FN9130 Rev 1.00

Page 10 of 11

Jul 2004

ISL6421

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ADDRESS Pin

Connecting this pin to GND forces the chip I2C interface

address to 0001000; applying a voltage >2.7V forces the

address to 0001001, as shown below.

I2C Electrical Characteristics

TABLE 7. ADDRESS PIN CHARACTERISTICS

VADDR

MIN

TYP

MAX

Vaddr-1

“0001000”

0V

-

2.0V

Vaddr-2

“0001001”

2.7V

-

5.0V

TABLE 8. I2C SPECIFICATIONS

PARAMETER

TEST

CONDITION

MIN

TYP

MAX

Input Logic High,

VIH

SDA, SCL

0.7 x VDD

Input Logic Low,

VIL

SDA, SCL

0.3 x VDD

Input Logic

Current, IIL

SDA, SCL;

0.4V < Vin < 4.5V

10

A

SCL Clock

Frequency

0

100kHz

400kHz