Rev. 0.9 / July 2004

10

HY57V283220(L)T(P) / HY5V22(L)F(P)

Parameter

Symbol

-5

-55

-6

-7

-H

-8

-P

-S

Unit

Note

Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max

RAS cycle time

Operation

tRC

55

-

55

-

60

-

63

-

63

-

64

-

70

-

70

-

ns

Auto Refresh

tRRC

55

-

55

-

60

-

63

-

63

-

64

-

70

-

70

-

ns

RAS to CAS delay

tRCD

15

-

16.5

-

18

-

20

-

20

-

20

-

20

-

20

-

ns

RAS active time

tRAS

38.7

100

K

38.7

100

K

42

100

K

42

100

K

42

100

K

48

100

K

50

100

K

50

100

K

ns

RAS precharge time

tRP

15

-

16.5

-

18

-

20

-

20

-

20

-

20

-

20

-

ns

RAS to RAS bank active delay

tRRD

2

-2

-

2

-

2

-2

-2

-

20

-

20

-

CLK

CAS to CAS delay

tCCD

1-

1-1

-

1-

1-

1-

1

-

1

-

CLK

Write command to data-in delay

tWTL

0

-0

-

0

-

0

-0

-0

-

0

-

0

-

CLK

Data-in to precharge command

tDPL

1-

1-1

-

1-

1-

1-

1

-

1

-

CLK

Data-in to active command

tDAL

4-

4-4

-

4-

4-

4-

4

-

4

-

CLK

DQM to data-out Hi-Z

tDQZ

2-

2-2

-

2-

2-

2-

2

-

2

-

CLK

DQM to data-in mask

tDQM

0-

0-0

-

0-

0-

0-

0

-

0

-

CLK

MRS to new command

tMRD

2

-2

-

2

-

2

-2

-2

-

2

-

2

-

CLK

Precharge to data

output Hi-Z

CAS Latency = 3

tPROZ3

3

-3

-

3

-

3

-3

-3

-

3

-

3

-

CLK

CAS Latency = 2

tPROZ2

2

-2

-

2

-

2

-2

-2

-

2

-

2

-

CLK

Power down exit time

tPDE

1-

1-1

-

1-

1-

1-

1

-

1

-

CLK

Self refresh exit time

tSRE

1-

1-1

-

1-

1-

1-

1

-

1

-

CLK

1

Refresh Time

tREF

-

64

-

64

-

64

-

64

-

64

-

64

-

64

-

64

ms

Note :

1. A new command can be given tRRC after self refresh exit