Board specifications:
RP2040 microcontroller chip designed by Raspberry Pi in the United Kingdom
Dual-core arm Cortex M0+ processor, flexible clock running up to 133 MHz.
264 KB of SRAM, and 2 MB of on-board flash memory.
USB-C connector, keeps it up to date, easier to use.
Castellated modules allow soldering direct to carrier boards.
USB 1.1 with device and host support.
Low-power sleep and dormant modes.
Drag-and-drop programming using mass storage over USB.
29 x multi-function GPIO pins (20 x via edge pinout, others via solder points).
2 × SPI, 2 × I2C, 2 × UART, 4 × 12-bit ADC, 16 × controllable PWM channels.
Accurate clock and timer on-chip.
Temperature sensor.
Accelerated floating-point libraries on-chip
8 x programmable I/O (PIO) state machines for custom peripheral support.

User Manual:waveshare.com/wiki/RP2040-Zero?amazon