U2270B データシートの表示（PDF） - Atmel Corporation

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U2270B

Read/Write Base Station

Atmel Corporation 

Features

• Carrier Frequency fosc 100 kHz to 150 kHz

• Typical Data Rate up to 5 Kbaud at 125 kHz

• Suitable for Manchester and Bi-phase Modulation

• Power Supply from the Car Battery or from 5V Regulated Voltage

• Optimized for Car Immobilizer Applications

• Tuning Capability

• Microcontroller-compatible Interface

• Low Power Consumption in Standby Mode

• Power-supply Output for Microcontroller

Applications

• Car Immobilizers

• Animal Identification

• Access Control

• Process Control

Read/Write

Base Station

U2270B

1. Description

The U2270B is an IC for IDIC® read/write base stations in contactless identification

and immobilizer systems.

The IC incorporates the energy-transfer circuit to supply the transponder. It consists of

an on-chip power supply, an oscillator, and a coil driver optimized for automotive-spe-

cific distances. It also includes all signal-processing circuits which are necessary to

transform the small input signal into a microcontroller-compatible signal.

4684E–RFID–02/08

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