Description

The U3280M is a transponder interface for use in contactless ID systems, remote control systems, tag and sensor applications. It supplies the microcontroller with power from an RF field via an LC-resonant circuit and it enables contactless bi-directional data communication via this RF field. It includes power management that handles switching between the magnetic field and a battery power supply. To store permanent data like an identifier code and configuration data, the U3280M includes a 512-bit EEPROM with a serial interface.

Features

• Contactless Power Supply and Communication Interface

• Up to 10 kbaud Data Rate (R/O)

• Power Management for Contactless and Battery Power Supply

• Frequency Range 100 kHz to 150 kHz

• 32 x 16-bit EEPROM

• Two-wire Serial Interface

• Shift Register Supported Bi-phase and Manchester Modulator Stage

• Reset I/O Line

• Field Clock Extractor

• Field and Gap Detection Output for Wake-up and Data Reception

• Field Modulator with Energy-saving Damping Stage

Applications

• Main Areas

   – Access Control

   – Telemetry

   – Wireless Sensors

• Examples:

   – Wireless Passive Access and Active Alarm Control for Protection of Valuables

   – Contactless Position Sensors for Alignments of Machines

   – Contactless Status Verification and/or Data Readout from Sensors