DMA2286 datasheet(41/48 Pages) MICRONAS

41 / 48 page

DMA 2275, DMA 2286

Sound DRAM Interface Characteristics, continued

Symbol

Parameter

Pin No.

Min.

Typ.

Max.

Unit

Test Conditions

VCASOL

CAS Output Low Voltage

–

0.4

ICASO = 1.6 mA

VCASOH

CAS Output High Voltage

2.4

–

–ICASO = 0.1 mA

tCAST

CAS Output Transition Time

–

CL = 10 pF

tCP

CAS Output Precharge Time

–

tCAS

CAS Output Low Pulsewidth

–

150

tPC

Page Mode Cycle Time

170

–

tRSH

RAS Output Hold Time after

CAS Output Low

8, 68

110

–

tRCD

CAS Output Delay Time after

RAS Output

–

tCSH

CAS Output Hold Time after

RAS Output Low

170

–

tCRP

CAS Output Precharge Time

before RAS Output Low

150

–

VWOL

WRITE Output Low Voltage

–

0.4

IWO = 1.6 mA

VWOH

WRITE Output High Voltage

2.4

–

–IWO = 0.1 mA

tWT

WRITE Output Transition Time

–

CL = 10 pF

tCWL

WRITE Output Low before CAS

Output High

7, 8, 68

180

–

tWCH

WRITE Output Hold Time

after CAS Output Low

–

tRCH

WRITE Output Hold Time

after CAS Output High

–

tRRH

WRITE Output Hold Time

after RAS Output High

–

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