A²SI Advanced AS-Interface IC Description A²SI is a monolithic CMOS integrated circuit certified for AS-i (Actuator Sensor-interface) networks. AS-i networks are intended for industrial automation. The main advantage of AS-i solutions is that actuators and sensors are connected using a two-wire unshielded cable that is easy to install. This cable transports both power and information/data. AS-i network communication is based on the master-slave principle. The network can be extended (to cable lengths greater than 100m) by using the A²SI in the repeater mode configuration. A²SI is furthermore used as slave interface to sensors / actuators and as master interface. AS-i is a standard for the automation industry based on IEC 62026-2 and EN 50295. The device is available in a 28-pin SSOP (5,3 mm) package. Features · · · · · · · · · AS-i Complete Specification V2.11 compliant Integrated EEPROM Additional addressing channel using an opto-electronic interface Extended address mode operation as programmable option (up to 62 slaves) High impedance AS-i line input, additional pins for further impedance optimizations DC voltage output, approximately 24 volts, not stabilized 5 volt DC voltage output, stabilized, CMOS logic can be supplied directly (e.g. µC) LED status indicator output (compliant with the standard indication recommendation) Integrated watchdog · Temperature range -25°C to + 85°C Block Diagram 2.2 mF 5V 24V 8 MHz 10 mF U IN CAP RCAP ASI+ ASI– A2SI U OUT U5R ELECTRONIC INDUCTOR U5RD POWER SUPPLY OSC1/2 OSCILLATOR CCAP POWERFAIL DETECTION 4 RECEIVE 4 ASIP DIGITAL LOGIC DOx DIx DSR ASIN PST 4 TRANSMIT THERMAL PROTECTION GND2 0V Feature Sheet, Rev.1.0, April 10, 2002 GND1 GND Px IRD AMP IRD LED FID © ZMD AG A²SI Advanced AS-Interface IC Application The relatively small package of the A²SI integrated circuit allows to integrate the AS-interface electronic circuit within the housing of the sensor or actuator. Integrated electronic AS-I actuator in stainless steel sleeve Bihl+Wiedemann GmbH Mannheim, Germany For applications that require higher ambient temperatures or for applications that lead to a higher power dissipation of the integrated circuit (master and/or repeater applications) ZMD provides the same silicon die within a 28-pin SOP package (A²SI-E). Ordering Information Ordering Code Description Operating Temperature Range Package Type Device Marking Shipping Form A2SI-ST Standard version of A²SI -25°C to 85°C 28-pin SSOP A²SI Tubes (47 parts/tube) A2SI-SR Standard version of A²SI -25°C to 85°C 28-pin SSOP A²SI Tape-and-Reel (1500 parts/reel) A2SI-MT Pre-programmed master function -25°C to 85°C 28-pin SSOP A²SI + yellow dot Tubes (47 parts/tube) A2SI-MR Pre-programmed master function -25°C to 85°C 28-pin SSOP A²SI + yellow dot Tape-and-Reel (1500 parts/reel) Sales Office Dresden ZMD AG Grenzstraße 28 01109 Dresden, Germany Phone +49-351-8822-310 Fax +49-351-8822-337 e-mail [email protected] http://www.zmd.de Sales Office Long Island ZMD America Inc. 201 Old Country Road, Suite 204 Melville, NY 11747, USA Phone +1-631-549-2666 Fax +1-631-549-2882 e-mail [email protected] http://www.zmda.com 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. Feature Sheet, Rev.1.0, April 10, 2002 © ZMD AG