A2SI-L
A2SI-L is Low End Device AS-Interface IC manufactured by Zentrum Mikroelektronik Dresden.
Features
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- AS-i plete Specification V2.11 pliant Integrated EEPROM Extended address mode operation as programmable option (up to 62 slaves) Dedicated IO-port structure: two data inputs, two data outputs, no parameter port pins Optional PWM outputs Integrated watchdog Temperature range -25°C to + 85°C
Description
A²SI-Lite (A²SI-L) is a monolithic CMOS integrated circuit certified for AS-i (Actuator Sensor-interface) networks. AS-i networks are intended for industrial automation. This integrated circuit is dedicated to be used as simplified interface IC for key control panels, simple sensors and small actuators. The main advantage of AS-i solutions is that actuators and sensors are connected using a twowire unshielded cable that is easy to install. This cable transports both power and information/data. AS-i network munication is based on the master-slave principle. The network can be extended (to cable lengths greater than 100m) by using the A²SI or A²SI-E in the repeater mode configuration. AS-i is a standard for the automation industry based on IEC 62026-2 and EN 50295. The device is available in a 14 and 16-pin SOP (150 mils) package.
Block Diagram
10u F
100n F 16MHz VIN OSC1 OSC2
Slave electronics supply voltage
18 m H
CAP 1u F 100n F
5V
Power Supply
Power on Reset
Oscillator
ASI-SW A²SI-L
Pulse Width Modulation
ASI +
ASIP
Receiver
DIGITAL LOGIC
ASI ASIN
Output Stages
DO0 DO1 DI2 DI3
Transmitter
Two outputs, e.g. interconnced to push button LEDs Two inputs, e.g. interconnced to push button contacts
0V
UART State Machine Ports
Input Stages
Thermal Protection EEPROM
TEST1
TEST2
Copyright © 2005 ZMD AG Rev. 2.0 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.
A²SI-Lite 14 / A²SI-Lite 16
Low End Device...