© 2007 Microchip Technology Inc.

Preliminary

DS21836D-page 3

25AA1024/25LC1024

TABLE 1-2:

AC CHARACTERISTICS

AC CHARACTERISTICS

Industrial (I):

Industrial (I):

Automotive (E):

Param.

No.

Sym.

Characteristic

Min.

Max.

Units

Conditions

Clock frequency

—

—

—

20

10

2

MHz

MHz

MHz

4.5

2.5

1.8

CS setup time

25

50

250

—

—

—

ns

ns

ns

4.5

2.5

1.8

CS hold time

50

100

500

—

—

—

ns

ns

ns

4.5

2.5

1.8

(Note 3)

CS disable time

50

—

ns

5

Tsu

Data setup time

5

10

50

—

—

—

ns

ns

ns

4.5

2.5

1.8

Data hold time

10

20

100

—

—

—

ns

ns

ns

4.5

2.5

1.8

CLK rise time

—

20

ns

(Note 1)

CLK fall time

—

20

ns

(Note 1)

Clock high time

25

50

250

—

—

—

ns

ns

ns

4.5

2.5

1.8

10

Clock low time

25

50

250

—

—

ns

ns

ns

4.5

2.5

1.8

11

Clock delay time

50

—

ns

12

Clock enable time

50

—

ns

13

Output valid from clock low

—

—

—

25

50

250

ns

ns

ns

4.5

2.8

1.8

14

Output hold time

0

—

ns

(Note 1)

15

Output disable time

—

—

—

25

50

250

ns

ns

ns

4.5

2.5

1.8

(Note 1)

16

HOLD setup time

10

20

100

—

—

—

ns

ns

ns

4.5

2.5

1.8

17

HOLD hold time

10

20

100

—

—

—

ns

ns

ns

4.5

2.5

1.8

Note 1: This parameter is periodically sampled and not 100% tested.

2: This parameter is not tested but established by characterization and qualification. For endurance

estimates in a specific application, please consult the Total Endurance™ Model which can be obtained

from our web site at www.microchip.com.