Description

Adafruit Feather M0 Express is the first Feather specifically?designed for use with CircuitPython! CircuitPython is a beginner-oriented flavor of MicroPython ?? and as the name hints at, it??s a small but full-featured version of the popular Python programming language specifically for use with circuitry and electronics.
At the Feather M0??s heart is an ATSAMD21G18 ARM Cortex M0+ processor, clocked at 48 MHz and at 3.3V logic, the same one used in the new?Arduino Zero. This chip has a whopping 256K of FLASH (8x more than the Atmega328 or 32u4) and 32K of RAM (16x as much)! This chip comes with a built-in USB so it has a USB-to-Serial program & debug capability built-in with no need for an FTDI-like chip.
The?Feather M0 Express?uses the extra space left over to add a?Mini NeoPixel,?2 MB SPI Flash?storage, and a little prototyping space. You can use the SPI Flash storage like a very tiny hard drive. When used in CircuitPython, the 2 MB flash acts as storage for all your scripts, libraries, and files. When used in Arduino, you can read/write files to it, like a little datalogger or SD card, and then with our helper program, access the files over USB.

Features:

Light as a feather ?? 5 grams
ATSAMD21G18 @ 48MHz with 3.3V logic/power
256KB of FLASH + 32KB of RAM
No EEPROM
32.768 kHz crystal for clock generation & RTC
3.3V regulator with 500mA peak current output
USB native support comes with a USB bootloader and serial port debugging
You also get tons of pins ?? 20 GPIO pins
Hardware Serial, hardware I2C, hardware SPI support
PWM outputs on all pins
6 x 12-bit analog inputs
1 x 10-bit analog ouput (DAC)
Built-in 100mA LiPo charger with charging status indicator LED
Pin #13 red LED for general purpose blinking
Power/enable pin
4 mounting holes
Reset button

Package Includes:
1 x Adafruit Feather M0 Express ?? Designed for CircuitPython -ATSAMD21 Cortex-M0