EP9307 Datasheet, PDF (21/48 Pages) Cirrus Logic – ARM9 SOC WITH ETHERNET USB DISPLAY AND TOUCHSCREEN

EP9307
ARM9 SOC with Ethernet, USB, Display and Touchscreen
Static Memory 32-bit Read on 8-bit External Bus
Parameter
AD setup to RDn assert time
RDn assert to Address 1 transition time
Address 2 assert time
Address 3 assert time
AD transition to RDn deassert time
AD hold from RDn deassert time
RDn assert time
CSn assert to RDn assert delay time
CSn deassert to RDn deassert delay time
CSn assert to DQMn assert delay time
CSn deassert to DQMn deassert delay time
DA setup to AD transition time
DA to RDn setup time
AD transition to DA transition hold time
RDn deassert to DA transition hold time
Symbol
t_ADs
t_AD1
t_AD2
t_AD3
t_AD4
t_ADh
t_RDpwL
t_RDd
t_RDh
t_DQMd
t_DQMh
t_DAs1
t_DAs2
t_DAh1
t_DAh2
Min
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Typ
t_HCLK
t_HCLK × (WST1 + 1)
t_HCLK × (WST1 + 1)
t_HCLK × (WST1 + 1)
t_HCLK × (WST1 + 2)
t_HCLK × 2
t_HCLK × (4 × WST1 + 5)
0
0
0
0
6
t_HCLK + 6
0
0
Max
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
t_ADs
AD
CSn
W Rn
RDn
DQ M n
DA
W AIT
t_AD1
t_AD2
t _{AD 3}
t_AD4
t_ADh
t_RDd
t_{D QMd}
t_DAs1
t_{RD PwL}
t _{D A h1}
t_{D Ah1}
t_{D As 1}
t_RDh
t_{D QMh}
t _{D A h1}
1
t_{D Ah2}
t_DAs1
t_DAs2
Figure 8. Static Memory Multiple Word Read 8 Bit Cycle Timing Measurement
DS667PP3
©Copyright 2004 Cirrus Logic (All Rights Reserved)
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