The Micro is a microcontroller board based on the ATmega32U4 (datasheet), developed in conjunction with Adafruit. It has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a micro USB cable to get started. It has a form factor that enables it to be easily placed on a breadboard. The Micro board is similar to the Arduino Leonardo in that the ATmega32U4 has built-in USB communication, eliminating the need for a secondary processor. This allows the Micro to appear to a connected computer as a mouse and keyboard, in addition to a virtual (CDC) serial / COM port.

Microchip ATmega32U4 high-performance low-power 8-bit AVR microcontroller with integrated USB 2.0 full-speed device controller, up to 16MHz operation, 32KB Flash memory, 2.5KB SRAM and 1KB EEPROM, 12-channel 10-bit ADC, timers, PWM, SPI, TWI/I2C, USART, JTAG debug interface, watchdog timer, brown-out detection and multiple sleep modes, operating voltage range 2.7V to 5.5V, available in TQFP-44 and QFN-44 packages. Search Keywords: ATmega32U4, Microchip ATmega32U4, Atmel ATmega32U4, AVR USB microcontroller, 8-bit AVR MCU, ATmega32U4 USB, ATmega32U4 TQFP44, ATmega32U4 QFN44, 32KB Flash AVR, Arduino Leonardo MCU, Pro Micro MCU, ATmega32U4 datasheet Hashtags: #ATmega32U4 #MicrochipATmega32U4 #AtmelATmega32U4 #AVRMicrocontroller #8bitMCU #USBMicrocontroller #USBFullSpeed #32KBFlash #ArduinoLeonardoMCU #ProMicroMCU #TQFP44 #QFN44MCU AVR 32K FLASH 16MHZ 44-TQFP Atmel ATMEGA32U4-AU, 8bit AVR Microcontroller, 16MHz, 1 kB, 32 kB Flash, 44-Pin TQFP USB-C Pro Micro ATmega32U4 / Elite-C compatible module