U3280M

Features www.DataSheet4U.com 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 Transponder Interface for Microcontroller U3280M 1. 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. 4688D–RFID–03/07 Figure 1-1. Block Diagram U3280M Transponder Interface VField regulator Damping stage Coil 1 512-bit EE...