Custom digital protocols and precise timing
Programmable I/O state machines bit-bang protocols (WS2812, DVI, extra UARTs) without CPU load.
Engineering inference
Raspberry Pi Ltd
Low-cost RP2040 microcontroller board: dual Cortex-M0+ up to 133 MHz, 264 kB SRAM, 2 MB QSPI flash, 26 × 3.3 V GPIO (3 ADC), micro-USB, 51×21 mm DIP/castellated module.
SC0915Revision Rev3Development boardFacts about the complete product. Unknown values remain open design questions.
Guidance to help you shortlist. The basis is shown for each recommendation.
Programmable I/O state machines bit-bang protocols (WS2812, DVI, extra UARTs) without CPU load.
Engineering inferenceUSB is on the main chip (RP2040), so the board can enumerate as a keyboard, MIDI device or CDC serial port.
Engineering inferencePrograms from MicroPython.
Engineering inferenceThe board is the parent product. Each chip has its own memory, pins, capabilities and thermal limits.
Raspberry Pi Ltd
c8fed96b-dedc-5059-891f-d9a87dbefb80--mcuWinbond
c8fed96b-dedc-5059-891f-d9a87dbefb80--flashAbracon
c8fed96b-dedc-5059-891f-d9a87dbefb80--xtalRichtek
c8fed96b-dedc-5059-891f-d9a87dbefb80--smpsThe Raspberry Pi Pico is built around the RP2040, alongside W25Q16JV, ABM8-272-T3, RT6150.
26 GPIO pins are exposed. Xirkit documents 49 board pins, 32 of them with pin-level electrical limits.
No. The I/O pins are not 5 V tolerant — they run at 3.3 V logic; use a level shifter for 5 V signals. Input-high threshold: 2–3.6 V.
Documented output-high current per pin: ≤ 12 mA. Values are traced to the chip datasheet; see the pinout table for per-pin limits and conditions.
Supply range 1.8–5.5 V. Power inputs: VSYS (1.8–5.5 V), VBUS.
From $4 at Raspberry Pi Ltd (RRP, datasheet) (2 supplier offers tracked). Prices are observed unit prices before tax and shipping.
51 × 21 × 1 mm. A STEP model is available for enclosure fit checks.
gpio, uart, i2c, spi, pwm, pio, usb, clock, other, adc.
Supported frameworks: C/C++ SDK, MicroPython.
Every value in this record is traced to a source — 3 documents including the board and chip datasheets — with the page and table cited per value. Unknowns are left explicit, never guessed.