Datasheet DEMO-CR95HF-A Datasheet (ST)

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Demonstration kit for the CR95HF 13.56 MHz transceiver IC

Features

■ Ready to use printed circuit board

– CR95HF multiprotocol transceiver IC – STM32F103CB 32-bit microcontroller – 47 x 34 mm 13.56 MHz inductive etched

antenna and tuning components

– USB-B connector for communication with

host PC and demonstration board powering

– USB connect/disconnect jumper (must be

left in default state)

– LED indicating completion of board

initialization – Microcontroller reset button – JTAG connector for microcontroller

firmware upgrade and debug

■ USB cable

■ Demonstration tags

– ISO15693 tag: LRI2K mounted on a

45 x 75 mm antenna – ISO 15693 dual interface EEPROM

memory: M24LR64-R mounted on a

15 x 15 mm double side etched antenna

■ Associated Firmware and PC software

– On-board demonstration firmware to

communicate with the host PC through the

USB bus. – PC software to communicate with

ISO15693 and dual interface EEPROM

Description

The DEMO-CR95HF-A is a demonstration kit which allows to evaluate the performances of ST CR95HF 13.56 MHz multiprotocol contactless transceiver. It includes a ready-to-use board to interface with the CR95HF host PC demonstration software through an USB interface.

The DEMO-CR95HF-A is powered through the USB bus and no external power supply is required. It includes a CR95HF contactless transceiver, a 47 x 34 mm 13.56 MHz inductive etched antenna and its associated tuning components.

By default, the CR95HF communicates with the STM32F103CB 32-bit MCU via the SPI bus. The interface can then be changed to UART.

Figure 1. Functional block diagram

The DEMO-CR95HF-A is delivered with the following firmware and software which can be downloaded from http://www.st.com:

● STM32 DEMO-CR95HF-A-application-firmware: on-board demonstration firmware

allowing the CR95HF and the host PC to communicate through the USB bus

● M24LRxx_application_software: a PC software that manages the communications with

the ISO15693 and Dual Interface EEPROM tags.

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DEMO-CR95HF-A Hardware configuration

Hardware configuration

The DEMO-CR95HF-A demonstration board can use either the UART or the SPI as external serial interface. Two solder bridges, SSI0 and SSI1, allow choosing the serial interface (see

Ta bl e 1 ).

The SPI or UART is then automatically enabled by the CR95HF at power-on.

Figure 2 shows the board configured to use the SPI interface (default configuration).

Table 1. Solder bridge configuration

Hardware configuration Serial interface

UART

Figure 2. DEMO-CR95HF-A with SPI selected

SPI

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Revision history DEMO-CR95HF-A

Revision history

Table 2. Document revision history

Date Revision Changes

22-Apr-2011 1 Initial release.

Changed inductive etched antenna to 47x34 mm.

25-Jul-2011 2

Added Section : Hardware configuration . Updated disclaimer on last page.

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DEMO-CR95HF-A

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