Contactless interfaces have become a standard requirement for modern embedded systems. From access control to self-service kiosks and vending machines, NFC (Near Field Communication) modules are essential for fast, secure, and reliable interactions. The ACM1252U‑Y3 USB NFC Reader Module is designed to meet these demands, offering robust protocol support, flexible integration, and high-speed performance for a wide range of applications.
Why ACM1252U‑Y3 Matters for Embedded Systems
Integrators and system developers face common challenges:
- Supporting multiple NFC and smart card protocols without redesigning hardware.
- Ensuring reliable read/write performance in compact enclosures.
- Reducing software integration complexity for faster deployment.
The ACM1252U‑Y3 addresses these issues directly:
- Standards Compliance: Supports ISO 14443 Type A/B, ISO 18092, MIFARE®, and FeliCa tags.
- High-Speed Communication: Contactless read/write up to 424 kbps.
- Long Read Range: Up to 50 mm depending on tag type.
- Flexible Integration: Detachable antenna for enclosure optimization and USB Full-Speed interface for plug-and-play deployment.
Technical Overview
| Specification | Details |
|---|---|
| Operating Frequency | 13.56 MHz |
| Interface | USB 2.0 Full Speed (CCID compliant) |
| Communication Speed | Up to 424 kbps |
| Supported Protocols | ISO 14443 A/B, ISO 18092, MIFARE®, FeliCa |
| Reading Distance | Up to 50 mm (tag dependent) |
| Modes | Reader/Writer, Peer-to-Peer, Card Emulation |
| Antenna | Detachable PCB |
| Firmware | USB upgradeable |
| Indicators | Bi-color LED, buzzer |
| Certifications | CE, FCC, RoHS, REACH, PC/SC, CCID |
This combination ensures compatibility with most NFC-enabled tags and devices, providing flexibility for developers integrating the module into embedded systems.

Key Application Scenarios
1. Access Control Systems
- Supports multiple card types and formats, reducing hardware fragmentation.
- Quick and reliable reading ensures smooth user entry and secure authentication.
2. Self-Service Terminals & Kiosks
- High-speed read/write minimizes wait time at points of interaction.
- USB interface allows direct connection to terminal PCs or embedded boards.
3. Vending Machines & Payment Solutions
- Compatible with cashless payment tags and loyalty cards.
- Detachable antenna simplifies mechanical integration without compromising read reliability.
4. Asset and Inventory Tracking
- Enables NFC-based logging and verification of tagged items.
- Anti-collision support ensures multiple tags in proximity do not interfere with each other.
Integration Tips for Developers
- API Support: PC/SC and CT-API ensure software compatibility across platforms.
- SAM Slot (Optional): ISO 7816-compliant SAM slot provides hardware-level security for financial transactions or secure access applications.
- Antenna Placement: Detachable antenna allows developers to optimize NFC coverage within system enclosures.
- Firmware Upgrades: USB-upgradeable firmware ensures long-term support and compatibility with evolving NFC standards.
Call to Action
- Request Technical Datasheet: Get detailed specifications for integration planning.
- OEM and Volume Inquiry: Contact for bulk orders or custom module adaptations.
- Integration Support: Consultation for embedded system integration and firmware configuration.






