MAS8444AS datasheet(5/9 Pages) MAS

5 / 9 page

DA8444A.005

May 31, 1996

SDA

SCL

Bit Transfer on the I C-bus

Data line

stable

(data valid)

Change

of data

allowed

1-7

Start

condition

Stop

condition

SDA

SCL

Address

Data

R/W

Ack

Complete Data Transfer

ELECTRICAL CHARACTERISTICS

CONT.

Linearity

(All voltages are with respect to GND; Tamb = 25

oC; VDD = 12V unless otherwise specified)

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Differential nonlinearity

DNL

Io = -2mA; Vmax = VDD

-0.5

0.1

0.5

LSB

Integral nonlinearity

INL

Io = -2mA; Vmax = VDD

-0.5

0.1

0.5

LSB

FUNCTIONS

2C - bus

The MAS8444A I

2C-bus interface is a receiver-only slave. Data is accepted from the I2C-bus in the following format.

0 1 0 0 A2 A1 A0 0

I3 I2 I1 I0 SD SC SB SA

D7 D6 D5 D4 D3 D2 D1 D0

Address byte

Instruction byte

First data byte

Start condition

A2, A1, A0

programmable address bits

Stop condition

I3, I2, I1, I0

instruction bits

Acknowledgement

SD, SC, SB, SA

sub-address bits

D7, D6, D5, D4, D3, D2, D2, D1, D0

data bits

2C - bus timing

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