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ST25DV04K-IER6T3

ST25DV04K-IER6T3

STMicroelectronics
RFID Transponder IC 13.56MHz ISO 15693 I2C 1.8V ~ 5.5V 8-TSSOP (0.173", 4.40mm Width)
Active4,170 in stock

Overview

The ST25DV04K-IER6T3 is a dual-interface NFC Forum Type 5 RFID transponder that features 4 Kbits of EEPROM and both an ISO 15693 RF interface and an I2C serial link. It functions as a bridge between wireless NFC readers and a local microcontroller, operating across a wide supply voltage range of 1.8V to 5.5V.

Why Choose This Part

The IC includes a unique energy harvesting mode that can power external low-power components using the RF field from the reader. It also features a programmable GPO pin for event-driven interrupts and a fast transfer mode for high-speed data exchange.

Applications

Zero-Power Configuration
Allows device parameters or network credentials to be programmed via a smartphone while the main system power is completely off.
NFC Data Logger
Uses the 512-byte EEPROM to store sensor logs that can be retrieved wirelessly even if the battery has failed.
NFC-to-I2C Bridge
Facilitates fast data transfer between a handheld reader and a host MCU for firmware updates or diagnostic downloads.

Key Specifications

Type RFID Transponder
Frequency 13.56MHz
Interface I2C
Standards ISO 15693
Mounting Type Surface Mount
Package / Case 8-TSSOP (0.173", 4.40mm Width)
Voltage - Supply 1.8V ~ 5.5V
Operating Temperature -40degC ~ 85degC
Supplier Device Package 8-TSSOP

Getting Started

To evaluate this chip, use the X-NUCLEO-NFC04A1 expansion board which is compatible with the STM32 Nucleo ecosystem. ST provides the ST25DX_Discovery_Software_Pack which includes drivers and application examples for I2C communication and energy harvesting management.

Also Consider

NTAG I2C plus NXP - A popular alternative for NFC-to-I2C bridging with field detection and an SRAM buffer for high-speed pass-through.