EP9307(2005) View Datasheet(PDF) - Cirrus Logic

Part Name

Description

Manufacturer

EP9307
(Rev.:2005)

ARM9 SOC with Ethernet, USB, Display, and Touchscreen

Cirrus Logic 

EP9307

ARM9 SOC with Ethernet, USB, Display and Touchscreen

Static Memory 32-bit Write on 16-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

tDAh1

tDAV

Min

tHCLK – 3

-

tHCLK × 2

7

-

-

-

-

-

-

tHCLK

-

Typ

-

-

-

-

-

tHCLK × (WST1 + 1)

-

-

tHCLK × (WST1 + 1)

-

-

-

Max

-

tHCLK + 6

-

-

2

-

(tHCLK × 2) + 14

1

-

(tHCLK × 2) + 7

-

8

Unit

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

tADs

AD

CSn

WRn

tWRd

RDn

DQMn

tDQMd

DA

WAIT

tADd

tADh

tWRpwL

tDQpwL

tDAV

tWRpwH

tWRpwL

tDQpwH

tDAh

tDQpwL

tDAV

Figure 11. Static Memory Multiple Word Write 16-bit Cycle Timing Measurement

tCSh

tDAh

24

©Copyright 2005 Cirrus Logic (All Rights Reserved)

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