ASI4U
Universal Actuator-Sensor Interface IC
Datasheet
Features
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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
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Synchronous Data I/O Mode
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4 Input / 4 Output operation in
Extended Address Mode
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User write protection for
Extended ID-Code 1
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Multiplexed Parameter Port
Special AS-i Safety Mode
Floating AS-i Transmitter and Receiver for
high symmetrical high power applications
On chip electronic inductor with current
drive capability of 55mA
Configurable LED outputs supporting all
status indication modes defined by AS-i
Complete Specification V3.0
Several data preprocessing functions, in-
cluding configurable data input filters and
bit selective data inverting
Improved additional addressing channel
for easy module setup
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IR and CMOS input mode
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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
BZV55C39
ASI+
ASI-
IR Addressing
Channel
TEMD5000
8/16 MHz
ASIP
ASIN
0V
IRD
FID
OSC1
OSC2
DO3
DO2
DO1
DO0
GND
P3
P2
Description
ASI4U is a monolithic CMOS integrated circuit
certified for AS-i (Actuator Sensor Interface)
networks. AS-i networks are used for industrial
automation.
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.
ASI4U is a direct successor of the A²SI IC and
can replace the A²SI in existing board layouts.
AS-i Safety applications can use the special
AS-i Safety Mode if fault reaction time is a
concern.
The device is available in SSOP28 package.
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Application Support
Configuration of the chip is handled through
programming of the on-chip E²PROM.
ZMD provides a special
AS-Interface Programmer Tool
(Ordering Code: ZMD ASI-Programmer )
to ease product evaluation and selection of
different operation modes.
Further application support is available through
the e-mail hotline
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UIN
UOUT
U5R
CAP
LED1
LED2
DSR
PST
DI3
DI2
DI1
DI0
P0
P1
47nF
1µF
10µF
Copyright © 2006, ZMD AG, Rev. 1.4
All rights 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
Information furnished in this publication is preliminary and subject to changes without notice.
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ZMD [ Zentrum Mikroelektronik Dresden AG ]
