassert to CSn deassert time
CSn to WRn assert delay time
WRn assert time
CSn to DQMn assert delay time
WRn deassert to DA transition time
WRn assert to DA valid
DQMn
WAIT
WRn
RDn
CSn
AD
DA
Parameter
Figure 7. Static Memory Single Word Write Cycle Timing Measurement
t
©
ADs
t
WRd
Copyright 2005 Cirrus Logic (All Rights Reserved)
Symbol
t
t
t
WRpw
DQMd
t
t
t
t
t
WRd
ADs
ADh
CSh
DAh
DAV
t
DQMd
t
t
HCLK
HCLK
t
t
Min
HCLK
DAV
7
-
-
-
-
-
× 2
t
WRpw
3
t
HCLK
t
CSh
× (WST1 + 1)
Typ
-
-
-
-
-
-
-
t
ADh
Max
t
DAh
2
1
8
-
-
-
-
-
DS667PP4
Unit
ns
ns
ns
ns
ns
ns
ns
ns