MEAM.Design : Adafruit Itsy Bitsy 32u4

 

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General Information

The Adafruit ItsyBitsy32u4 is board based on the ATmega32u4 (similar to the Arduino Uno). There are two versions of this board one with 3.3V power and one with 5V power. We are assuming the 5V version on these pages.

How to Obtain an ItsyBitsy32u4
Board Pinout & Functionality
Getting Started with ItsyBitsy32u4


Programming Reference

System Clocks
I/O Ports (GPIO)
Timers/Counters
Analog-to-Digital Conversion
Interrupts
External & Pin-Change Interrupts
USB Communications
Serial Peripheral Interface (SPI)
Watchdog


Detailed References

ATmega32U4 Detailed Datasheet
AVR Libc Home Page
Adafruit ItsyBitsy 32u4 overview
MBR120 Schottky diode on USB of ItsyBitsy
ItsyBitsy32u4 Schematic
MIC5225 LDO Vreg on USB of ItsyBitsy


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