Complete 13.56MHz ISO14443A Mifare® Classic Read/Write SMD module requiring only a PCB antenna

Ultra Compact size: 1.5 x 1.5 cm (approximately 0.6 x 0.6 inches) with SMD pads suitable for automated assembly

Supports read/write/auth operations for Mifare® Classic 1K, Mifare® Classic 4K, Mifare® Ultralight

Supports reading Unique Identifier (UID) of all ISO1443A tags, including NFC Tags, Mifare® DESFire, Mifare® Plus, Mifare® Ultralight C, and NFC devices like smartphones

Wide Operating Voltage Range: 3.3V to 5V

UART and I2C Communication Interfaces. UART baud rate: 9600bps to 115200bps, I2C up to 400KHz

UART supports DE pin for RS485 communication

Wiegand 26-bit / 34-bit / 42-bit output format support

Read range: 5-10 cm (2-4 inches), typical 7.5 cm (3 inches) depending on tag type and antenna size

Advanced non-blocking GPIO control. RGB LED support is available for customized board designs

Integrated ARM® Cortex® Microcontroller allows for advanced features and customization

Firmware Upgrade-able. Integrated Bootloader for easy firmware updates and custom firmware development

Pin-To-Pin compatible with SM1252-uSMD 125 kHz RFID SMD Module for easy integration into existing designs

Alternative form factors available: SM5210-MINI and SM5211-SMD

Long-term availability and lifecycle support

Custom firmware development and hardware customization services available

World Smallest: The Ideal OEM Contactless Card Reader Module Solution for Your Short-Range Contactless Smart Card Reader Applications

The SM5212-uSMD is a 13.56MHz ISO14443A Mifare® Classic read/write SMD module, featuring an integrated cutting-edge ARM® Cortex® microcontroller and a mixed signal processor IC from NXP®, all in a ultra compact design tailored for enhanced functionality and superior performance. The processor is equipped with proprietary firmware, developed through years of experience and customer requirements, which simplifies application integration and enhances the module’s usability across various RFID-enabled solutions.

Introduced in 2024, the SM5212-uSMD is a new product featuring an ultra-compact, surface-mount form factor. Measuring just 1.5 x 1.5 cm (approximately 0.6 x 0.6 inches), it is the smallest RFID module in the market. Despite its size, it does not compromise on functionality or performance compared to its larger counterparts, the SM5210-MINI and SM5211-SMD.

With SMD pads suitable for automated assembly, the SM5212-uSMD is ready for size-constrained applications. This cost-conscious and space-saving option enables OEMs to seamlessly integrate contactless card reading into their products, from access control systems to customer loyalty programs.

Alternative Form Factors

Standardized Packages for Versatility

Sonmicro has standardized RFID modules with MINI20, SMD20, and uSMD20 package types, offering advantages such as pin-to-pin compatibility with cross-field modules between 125 kHz RFID and 13.56 MHz RFID Modules.

SM5210-MINI

For plug-and-play usage, the SM5210-MINI features 2mm pitch low-profile pin headers, making it easy to integrate into your existing designs with compatible sockets on the motherboard. Functionalities are identical to the SM5212-uSMD, with the only difference being the form factor.

SM5211-SMD

You can also use the SM5211-SMD module for surface-mount applications, which offers the same functionality as the SM5212-uSMD but in a bigger form factor, measuring 2.2 x 2.0 cm (approximately 0.9 x 0.8 inches).

Comprehensive Support for Mifare® Classic Tags (read/write)

The SM5212-uSMD module supports all primary operations such as authentication, reading, and writing for a range of Mifare tags including Mifare® Classic 1K, Mifare® Classic 4K, and Mifare® Classic Ultralight. Compatibility extends to NTAG® and other ISO14443A NFC Tags. Certain limitations apply when writing to NFC tags.

Enhanced Compatibility Across ISO14443A Cards (read UID)

Beyond Mifare® Classic, the SM5212-uSMD expands its capabilities to read the Unique Identifier (UID) of a wider range of contactless cards. This includes popular options like Mifare® DESFire, Mifare® Plus, Mifare® Ultralight C, and NFC devices like smartphones.

Firmware and Communication Interfaces

The SM5212-uSMD is equipped with proprietary firmware that includes a standard version along with options for application-specific functionalities, offering the flexibility needed to meet unique project requirements. Our customization services allow you to tailor the firmware further to fit your specific needs.

Communication Interfaces

Supports UART and I2C, enabling seamless integration into your development environment with our comprehensive set of commands and SDKs.

Protocols and APIs

Utilizes the well-defined SPV1 protocol and a rich API for smooth integration and functionality within your projects. Facilitates a variety of commands such as activate, authenticate, read/write data blocks, enhancing interactions with Mifare® cards and other hardware components.

Auto Mode

Operates independently of an external controller, capable of reporting card UID with protocol or ASCII output, and managing peripheral devices such as buzzers and LEDs.

These features ensure that the SM5212-uSMD can integrate effortlessly into your development environment, enhancing your product with reliable and versatile performance.

Advanced Features and Benefits

Wide Range of Power Supply

The SM5212-uSMD is engineered to meet diverse power requirements with operational versatility in both 3.3V and 5V setups. The SM5212-uSMD's dual-voltage compatibility allows it to be used in a wide range of device contexts, simplifying system design and integration.

Integrated Bootloader

The SM5212-uSMD module comes equipped with an integrated bootloader. This essential feature facilitates easy firmware updates and enhancements, allowing your device to stay current with the latest features and performance improvements. It also supports the development of custom firmware, enabling tailored solutions to meet specific application needs.

Pin-to-Pin Compatibility

The SM5212-uSMD is designed for pin-to-pin compatibility with its 125 kHz RFID module counterpart, the SM1252-uSMD. This allows for seamless integration as a drop-in replacement in existing motherboard designs, with only an antenna change required. Please note that the 125 kHz counterpart, SM1252-uSMD, is not yet available. Check back for updates.

Ultra Compact Size

The SM5212-uSMD is an ultra-compact module measuring 1.5 x 1.5 cm (approximately 0.6 x 0.6 inches), equipped with SMD pads suitable for automated assembly, making it ideal for ultra space-constrained applications.

Advanced GPIO Control with RGB LED Support

General Purpose Inputs and Outputs (GPIO) are controllable with advanced timing sequences and non-blocking operations, enhancing system responsiveness and flexibility. Additionally, the SM5212-uSMD supports an RGB LED connection, allowing for visual feedback and status indication during operation.

Long-Term Availability and Support

The SM5212-uSMD is a proven, reliable product, supported by our commitment to over 10 years of lifecycle support, ensuring cost-effectiveness and viability for the duration of your project. We offer comprehensive technical support that includes updated documentation, firmware upgrades, and customized services tailored to meet your specific needs. Explore our extensive range of development tools and resources designed to streamline the integration of the SM5212-uSMD into your projects.

Customization Services

Aligned with our commitment to reducing system costs and speeding up market entry, we continuously develop new firmware versions for diverse applications and industry-wide demands. We also specialize in hardware customizations that can significantly enhance your project's design efficiency. Visit our support page to explore the extensive range of pre-developed firmware options.

Customization options available include:

Custom firmware development

Complete system design tailored to your end product

Customizable form factors, sizes, and shapes

Tailored antenna design and tuning

Integration of various communication protocols

Custom branding, packaging, and labeling

Contact us today to find out how the SM5212-uSMD can be seamlessly integrated into your project with customization options designed to meet your unique requirements.