This document describes the features and characteristics of the ASI4U Universal Actuator-Sensor Interface IC from ZMD AG, including its universal application in AS-i Slave, Master, Repeater, and Bus-Monitor components, support for AS-i Complete Specification V3.0, special AS-i Safety Mode, floating AS-i Transmitter and Receiver for high symmetrical high power applications, etc.
The ZMD ASI4U is a monolithic CMOS integrated circuit designed for AS‑i (Actuator Sensor Interface) networks used in industrial automation. It supports the full AS‑i V3.0 specification, offering synchronous data I/O, extended address mode, safety mode, on‑chip electronic inductor and configurable LED outputs.
The document provides absolute maximum ratings, operating conditions, package pin assignment, functional block diagrams and detailed descriptions of each functional mode, including safety‑mode recommendations and repair guidelines for AS‑i safety modules.