Item Type: Ethernet Network Module W5500 Module Pin Header Description: 3.3V: 3.3V power input pin. 5V: 5V power input pin. MISO: SPI master input slave output pin. GND: Power ground pin. MOSI: SPI master output slave input pin. RST: W5500 hardware initialization pin (active low). SCS: SPI SLAVE selection pin (active low). INT: W5500 interrupt pin (active low). 1、Network Module: W5500 module is an Ethernet module integrated with full hardware TCP IP protocol stack. 2、Practical Uses: No need to write the underlying Ethernet codes to implement the TCP/IP protocol stack, support TCP, UDP, IPv4, ICMP, ARP, IGMP, and PPPoE protocols, support 10/100MBPS transmission rate. 3、Easier Working: Supports 8 independent ports to work at the same time, also supports 5V or 3.3V power supply, which is convenient to use in different single chip systems. The communication method between the module and the single chip is SPI protocol, which supports speeds up to 80MHz. 4、Simple to Use: Supports sleep mode and wake up on the network, internally integrate 32K bytes on chip cache For Ethernet packet processing. Only need some simple for Socket programming to realize the Ethernet application. 5、More Convenience: Routine source codes based on 51 single chip microcomputer and STM32 single chip microcomputer in client, server and UDP 3 working modes is offered. 1 x Ethernet Network Module 1 x Flat Cable