Descriptions:

USR-ES1 is the Ethernet module of a SPI interface, interface is TTL level of 3.3V, power supply voltage of +3.3V, please ensure that the current is not less than 200mA, voltage is continuous and stable +3.3V.

Function features:
High speed SPI interface 80MHz
Hardware-TCPIP-protocol stack user built in, almost without understanding the complex network protocol knowledge
Supports up to 8 Socket
Support TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE protocol
Integration of the data link layer, physical layer
Support the wakeup
Support high speed serial peripheral interface (SPI model 0, 3)
Internal 32K bytes receive buffer
The embedded 10BaseT/100BaseTX Ethernet physical layer (PHY)
Support auto negotiation (10/100-Based full duplex or half duplex)
Does not support the IP patch
The working voltage of 3.3V, I/O and 5V voltage signal
LED display (full duplex or half duplex, network connection, network speed,active)
Pin type package ultra small, convenient for embedded applications
Application of C sample project

Package Include:
1 x W5500 SPI to LAN Ethernet Network Module