Microchip ATMEGA32U2-AU, 8bit AVR Microcontroller, ATmega32U2, 16MHz, 32 kB Flash, 32-Pin TQFP

The Microchip ATmega32U2 CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. It operates on 2.7V to 5.5V voltage range. The AVR core combines a rich instruction set with 32 general purpose working registers. It features 32Kbytes of In-System Programmable Flash with Read-While-Write capabilities, 1024 bytes EEPROM, 1024 bytes SRAM 22 general purpose I/O lines, 32 general purpose working registers, two flexible Timer/Counters with compare modes and PWM, one USART, a programmable Watchdog Timer with Internal Oscillator, an SPI serial port, debugWIRE interface, also used for accessing the On-chip Debug system and programming and five software selectable power saving modes. The Idle mode stops the CPU while allowing the SRAM, Timer/Counters, SPI port, and interrupt system to continue functioning. The Power-down mode saves the register contents but freezes the Oscillator, disabling all other chip functions until the next interrupt or hardware reset.

Up to 16 MIPS Throughput at 16 MHz
In-System Programming by on-chip Boot Program hardware-activated after reset
Programming lock for software security
USB 2.0 Full-speed device module with interrupt on transfer completion
Microcontroller reset on USB Bus Reset without detach
USB Bus Disconnection on Microcontroller Request
One 8-bit Timer/Counters with Separate Prescaler and Compare Mode (two 8-bit PWM channels)
One 16-bit Timer/Counter with Separate Prescaler, Compare and Capture Mode (three 8-bit PWM channels)
Master/Slave SPI Serial Interface
Programmable watchdog timer with separate on-chip oscillator
On-chip analog comparator
Interrupt and wake-up on pin change
Power-On Reset and programmable brown-out detection
Internal calibrated oscillator
External and internal Interrupt sources
QFN32 (5x5mm) / TQFP32 package

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