AN3255 Datasheet, PDF(5/24 Page) STMicroelectronics – Building an RFID short-range reader using the STM8S-DISCOVERY

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AN3255 Datasheet, PDF (5/24 Pages) STMicroelectronics – Building an RFID short-range reader using the STM8S-DISCOVERY

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AN3255

Application description

1.1

Overview

This application is built around a short range RFID reader PCB developed by

STMicroelectronics. The PCB Gerber files and the user manual "CR14 and CRX14

reference design PCB Gerber files" (UM0672) are available from http://www.st.com.

This board is designed to be connected to a digital host, in this case an STM8S-

DISCOVERY, which manages data transmission and reception through an I2C interface

(see Figure 1).

The tags supported by this application must be based on ST contactless memories

compliant with ISO 14443 part2 type-B standard for the radio-frequency power and signal

interface.

This application has been tested using a tag based on ST SRI2K short range contactless

EEPROM. Refer to application note AN2866 explaining how to design a 13.56 MHz tag

antenna.

Figure 1. Short range RFID reader solution

STLINK

Resistors

RP1

RP2

SO16

footprint

I2C bus

Buzzer

STM8S-DISCOVERY

STMicroelectronics

CR14

RFID reader PCB

Doc ID 17784 Rev 1

5/24

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