 2002 Microchip Technology Inc.

DS21189F-page 3

24AA64/24LC64

1.2

AC C

haracteristics

AC CHARACTERISTICS

V

Industrial (I):

T

Automotive (E):

T

Param.

No.

Sym

Characteristic

Min

Max

Units

Conditions

1F

CLK

Clock frequency

—

—

400

100

kHz

2.5V

1.8V

2

T

HIGH

Clock high time

600

4000

—

—

ns

2.5V

1.8V

3T

LOW

Clock low time

1300

4700

—

—

ns

2.5V

1.8V

4T

R

SDA and SCL rise time

(Note 1)

—

—

300

1000

ns

2.5V

1.8V

5T

F

SDA and SCL fall time

—

300

ns

(Note 1)

6T

600

4000

—

—

ns

2.5V

1.8V

7T

600

4700

—

—

ns

2.5V

1.8V

8T

0

—

ns

(Note 2)

9T

100

250

—

—

ns

2.5V

1.8V

10

T

600

4000

—

—

ns

2.5V

1.8V

11

T

AA

Output valid from clock

(Note 2)

—

—

900

3500

ns

2.5V

1.8V

12

T

BUF

Bus free time: Time the bus

must be free before a new

transmission can start

1300

4700

—

—

ns

2.5V

1.8V

13

T

OF

Output fall time from V

imum to V

20+0.1C

B

—

250

250

ns

2.5V

1.8V

14

T

SP

Input filter spike suppression

(SDA and SCL pins)

—50

ns

(Notes 1 and 3)

15

T

WC

Write cycle time (byte or

page)

—5

ms

—

16

—

Endurance

1M

—

cycles

25°C, V

(Note 4)

Note 1: Not 100% tested. C

2: As a transmitter, the device must provide an internal minimum delay time to bridge the undefined region

(minimum 300 ns) of the falling edge of SCL to avoid unintended generation of START or STOP conditions.

3: The combined T

4: This parameter is not tested but ensured by characterization. For endurance estimates in a specific appli-

cation, please consult the Total Endurance Model which can be obtained on Microchip’s website:

www.microchip.com.