Raspberry PI pico
The basis of the board is a dual—core Arm Cortex M0+ chip, with a core frequency of 133 MHz. The board has 264 KB of RAM and 2 MB of flash memory. In addition, there is a USB 1.1 connector and I/O channels, of which 26 are available to the user. It is possible to use interfaces 2 = UART, 2 = I2C, 2 = SPI (up to 16 MB of SPI Flash with XP), as well as 16 PWM channels. There is also a temperature sensor and 4 ADC channels.
The developers said that work on their own chip has been carried out since 2016. According to the team, they needed a chip with capabilities that none of the chips from other manufacturers had. In 2018, a prototype was ready, which was then finalized, receiving a system that became the basis of the Pico single-board.
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