24LC256T-ESLASHST datasheet(5/42 Pages) MICROCHIP

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 1998-2019 Microchip Technology Inc.

DS20001203W-page 5

24AA256/24LC256/24FC256

TSU:WP WP Setup Time

4000

—

1.7V

 VCC  2.5V

600

—

2.5V

 VCC  5.5V

600

—

1.7V

 VCC  5.5V (24FC256)

THD:WP WP Hold Time

4700

—

1.7V

 VCC  2.5V

1300

—

2.5V

 VCC  5.5V

1300

—

1.7V

 VCC  5.5V (24FC256)

TAA

Output Valid from Clock

—

3500

1.7 V

 VCC  2.5V (Note 2)

—

900

2.5 V

 VCC  5.5V (Note 2)

—

900

1.7V

 VCC  2.5V (24FC256)

(Note 2)

—

400

2.5 V

 VCC  5.5V (24FC256)

(Note 2)

TBUF

Bus Free Time: The time the

bus must be free before a new

transmission can start

4700

—

1.7V

 VCC  2.5V

1300

—

2.5V

 VCC  5.5V

1300

—

1.7V

 VCC  2.5V (24FC256)

500

—

2.5V

 VCC  5.5V (24FC256)

TOF

Output fall time from VIH

minimum to VIL maximum

 100 pF

10 + 0.1CB

250

All except 24FC256 (Note 1)

250

All except 24FC256 (Note 1)

TSP

Input Filter Spike Suppression

(SDA and SCL pins)

—

All except 24FC256

(Notes 1 and 3)

TWC

Write Cycle Time

(byte or page)

—5

Endurance

1,000,000

—

cycles 25°C, 5.5V, Page mode (Note 4)

TABLE 1-2:

AC CHARACTERISTICS

AC CHARACTERISTICS (Continued)

Electrical Characteristics:

Industrial (I):

VCC = +1.7V to 5.5V

TA = -40°C to +85°C

Extended (E):

VCC = +1.7V to 5.5V

TA = -40°C to +125°C

Param.

No.

Symbol

Characteristic

Min.

Max.

Units

Conditions

Note 1: Not 100% tested. CB = total capacitance of one bus line in pF.

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 TSP and VHYS specifications are due to new Schmitt Trigger inputs, which provide improved

noise spike suppression. This eliminates the need for a TI specification for standard operation.

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 website

at www.microchip.com.

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