MICROCHIP TECHNOLOGY IC: AVR microcontroller; ATMEGA; TQFP44; 2.7÷5.5VDC; Ext.inter: 13 [ATMEGA32U4-AU]

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