ST25DV04KC
The STMicroelectronics ST25DV04KC is an NFC tag IC, with 512 bytes (4 Kbit) EEPROM user memory, operating at 13.56 MHz, under ISO/IEC 15693 NFC Forum Type 5.
Dynamic NFC/RFID tag with 4 Kbit EEPROM, energy harvesting, and I2C interface
Full Specifications
| Manufacturer | STMicroelectronics |
|---|---|
| Frequency Category | NFC |
| Frequency | 13.56 MHz |
| Protocol | ISO/IEC 15693, NFC Forum Type 5 |
| Memory | 512 bytes (4 Kbit) EEPROM user memory |
| Interface | RF (contactless), I2C (Fast Mode up to 1 MHz) |
| Temperature Range | -40°C to +85°C |
| Form Factor | UFDFPN8, TSSOP8, SO8 |
| Security | 64-bit password protection, configurable write protection, lock mechanism |
Engineering Brief
The ST25DV04KC is a dual-interface NFC/RFID tag IC combining contactless 13.56 MHz RF communication with a wired I2C interface, enabling both wireless smartphone interaction and embedded microcontroller access to the same 4 Kbit EEPROM memory. It features energy harvesting capability to power external circuits from the RF field, fast transfer mailbox for dynamic data exchange, and configurable access control with password protection. The device supports ISO/IEC 15693 and NFC Forum Type 5 standards, making it ideal for IoT applications requiring both NFC commissioning and real-time sensor data storage accessible via I2C.
Typical Applications
Standards & Compliance
Frequently Asked Questions
What is the memory size of the ST25DV04KC?
The ST25DV04KC has 512 bytes (4 Kbit) of EEPROM user memory accessible via both NFC and I2C interfaces.
Does the ST25DV04KC support both I2C and NFC communication?
Yes, the ST25DV04KC is a dual-interface device supporting contactless 13.56 MHz RF (NFC) communication and wired I2C interface (Fast Mode up to 1 MHz), allowing simultaneous access from smartphones and microcontrollers.
What NFC standards does the ST25DV04KC support?
The ST25DV04KC supports ISO/IEC 15693 and NFC Forum Type 5 standards, operating at 13.56 MHz for contactless communication.
Can the ST25DV04KC harvest energy from NFC field?
Yes, the ST25DV04KC features energy harvesting capability that can extract power from the RF field to supply external circuits, enabling battery-free operation for low-power sensors.
What security features does the ST25DV04KC have?
The ST25DV04KC provides 64-bit password protection, configurable write protection on memory areas, and lock mechanisms to prevent unauthorized access or modification of stored data.
What is the fast transfer mailbox on the ST25DV04KC?
The fast transfer mailbox is a dedicated memory area enabling dynamic data exchange between the RF and I2C interfaces, allowing real-time updates between a microcontroller and NFC reader without complex synchronization.
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