Data Sheet

Rev.1.1

24.01.2013

Swissbit AG

Industriestrasse 4

Fon: +41 (0) 71 913 03 03

www.swissbit.com

Page 9

CH

– 9552 Bronschhofen

Fax: +41 (0) 71 913 03 15

email: info@swissbit.com

of 14

AC CHARACTERISTICS

3200-3.0-3-3

2700-2.5-3-3

PARAMETER

SYMBOL

MIN

MAX

MIN

MAX

Unit

ACTIVE to PRECHARGE command

40

70.000

42

70.000

ns

ACTIVE to READ with Auto

precharge

command

15

-

15

-

ns

ACTIVE to ACTIVE/AUTO

REFRESH

command period

55

-

60

-

ns

AUTO REFRESH command period

70

-

72

-

ns

ACTIVE to READ or WRITE delay

15

-

18

-

ns

PRECHARGE command period

15

-

18

-

ns

DQS read preamble

0.9

1.1

0.9

1.1

DQS read postamble

0.4

0.6

0.4

0.6

ACTIVE bank a to ACTIVE bank b

command

10

-

12

-

ns

DQS write preamble

0.25

-

0.25

-

DQS write preamble setup time

0

-

0

-

ns

DQS write postamble

0.4

0.6

0.4

0.6

Write recovery time

15

-

15

-

ns

Internal WRITE to READ command

delay

2

-

1

-

Data valid output window

N/A

ns

REFRESH to REFRESH command

interval

-

70.3

-

70.3

µs

Average periodic refresh interval

0 °C ≤ T

-

7.8

-

7.8

µs

3.9

3.9

0

-

0

-

ns

Exit SELF REFRESH to non-READ

command

70

-

75

-

ns

Exit SELF REFRESH to READ

command

200

-

200

-

Note 1: Values for AC timing, IDD, and electrical AC and DC characteristics might have been collected within the

standard temperature range and at nominal reference/supply voltage levels, but the related specifications and

device operation are guaranteed for the full voltage range specified and for the corresponding field of operation

according to the actual temperature grade of the module (extended E, I or W; refer to the environmental conditions

for more details).