LAN8720AI-CP-TR is a single-port 10/100 industrial Ethernet PHY IC by Microchip with simplified RMII interface in QFN32 package, industrial temp -40~+85℃. Integrated adaptive cable equalization and surge ESD protection, the most popular Fast Ethernet PHY for STM32, PIC and other 32-bit MCUs, widely deployed in embedded gateways & industrial DAQ boards.
Specifications
1. Speed: Auto-negotiated 10 / 100 Mbps Fast Ethernet
2. Host Interface: RMII single 50MHz clock simplified interface
3. Package: QFN-32 with exposed thermal pad
4. Temp Grade: Industrial -40℃ ~ +85℃
5. Power Supplies: 3.3V analog rail, 1.8V digital IO core
6. Features: Auto-MDI/MDIX, cable loss compensation, low-power power-down mode
Key Features
1. RMII single 50MHz clock cuts IO pin count by half vs MII, shrinking PCB footprint
2. Ultra-compact QFN32 package ideal for miniature embedded main control boards
3. Wide industrial temperature + ±15kV ESD immunity for cabinet & field outdoor hardware
4. Adaptive cable equalization supports stable communication over 120m Fast Ethernet cable
5. Compatible with full STM32/PIC/SAM MCU families with mature open-source driver code
Typical Applications
1. STM32 embedded Linux gateways, serial device servers, IoT data collection terminals
2. Compact PLCs, HVAC & PV data acquisition control boards
3. Auxiliary IO Ethernet expansion modules for machine vision systems
4. Ethernet data upload units for EV chargers & energy storage BMS