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Ten small green circuit boards with black chips and gold pins

NuoTo

NuoTo LAN8720 Ethernet PHY Module 10pcs

SKU CH-0BZC-TMYD5

Pack of ten LAN8720 Ethernet PHY modules with RMII interface for Arduino network projects

  • CPU TypeOther
  • Ready for 10/100 Ethernet with RMII interface
  • Single 3.3 V supply simplifies board power design
  • Auto-MDIX removes need for crossover cables
  • 24-pin QFN package suits compact layouts
  • Onboard 1.2 V regulator eases power management

10-Pack LAN8720 Ethernet PHY Modules

This pack contains ten LAN8720 Ethernet transceiver boards designed for microcontroller projects. Each module implements a 10/100 physical layer interface using the reduced pin count RMII connection. They suit hobbyists and developers adding wired networking to Arduino-compatible or similar embedded platforms.

RMII Interface and Voltage Constraints

The modules communicate via RMII, which reduces GPIO usage compared to MII but limits throughput to 100 Mbps. Operation requires a single 3.3 V supply; the onboard 1.2 V regulator handles the core voltage. I/O pins tolerate 1.6 V to 3.6 V, so direct connection to 5 V logic is not supported without level shifting.

24-Pin QFN LAN8720 Chip

The transceiver uses a 24-pin QFN package measuring 4x4 mm in a lead-free RoHS-compliant finish. This specific package defines the board footprint and soldering requirements. Buyers needing a different PHY package, gigabit speeds, or Power-over-Ethernet support must choose another module.

Highlights

  • Ready for 10/100 Ethernet with RMII interface
  • Single 3.3 V supply simplifies board power design
  • Auto-MDIX removes need for crossover cables
  • 24-pin QFN package suits compact layouts
  • Onboard 1.2 V regulator eases power management

Specifications

CPU TypeOther

Questions about this item

How many LAN8720 modules come in the pack?

The pack contains 10 modules, each with a 24-pin QFN chip and an integrated 1.2V regulator for single 3.3V supply operation.

What Ethernet speed does the LAN8720 PHY deliver in a real system?

The transceiver handles 10/100 Mbps physical layer signalling, so actual throughput will be capped at 100 Mbps when connected via its RMII interface.

What interface does the module use and what does it limit?

The board exposes a reduced pin count RMII interface with I/O voltage from 1.6V to 3.6V, limiting the connection to 100 Mbps Ethernet PHY performance.

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