Overview
The ST25DV64K-IER6S3, produced by STMicroelectronics, is a dynamic NFC/RFID tag IC that offers a versatile solution for both contact and contactless memory applications. This device is part of the ST25DVxxx family, which includes the ST25DV04K, ST25DV16K, and ST25DV64K, each providing different memory capacities. The ST25DV64K specifically features 64 Kbits of electrically erasable programmable memory (EEPROM).
The device supports two primary interfaces: an I2C serial link that operates from a DC power supply, and an RF link that is activated when the device acts as a contactless memory powered by the received carrier electromagnetic wave. This dual-interface capability allows for fast data transfer between the I2C and RF worlds, enhancing the device's functionality in various applications.
Key Specifications
| Parameter | Specification |
|---|---|
| Memory Capacity | 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 |
| RF Interface | Based on ISO/IEC 15693, NFC Forum Type 5 tag |
| Write Time | Typical 5 ms for 1 byte (I2C), typical 5 ms for 1 block (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), -40 to 125 °C (SO8N and TSSOP8 only) |
| Package Options | 8-pin, 10-ball, and 12-pin packages |
Key Features
- I2C Interface: Two-wire I2C serial interface supporting 1 MHz protocol.
- Contactless Interface: Based on ISO/IEC 15693 and NFC Forum Type 5 tag, certified by the NFC Forum.
- Fast Transfer Mode: Fast data transfer between I2C and RF interfaces using a 256-byte dedicated buffer.
- Energy Harvesting: Analog output pin to power external components.
- Data Protection: User memory protectable in read and/or write by three 64-bit passwords in RF and one 64-bit password in I2C.
- GPO Pin: Interruption pin configurable on multiple RF events.
- Low Power Mode: Available in 10-ball and 12-pin packages.
- RF Management: RF command interpreter enabled/disabled from I2C host controller.
Applications
The ST25DV64K-IER6S3 is versatile and can be used in a variety of applications, including:
- Industrial Automation: For tracking and managing inventory, and for implementing smart manufacturing processes.
- Healthcare: In medical devices and patient tracking systems.
- Consumer Electronics: In smart home devices, wearables, and other IoT applications.
- Logistics and Supply Chain: For asset tracking and inventory management.
- Smart Cities: In urban infrastructure and public services management.
Q & A
- What is the memory capacity of the ST25DV64K-IER6S3?
The ST25DV64K-IER6S3 has up to 64 Kbits of electrically erasable programmable memory (EEPROM).
- What interfaces does the ST25DV64K-IER6S3 support?
The device supports both an I2C serial interface and an RF contactless interface based on ISO/IEC 15693 and NFC Forum Type 5.
- What is the supply voltage range for the ST25DV64K-IER6S3?
The supply voltage range is from 1.8 to 5.5 V.
- How long does it take to write data to the ST25DV64K-IER6S3?
The write time is typically 5 ms for 1 byte via I2C and 5 ms for 1 block via RF.
- What is the data retention period of the ST25DV64K-IER6S3?
The data retention period is 40 years.
- What are the temperature ranges for the ST25DV64K-IER6S3?
The temperature range is from -40 to 85 °C (Range 6), -40 to 105 °C (Range 8), and -40 to 125 °C (SO8N and TSSOP8 only).
- What package options are available for the ST25DV64K-IER6S3?
The device is available in 8-pin, 10-ball, and 12-pin packages.
- Does the ST25DV64K-IER6S3 support energy harvesting?
Yes, it has an analog output pin to power external components through energy harvesting.
- How is data protected in the ST25DV64K-IER6S3?
The user memory is protectable in read and/or write by three 64-bit passwords in RF and one 64-bit password in I2C.
- What is the purpose of the GPO pin in the ST25DV64K-IER6S3?
The GPO pin is configurable on multiple RF events such as field change, memory write, activity, Fast Transfer end, user set/reset/pulse.
