1. RP2040 microcontroller chip independently designed by for 2. Dual core ARM M0+processor, operating frequency up to 133MHz flexible clock 3. Built in 264KB and 4MB on-chip Flash 4. The real stamp hole design can be directly welded and integrated into the user's independently designed base plate 5. USB1.1 Host and equipment support 6. Support low power sleep and sleep modes 7. Drag and drop downloading program identified as mass storage via USB 8. 29 GPIO pins of RP2040 are led out (20 can be led out through pin array, and the rest can only be led out by welding) 9. SPI * 2, 1202, UART * 2, 12 bit ADC * 4, PWM * 16 10. Precise on-chip clock and 11. Temperature sensor 12. On chip accelerated floating point library 13. 8 programmable IO (PIO) state machines for customized peripheral support Product name: RP2040 One Development Board Product size: 35.5x 18mm Colour:blue Material:PCB Package Contents: 1 x RP2040 One Development Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.