Overview
The ST25DV64K-IER6T3, produced by STMicroelectronics, is a dynamic NFC/RFID tag IC that offers 64 Kbits of electrically erasable programmable memory (EEPROM). This device features two primary interfaces: an I2C serial link that can be operated from a DC power supply, and an RF link activated when the device acts as a contactless memory powered by the received carrier electromagnetic wave. The ST25DV64K is part of the ST25DVxxx family, which includes devices with varying memory capacities, and is certified by the NFC Forum as a Type 5 tag. It supports ISO/IEC 15693 and NFC Forum Type 5 recommendations, making it versatile for various applications.
Key Specifications
| Specification | Details |
|---|---|
| Memory | Up to 64 kbits of EEPROM |
| I2C Interface | Two-wire I2C serial interface, supports 1 MHz protocol |
| Supply Voltage | Single supply voltage: 1.8 to 5.5 V |
| Contactless Interface | Based on ISO/IEC 15693, NFC Forum Type 5 tag |
| Write Time | Typical 5 ms for 1 byte from I2C, typical 5 ms for 1 block from RF |
| Data Retention | 40 years |
| Write Cycles Endurance | 1 million at 25 °C, 600 k at 85 °C, 500 k at 105 °C, 400 k at 125 °C |
| Temperature Range | -40 to 85 °C (Range 6), -40 to 105 °C (Range 8 for UDFPN8 and UDFPN12), -40 to 125 °C (Range 8 for SO8N and TSSOP8) |
| Package | 8-pin (TSSOP-8L), ECOPACK2 (RoHS compliant) |
Key Features
- I2C interface with 1 MHz protocol support
- Contactless interface based on ISO/IEC 15693 and NFC Forum Type 5
- Fast transfer mode between I2C and RF interfaces using a 256-byte dedicated buffer
- Energy harvesting feature with an analog output pin to power external components
- Data protection with configurable areas protectable by 64-bit passwords in both I2C and RF modes
- General Purpose Output (GPO) pin for RF event notifications
- Low power mode available in 10-ball and 12-pin packages
- Internal tuning capacitance of 28.5 pF
Applications
The ST25DV64K-IER6T3 is suitable for a wide range of applications, including but not limited to:
- Industrial automation and control systems
- Inventory management and tracking
- Smart home and IoT devices
- Healthcare and medical devices
- Access control and security systems
- Consumer electronics with NFC capabilities
Q & A
- What is the memory capacity of the ST25DV64K-IER6T3?
The ST25DV64K-IER6T3 has up to 64 kbits of EEPROM. - What are the supported interfaces of the ST25DV64K-IER6T3?
The device supports both I2C and RF interfaces. - What is the operating voltage range of the ST25DV64K-IER6T3?
The device operates with a single supply voltage from 1.8 to 5.5 V. - What are the data retention and write cycle endurance of the ST25DV64K-IER6T3?
The device has a data retention of 40 years and write cycle endurance of 1 million at 25 °C, 600 k at 85 °C, 500 k at 105 °C, and 400 k at 125 °C. - Does the ST25DV64K-IER6T3 support energy harvesting?
Yes, the device features an energy harvesting capability with an analog output pin to power external components. - How does the GPO pin function in the ST25DV64K-IER6T3?
The GPO pin is configurable to provide notifications for various RF events such as field change, memory write, activity, and fast transfer end. - What are the package options available for the ST25DV64K-IER6T3?
The device is available in 8-pin TSSOP-8L packages and is ECOPACK2 (RoHS compliant). - What is the temperature range for the ST25DV64K-IER6T3?
The operating temperature range is from -40 to 85 °C (Range 6), -40 to 105 °C (Range 8 for UDFPN8 and UDFPN12), and -40 to 125 °C (Range 8 for SO8N and TSSOP8). - Is the ST25DV64K-IER6T3 certified by any standards?
Yes, it is certified by the NFC Forum as a Type 5 tag and supports ISO/IEC 15693 standards. - What is the purpose of the fast transfer mode in the ST25DV64K-IER6T3?
The fast transfer mode enables fast data transfer between the I2C and RF interfaces using a 256-byte dedicated buffer.
