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E-magazine RFID & Wireless IoT Global Issue 02/2022
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iDTRONICs new Embedded Module: HF DESFire R835

The HF Reader R835 Series - HF Embedded Reader Series with TTL Interface (Picture: iDTRONIC)

iDTRONICs new Embedded Module: HF DESFire R835

Read & Write Function for many MIFARE® & DESFire Transponder !

iDTRONICs DESFire R835 is a new, low-cost microchip module from the Embedded Module R835 Line. The module is one of our smallest with dimensions of 3.45 × 0.58 × 0.3 cm. The integrated antenna transmits data at speeds of up to 115,200 bits per second. The DESFire R835 module is suitable for many applications within the medical sector, in vending machines for payment processing, or for access management.

The Embedded Module R835 Series contains modules with four different configurations: DESFire, PSAM, Multi-Protocol and MIFARE®.

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Excellent technical specifications

The DESFire R835 module is equipped with a 3.3 - 5 Vdc power supply. Furthermore, the device requires less than < 100 mA of power for successful operation. The existing TTL-based interface enables simple and fast integration into existing Windows, Linux, or Android systems thanks to its standard Molex connector.

Read & Write function for a wide range of transponders

The DESFire R835 module is equipped with the 13.56 MHz HF frequency. The module supports the ISO 14443A/B and ISO 15693 standards with a reading range of up to 8 cm. It can accurately read and write to MIFARE® Classic, Ultralight, DESFire, Smart MX, Plus S and Pro X transponders.

Application example: Medical devices

Inside the hospital room there are medical devices which are vital for the patient. These include ventilators, infusions or ECG devices. By integrating RFID readers, a wide variety of applications can be implemented. These help to increase patient safety and bring about a faster recovery.

These include, for example, automatic identification and authentication of consumables. On the other hand, it is possible to monitor which employee is operating the medical devices. Hierarchies may also be introduced for individual employees in order to avoid incorrect operation of the devices by medical personnel.

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The small embedded module may be easily and quickly integrated into a range of medical devices. It can withstand temperatures and liquids of up to +80 °C without any problems. Supported standards of EN 60950, EN 62369 and EN 50364 ensure safe integration.

DESFire belongs to the MIFARE family which is a trademark of NXP Semiconductors.

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Patrick Kochendörfer
Patrick Kochendörfer
Senior Product Manager
Ludwigshafen, Germany
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