24AA256/24LC256

DS21203C-page 2

© 1998 Microchip Technology Inc.

1.0

ELECTRICAL

CHARACTERISTICS

1.1

Maximum Ratings*

Storage temperature ...................................................-65

°C to +150°C

Ambient temp. with power applied...............................-65

°C to +125°C

Soldering temperature of leads (10 seconds) ...........................+300

°C

ESD protection on all pins

.................................................................≥ 4 kV

*Notice: Stresses above those listed under “Maximum Ratings” may

cause permanent damage to the device. This is a stress rating only and

functional operation of the device at those or any other conditions

above those indicated in the operational listings of this specification is

not implied. Exposure to maximum rating conditions for extended peri-

ods may affect device reliability.

TABLE 1-1

PIN FUNCTION TABLE

FIGURE 1-1:

BUS TIMING DATA

Name

Function

A0, A1, A2 User Configurable Chip Selects

Ground

SDA

Serial Data

SCL

Serial Clock

WP

Write Protect Input

+1.8 to 5.5V (24AA256)

+2.5 to 5.5V (24LC256)

TABLE 1-2

DC CHARACTERISTICS

All parameters apply across the

specified operating ranges unless

otherwise noted.

Industrial (I):

Tamb = -40

°C to +85°C

Tamb = -40

°C to 125°C

Parameter

Symbol

Min

Max

Units

Conditions

A0, A1, A2,

SCL, SDA, and WP pins:

High level input voltage

—V

Low level input voltage

—

V

V

Vcc

≥ 2.5V

Vcc < 2.5V

Hysteresis of Schmitt Trigger

inputs (SDA, SCL pins)

—V

≥ 2.5V (Note)

Low level output voltage

—

0.40

V

Input leakage current

-10

10

Output leakage current

-10

10

Pin capacitance

(all inputs/outputs)

—10

pF

Operating current

—

3

mA

—

400

Standby current

—1

µA

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

WP

(unprotected)

(protected)

SCL

SDA

IN

SDA

OUT