– 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 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¡È 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)