Feature : – RP2040 microcontroller with 2MByte Flash – Dual-core cortex M0+ at up to 133MHz – 264kByte multi-bank high performance SRAM – External Quad-SPI Flash with eXecute In Place (XIP) – High performance full-crossbar bus fabric – 30 multi-function General Purpose IO (4 can be used for ADC) – 1.8-3.3V IO Voltage (NOTE. Pico IO voltage is fixed at 3.3V) – 12-bit 500ksps Analogue to Digital Converter (ADC) – Various digital peripherals – 2 × UART, 2 × I2C, 2 × SPI, 16 × PWM channels – 1 × Timer with 4 alarms, 1 × Real Time Counter – 2 × Programmable IO (PIO) blocks, 8 state machines total – Flexible, user-programmable high-speed IO – Can emulate interfaces such as SD Card and VGA – Includes W5500 – Supports Hardwired Internet Protocols: TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE – Supports 8 Independent Hardware SOCKETs simultaneously – Internal 32 Kbytes Memory for TX/ RX Buffers – Supports High Speed Serial Peripheral Interface(SPI MODE 0, 3) – Micro-USB B port for power and data (and for reprogramming the Flash) – 40 pin 21×51 ‘DIP’ style 1mm thick PCB with 0.1″ through-hole pins also with edge castellations – 3-pin ARM Serial Wire Debug (SWD) port – 10 / 100 Ethernet PHY embedded – Supports Auto Negotiation – Full / Half Duplex – 10 / 100 Based – Built-in RJ45 – Built-in LDO Sources : https://www.wiznet.io/product-item/w5500-evb-pico/