U3280M 데이터 시트보기 (PDF) - Atmel Corporation

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U3280M

Transponder Interface for Microcontroller

Atmel Corporation 

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

Transponder

Interface for

Microcontroller

U3280M

1. Description

The U3280M is a transponder interface for use in contactless ID systems, remote con-

trol 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

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