Adafruit ItsyBitsy Atmega32U4 5V 16MHz Microcontroller Board Products

Description

The Adafruit ItsyBitsy 32U4 5V 16MHz microcontroller board has the ATmega32U4 MCUMicrocontroller Unit broken out in a small form factor (1.4in x 0.7in) to fit inside an enclosure. The ATmega32U4 chip has a built-in USB controller where the board has a Micro-B USB connector for both power and programming.

Processor

The ItsyBitsy has an 8-bit 16MHz AVRAVR microcontrollers derives its name from its developers and stands for, Alf-Egil Bogen and Vegard Wollan RISC microcontroller, and is also known as Advanced Virtual RISC. ATmega328P processor with Advanced RISCReduced Instruction Set Computer architecture. The default clock speed is 16MHz, but it can go up to a maximum speed of 20MHz.

Memory

• 28KB Flash
• 1KB EEPROMElectrically Erasable Programmable Read-Only Memory
• 2KB SRAMStatic Random Access Memory

I/OInput/Output

• 1x USB Micro-B connector (USB 2.0 Full/Low speed)
• 10x Digital I/OInput/Output with 4x PWMPulse-Width Modulation (5V Logic)
• 6x analog pins 10-bit ADCAnalog-to-Digital Converter (ADC, A/D, or A-to-D) (0V to 5V range)
• Communication Interfaces (5V Logic): 1x UARTUniversal Asynchronous Receiver-Transmitter, 1x I2CInter-Integrated Circuit. Also referred to as IIC or I²C., and 1x SPISerial Peripheral Interface

User Interface

• 1x Reset Button
• 1x User Red LED connected to Pin #13

Power

The board can be powered with either USB or external source (such as a battery) into BAT pin - it will automatically switch over. The board has a 5.0V power regulator with 150mA output capability, ultra-low dropout, up to 16V input, reverse-polarity protection, with thermal and current-limit protection. There are 3 power pins on the board: BAT, USB, and GND.

• BAT is the battery input (5.5V-16V DC) for an alternative power source to USB.
• USB is the same pin as the Micro-B USB connector's 5V USB power pin. This should be used as an output to get 5V power from the USB port.
• GND is the common/ground/0V reference.

Board Size

35.0mm x 18.0mm (1.4in x 0.7in)

Documentation

• Adafruit ItsyBitsy 32U4 Guide
• Adafruit ItsyBitsy 32U4 5V 16MHz Pinout
• Adafruit ItsyBitsy 32U4 5V 16MHz Schematic
• Adafruit ItsyBitsy 32U4 5V 16MHz Fab Print
• ATmega32U4 Datasheet (PDF)

Products

---

Adafruit 3677 ItsyBitsy ATmega32u4 - 5V 16MHz Microcontroller Board

Package includes:

• 1x ItsyBitsy board
• 3x 16-Pin Straight Male Header

Price: $9.95(Updated 10Aug2024 08:44:512024-08-10T08:44:51Z UTC UTC)

Adafruit.com

---

Adafruit 3677 ItsyBitsy ATmega32u4 - 5V 16MHz Microcontroller Board

Package includes:

• 1x ItsyBitsy board
• 3x 16-Pin Straight Header

Price: $14.55(Updated 07Aug2024 23:06:472024-08-07T23:06:47Z UTC UTC)

Amazon.com (Affiliate Link ⓘAs an Amazon associate I earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)

---