AS4LC4M4F1-50 View Datasheet(PDF) - Alliance Semiconductor

Part Name

Description

Manufacturer

AS4LC4M4F1-50

4M×4 CMOS DRAM (Fast Page) 3.3V Family

Alliance Semiconductor 

AC parameters common to all waveforms

Symbol

tRC

tRP

tRAS

tCAS

tRCD

tRAD

tRSH

tCSH

tCRP

tASR

tRAH

tT

tREF

tCP

tRAL

tASC

tCAH

Parameter

Random read or write cycle time

RAS precharge time

RAS pulse width

CAS pulse width

RAS to CAS delay time

RAS to column address delay time

CAS to RAS hold time

RAS to CAS hold time

CAS to RAS precharge time

Row address setup time

Row address hold time

Transition time (rise and fall)

Refresh period

CAS precharge time

Column address to RAS lead time

Column address setup time

Column address hold time

Read cycle

Symbol

tRAC

tCAC

tAA

tRCS

tRCH

tRRH

Parameter

Access time from RAS

Access time from CAS

Access time from address

Read command setup time

Read command hold time to CAS

Read command hold time to RAS

®

-50

Min

Max

80

–

30

–

50

10K

8

10K

15

35

12

25

10

–

40

–

5

–

0

–

8

–

1

50

–

64

8

–

25

–

0

–

8

-50

Min

Max

–

50

–

12

–

25

0

–

0

–

0

–

AS4LC4M4F1

-60

Min

Max

100

–

40

–

60

10K

10

10K

15

43

12

30

10

–

50

–

5

–

0

–

10

–

1

50

–

64

10

–

30

–

0

–

10

–

Unit Notes

ns

ns

ns

ns

ns

6

ns

7

ns

ns

ns

ns

ns

ns

4,5

ms

3

ns

ns

ns

ns

-60

Min

Max

–

60

–

15

–

30

0

–

0

–

0

–

Unit Notes

ns

6

ns

6,13

ns

7,13

ns

ns

9

ns

9

5/16/01; v.1.0 Restored

Alliance Semiconductor

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