Microchip, 8 bit AVR, ATMEGA32U4 Microcontroller, 16 MHz, 32kB FLASH, 44-Pin QFN

ATmega32U4 8-Bit megaAVR Microcontrollers

The Atmel ATmega32U4 Microcontroller is an 8-bit megaAVR device based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle the ATmega32U4 achieves throughputs approaching 1 MIPS per MHz, balancing power consumption and speed.
The ATmega32U4 features a USB 2.0 Device Module making it an ideal candidate for applications requiring USB connectivity. Also integrated is a JTAG interface for on-chip debug.

Microcontroller Features

• 16 MHz Max. Operating Frequency
• Up to 16 MIPS at 16 MHz
• 32 KB Flash
• 1024 B EEPROM
• 2.5 KB SRAM
• 135 Instructions – Most single clock cycle execution
• 32 General Purpose Registers
• 26 GPIO
• Power-on Reset and Programmable Brown-out Detection
• Internal 8 MHz Calibrated Oscillator
• Internal Clock Prescaler and On-the-fly Clock Switching
• External and Internal Interrupt Sources
• Six Power-Saving Sleep Modes
• Internal and External Interrupts
• Fully Static Operation
• On-Chip 2-cycle Multiplier

Communication Features

• USB 2.0 Full-speed/Low Speed Device Module
• JTAG (IEEE1149.1 compliant) Interface
• Programmable Serial USART with Hardware Flow Control
• Master/Slave SPI Serial Interface
• Byte Oriented 2-wire Serial Interface

Peripheral Features

• On-chip PLL for USB and High-Speed Timer
• 10-bit Analogue-to-Digital Converter (ADC) – 12 Channel
• One 10-bit High-Speed Timer/Counter with PLL (64 MHz) and Compare Mode
• One 8-bit Timer/Counter with Separate Prescaler and Compare Mode
• Two 16-bit Timers/Counters with Separate Prescaler, Compare and Capture Mode
• Four 8-bit PWM Channels
• Four PWM Channels with Programmable Resolution from 2 bits to 16 bits
• Six PWM Channels for High-Speed Operation, with Programmable Resolution from 2 bits to 11 bits
• Output Compare Modulator
• Programmable Watchdog Timer with Separate On-chip Oscillator
• On-chip Analogue Comparator
• Interrupt and Wake-up on Pin Change
• On-chip Temperature Sensor