For Raspberry Pi RP2040-Zero Microcontroller PICO Development A D3P7 Core M4L3/
Equipped with a dual-core ARM Cortex M0+ processor, running at up to 133MHz flexible clock. Built-in 264KB SRAM and 2MB of on-chip Flash. 29 GPIO pins on RP2040 (20 pins can be pin-out, the rest can be soldered out only).