ASI4U

Universal Actuator-Sensor Interface IC

Datasheet

Features

Description

ASI4U is a monolithic CMOS integrated circuit

certified for AS-i (Actuator Sensor Interface)

networks. AS-i networks are used for industrial

automation.

• Universal application in AS-i Slave, Mas-

ter, Repeater and Bus-Monitor compo-

nents

• Support of AS-i Complete Specification

V3.0, including all optional features

AS-i is designed for easy and simple intercon-

nection of

binary sensors and actuators. It

uses a two-wire unshielded cable to transport

power and information.

-

Synchronous Data I/O Mode

-

4 Input / 4 Output operation in

Extended Address Mode

ASI4U is a direct successor of the A²SI IC and

can replace the A²SI in existing board layouts.

-

User write protection for

Extended ID-Code 1

-

Multiplexed Parameter Port

AS-i Safety applications can use the special

AS-i Safety Mode if fault reaction time is a

concern.

• Special AS-i Safety Mode

• Floating AS-i Transmitter and Receiver for

high symmetrical high power applications

The device is available in SSOP28 package.

• On chip electronic inductor with current

drive capability of 55mA

Application Support

Configuration of the chip is handled through

programming of the on-chip E²PROM.

• Configurable LED outputs supporting all

status indication modes defined by AS-i

Complete Specification V3.0

ZMD provides a special

• Several data preprocessing functions, in-

cluding configurable data input filters and

bit selective data inverting

AS-Interface Programmer Tool

(Ordering Code: ZMD ASI-Programmer )

to ease product evaluation and selection of

different operation modes.

• Improved additional addressing channel

for easy module setup

Further application support is available through

the e-mail hotline asi@zmd.de

-

IR and CMOS input mode

-

Activation by magic sequence

• Support of 8 / 16 MHz crystals by auto-

matic frequency detection

• Clock Watchdog for high System Security

• Pin and function compatible to A²SI

© 2006, ZMD AG, Rev. 1.4

ts reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The

on furnished in this publication is preliminary and subject to changes without notice.

BZV55C39

UIN

ASIP

ASI+

UOUT

ASIN

U5R

0V

ASI-

10µF

1µF

47nF

CAP

IRD

IR Addressing

Channel

TEMD5000

LED1

FID

LED2

OSC1

8/16 MHz

DSR

OSC2

PST

DO3

DI3

DO2

DI2

DO1

DI1

DO0

DI0

GND

P0

P3

P1

P2

Copyright

All righ

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