© 2009 Microchip Technology Inc.

DS21191R-page 3

24AA128/24LC128/24FC128

TABLE 1-2:

AC CHARACTERISTICS

AC CHARACTERISTICS

Electrical Characteristics:

Industrial (I):

Automotive (E):

Param.

No.

Sym.

Characteristic

Min.

Max.

Units

Conditions

Clock frequency

—

—

—

—

100

400

400

1000

kHz

1.7V

2.5V

1.7V

2.5V

Clock high time

4000

600

600

500

—

—

—

—

ns

1.7V

2.5V

1.7V

2.5V

Clock low time

4700

1300

1300

500

—

—

—

—

ns

1.7V

2.5V

1.7V

2.5V

SDA and SCL rise time

(Note 1)

—

—

—

1000

300

300

ns

1.7V

2.5V

1.7V

SDA and SCL fall time

(Note 1)

—

—

300

100

ns

All except, 24FC128

1.7V

4000

600

600

250

—

—

—

—

ns

1.7V

2.5V

1.7V

2.5V

Start condition setup time

4700

600

600

250

—

—

—

—

ns

1.7V

2.5V

1.7V

2.5V

0

—

ns

(Note 2)

Data input setup time

250

100

100

—

—

—

ns

1.7V

2.5V

1.7V

10

4000

600

600

250

—

—

—

—

ns

1.7 V

2.5 V

1.7V

2.5 V

11

WP setup time

4000

600

600

—

—

—

ns

1.7V

2.5V

1.7V

12

WP hold time

4700

1300

1300

—

—

—

ns

1.7V

2.5V

1.7V

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.

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

application, please consult the Total Endurance™ Model, which can be obtained from Microchip’s web site

at www.microchip.com.