The first microcontroller board of Raspberry Pi is Raspberry Pi Pico that specially designed for physical computing. Raspberry Pi Pico is built using RP2040 that features a dual-core Arm Cortex-M0+ processor with 264KB internal RAM and support for up to 16MB of off-chip Flash. It is a tiny, fast, and versatile board having a wide range of flexible I/O options including I2C, SPI, etc. It comes without header pins so, you have to purchase that separately. We can reprogram it easily over USB from a Raspberry Pi or other computer using the C/C++ SDK or the official MicroPython port.
Technical Specifications of PICO:
1.21 mm × 51 mm form factor
2.RP2040 microcontroller chip designed by Raspberry Pi in the UK
3.Dual-core Arm Cortex-M0+ processor, the flexible clock running up to 133 MHz
4.264KB on-chip SRAM
5.2MB onboard QSPI Flash
6.26 multifunction GPIO pins, including 3 analog inputs
7.2 × SPI controllers, 2 × UART, 16 × PWM channels, 2 × I2C controllers
8.1 × USB 1.1 controller and PHY, with host and device support
9.8 × Programmable I/O (PIO) state machines for custom peripheral support
10.Supported input power 1.8–5.5V DC
11.Operating temperature -20°C to +85°C
12.The castellated module allows soldering directly to carrier boards
13.Drag-and-drop programming using mass storage over USB
14.Low-power sleep and dormant modes
15.Accurate on-chip clock
16.Temperature sensor
17.Accelerated integer and floating-point libraries