AS4C4M4F0-50JI datasheet(7/18 Pages) ALSC

Part #	AS4C4M4F0-50JI

Description	5V 4M횞4 CMOS DRAM (Fast Page mode)

Download	18 Pages

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Manufacturer	ALSC [Alliance Semiconductor Corporation]

Direct Link	https://www.alliancememory.com

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7 / 18 page

AS4C4M4F0

AS4C4M4F1

4/11/01; v.0.9

Alliance Semiconductor

P. 7 of 18

®

Fast page mode cycle

Output enable

Self refresh cycle

Symbol

Parameter

-50

-60

Unit

Notes

Min

Max

Min

Max

tCPA

Access time from CAS precharge

–

28

–

35

13

tRASP

RAS

pulse width

50

100K

60

100K

tPC

Read-write cycle time

30

–

35

–

tCP

CAS

precharge time (fast page)

10

–

10

–

tPCM

Fast page mode RMW cycle

80

–

85

–

tCRW

Page mode CAS pulse width (RMW)

12

–

15

–

Symbol

Parameter

-50

-60

Unit

Notes

Min

Max

Min

Max

tCLZ

CAS to output in Low Z

0

–

0

–

ns

8

tROH

RAS hold time referenced to OE

8–

10

–

ns

tOEA

OE access time

–

13

–

15

ns

tOED

OE to data delay

13

–

15

–

ns

tOEZ

Output buffer turnoff delay from OE

0130

15

ns

8

tOEH

OE command hold time

10

–

10

–

ns

tOLZ

OE to output in Low Z

0

–

0

–

ns

tOFF

Output buffer turn-off time

0

13

0

15

ns

8,10

Std

Symbol

Parameter

-50

-60

Unit

Notes

MinMax

tRASS

RAS pulse width

(CBR self refresh)

100–100–

µs

tRPS

RAS precharge time

(CBR self refresh)

90

–

105

–

ns

tCHS

CAS

hold time

(CBR self refresh)

8–

10

–

ns

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