Overview
-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.
-Key Features
-RFID/NFC Tag Functionality
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- Built-in RFID coil, designed using eDesignSuite by ST-Engineering. -
- Integrated with the ST25DV04KC RFID/NFC Tag IC, offering:
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- 16 KB EEPROM for data storage. -
- Communication via the I2C bus. -
- - Data can be written to the tag using external devices, such as smartphones with RFID capabilities. -
Data Storage Support
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- Includes a Micro SD card slot for additional data storage. -
- 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. -
Power Input
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- Powered via a USB-C port delivering 5V. -
- Configured with 1 kΩ resistors on the CC pins to ensure USB-C standard compliance. -
Flexible Microcontroller Integration
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- Designed around the AtmegaXX08 series of microcontrollers, specifically the Atmega3208. -
- Compatible with other ICs in the same series and package. -
Connectivity
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- Provides connectors for UPDI and UART for programming and debugging. -
- Optional GPIO breakout for additional interfacing needs. -
Applications
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- Use as an RFID/NFC tag in systems requiring dynamic, writable RFID data storage. -
- Embedded designs requiring compact, integrated EEPROM and I2C functionality. -
- Systems needing programmable and customizable tag IC solutions. -