Features: 2 × SPI, 2 × I2C, 2 × UART, 4 × 12-bit ADC, 16 × controllable PWM channels. 264KB of SRAM, and 2MB of on-board Flash memory. 29 × multi-function GPIO pins (20× via edge pinout, others via solder points). 8 × Programmable I/O (PIO) state machines for custom peripheral support. Accelerated floating-point libraries on-chip. Accurate clock and timer on-chip. Castellated module allows soldering direct to for carrier boards. Drag-and-drop programming using mass storage over USB. Dual-core Arm Cortex M0+ processor, flexible clock running up to 133 MHz. Low-power sleep and dormant modes. Temperature sensor. USB 1.1 with device and host support. USB-C connector, keeps it up to date, easier to use. brand new and high quality RP2040 microcontroller chip designed by in the United Kingdom. Specifications: Type: RP2040-Zero , Zero for M(optional) USB Type-C connector W25Q16JVUXIQ 2MB NOR-Flash BOOT button：press it when resetting to enter download mode RESET button WS2812：cool RGB LED ME621：low dropout LDO, max current 800MA RP2040：dual-core processor, up to 133MHz operating frequency RP2040 pins：10x solder points, 9 of which are for GPIO Package Includes: 1PC x RP2040 Chip note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!