Raspberry PI PICO + Ethernet on the same board and gives access to all pins which are available on Raspberry PI PICO Board.
Features
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
Includes W5100S
Supports Hardwired Internet Protocols: TCP, UDP, WOL over UDP, ICMP, IGMPv1/v2, IPv4, ARP, PPPoE
Supports 4 Independent Hardware SOCKETs simultaneously
Internal 16 Kbytes Memory for TX/ RX Buffers
SPI Interface
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(RB1-125BAG1A)
Built-in LDO (LM8805SF5-33V)