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38 lines
1.7 KiB
Markdown
38 lines
1.7 KiB
Markdown
# RFID-Transponder
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Overview
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This project is a compact and versatile PCB design featuring an RFID/NFC tag IC. It includes components for writing and managing data on the RFID tag, modern power input options, and flexible microcontroller integration.
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Key Features
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RFID/NFC Tag Functionality
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Built-in RFID coil, designed using eDesignSuite by ST-Engineering.
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Integrated with the ST25DV04KC RFID/NFC Tag IC, offering:
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16 KB EEPROM for data storage.
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Communication via the I2C bus.
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Data can be written to the tag using external devices, such as smartphones with RFID capabilities.
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Data Storage Support
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Includes a Micro SD card slot for additional data storage.
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Utilizes a 74LVC125 IC for safe voltage level shifting between the 5V logic of the microcontroller and the 3.3V logic of the Micro SD card.
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Power Input
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Powered via a USB-C port delivering 5V.
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Configured with 1 kΩ resistors on the CC pins to ensure USB-C standard compliance.
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Flexible Microcontroller Integration
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Designed around the AtmegaXX08 series of microcontrollers, specifically the Atmega3208.
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Compatible with other ICs in the same series and package.
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Connectivity
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Provides connectors for UPDI and UART for programming and debugging.
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Optional GPIO breakout for additional interfacing needs.
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Applications
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Use as an RFID/NFC tag in systems requiring dynamic, writable RFID data storage.
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Embedded designs requiring compact, integrated EEPROM and I2C functionality.
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Systems needing programmable and customizable tag IC solutions.
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