The ST25D application-specific series combines NFC connectivity with a PWM output in a single chip. This dynamic tag enables wireless communication with smartphones or other NFC devices while providing a direct hardware control signal, such as driving LEDs or controlling actuators, without the need for extra components.
What is an ST25D application-specific dynamic tag?
The series offers a simple solution to add wireless short-range connectivity to specific applications. The dynamic tag integrates a standardized NFC Forum Type 5 interface, ensuring compatibility with smartphones and professional NFC/RFID readers. Additionally, the tag offers one or two wired PWM interfaces on the other side, removing the need for a microcontroller. This dual architecture allows for quick, contactless communication alongside straightforward control signal output.
Applications
Setting a power level, speed or rotor position is a common way to control motors in industrial and consumer applications and is easily handled using PWM (pulse width modulation) signals. Combining NFC connectivity with PWM outputs in a single device delivers high added value and a cost-optimized solution for a wide range of applications including lighting, motor control, power supplies and many more.
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Product types
The ST25DV-PWM series offers either one or two independent PWM outputs to enable numerous use cases. The series comes with robust package options and an extended temperature range by default, to support harsh operating conditions.
- NFC Forum Type 5
- ISO15693
- 1x or 2x independent PWM outputs, 1.8 to 5.5 V
- High accuracy over full temperature range
- Industrial grade (up to +105°C)
- Low BOM cost (crystal-free)
- 2-kbit EEPROM user data
- TruST25TM digital signature
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Benefits
- Compliant with Zhaga book24 and book25, simplifying lighting product design
- Cost-optimized solution for entry-level applications
- Robust solution with best user experience even in harsh environments
- Highly reliable EEPROM memory (industrial-grade)