A new chip means a new ItsyBitsy, and the Raspberry Pi RP2040 is no exception. When Adafruit saw this chip they thought “this chip is going to be awesome when we give it the ItsyBitsy teensy-weensy Treatment” and so they did! This Itsy’ features the RP2040, and all niceties you know and love about the ItsyBitsy family
Small, powerful, with a ultra fast dual Cortex M0+ processor running at 125 MHz – this microcontroller board is perfect when you want something very compact, with lots of horsepower and a bunch of pins. This Itsy has sports car speed, but SUV roominess with 8 MB of FLASH and 264KB of SRAM.
ItsyBitsy RP2040 is only 1.4″ long by 0.7″ wide, but has 6 power pins, 23 digital GPIO pins (4 of which can be analog in and 16 x PWM out). It’s the same chip as the Feather RP2040 and Raspberry Pi Pico but really really small. So it’s great once you’ve finished up a prototype, and want to make the project much smaller. It even comes with 8 MB of SPI Flash built in, for data logging, file storage, or CircuitPython/MicroPython code
Inside the RP2040 is a ‘permanent ROM’ USB UF2 bootloader. What that means is when you want to program new firmware, you can hold down the BOOTSEL button while plugging it into USB (or pulling down the RUN/Reset pin to ground) and it will appear as a USB disk drive you can drag the firmware onto. Folks who have been using Adafruit products will find this very familiar – they use the technique on all of their native-USB boards. Just note you don’t double-click reset, instead hold down BOOTSEL during boot to enter the bootloader!
This Itsy comes with loose 0.1″ headers you can solder in for breadboard use!
- Dual ARM Cortex-M0+ @ 133MHz
- 264kB on-chip SRAM in six independent banks
- Support for up to 16MB of off-chip Flash memory via dedicated QSPI bus
- DMA controller
- Fully-connected AHB crossbar
- Interpolator and integer divider peripherals
- On-chip programmable LDO to generate core voltage
- 2 on-chip PLLs to generate USB and core clocks
- 30 GPIO pins, 4 of which can be used as analog inputs
- 2 UARTs
- 2 SPI controllers
- 2 I2C controllers
- 16 PWM channels
- USB 1.1 controller and PHY, with host and device support
- 8 PIO state machines
1 x Adafruit ItsyBitsy RP2040