MLX90132 transceiver, mainly used in automotive NFC-RFID wireless access control
Melexis’ MLX90132 is a 13.56MHz fully integrated multi-protocol NFC/RFID transceiver that can handle sub-carrier frequencies of 106kHz~848kHz, up to 848kbps. The dual-channel driver architecture reduces the number of external components and can provide up to 70mW to a suitable antenna load. RF power. The device is compatible with ISO/IEC 18092 (NFC), ISO/IEC 14443 A1 and B2, ISO/IEC 15693 and ISO/IEC 18000-3 mode 1, mainly used in car access and starting, car engine anti-theft, car diagnosis and car lease.
MLX90132 is a 13.56MHz, fully integrated, multi-protocol RFID/NFC receiver IC. It is designed to handle sub-carrier frequencies from 106kHz to 848 kHz and up to 848kbits/s.
The MLX90132 dual drive architecture requires only a minimum number of external support components and allows the transmitter to provide up to 70mW of RF power for the appropriate antenna load. The transmitted power can be applied to most short to medium distance applications.
Figure 1 Simplified block diagram of MLX90132
Figure 2 MLX90132 typical application circuit
Figure 3 MLX90132 external antenna network
MLX90132 embeds tag emulation function to support NFC. The enhanced tag and domain detection functions have achieved a significant reduction in consumption in RFID reader configuration and NFC mode.
Utilizing advanced bit and frame decoding functions, the digital part of MLX90132 can handle the lower protocol layer from API to physical layer.
It includes a digital demodulator using sub-carrier detection and programmable bit/signal encoder/decoder. It also has start and stop bits, extra guarantee time (EGT), frame start and stop (SOF/EOF) and CRC.
Its 256-byte buffer buffer allows buffering of the entire RFID frame. The SPI/UART communication port ensures easy connection with major microcontrollers, especially low-cost products.
Figure 4 Block diagram of MLX90130/32 antenna circuit
Main features of MLX90132
• Comply with ISO/IEC 18092 (NFC) requirements
• Meet the requirements of ISO/IEC 14443 A1 and B2
• Meet the requirements of ISO/IEC 15693
• Meet the requirements of ISO/IEC 18000-3 Mode 1
• Standard SPI interface with 256-byte buffer
• High-speed communication (848kbits/s)
• Embedded RF domain and TAG detector
MLX90132 application
• Car access and start
• Personalization of the car
•Car diagnosis
•Car rental
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