Specification Features Uses RP2040 microcontroller chip The RP2040 microcontroller is equipped with a dual-core ARM Cortex M0+ processor. 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 The device is equipped with a 264KB SRAM and 2MB of on-chip Flash. True postage stamp hole design for direct solder integration into user-designed backplanes. USB1.1 host and device support USB1.1 host and device support. Low power sleep and hibernation modes supported Low power sleep and hibernation modes Drag-and-drop program download via USB recognition for mass storage 29 GPIO pins on RP2040 (20 pins can be pin-out, the rest can be soldered out only). 2 SPI, 2 12C, 2 UART, 4 12-bit ADCs, 16 controllable PWM channels. Precise on-chip clocks and timers Precise on-chip clock and timer. Temperature sensors Temperature sensors. On-chip accelerated floating point library 8 programmable I/O (PIO) state machines for custom peripheral support package 1 X development board