MCU, ATMega AVR RISC, 32 KB, 16 MHz, TQFP-32

ATmega32U2
The ATmega32U2 is an AVR low-power CMOS 8-bit microcontroller based on enhanced RISC architecture. By executing instructions in a single clock cycle, the ATmega32U2 achieves throughputs of almost 1 MIPS per MHz. This allows system designers to optimise power consumption in comparison to processing speed.

Features
- High-performance, low-power AVR 8-bit microcontroller
- Advanced RISC architecture
- 125 instructions - usually in a single clock cycle
- 32 x 8 general purpose registers
- Up to 16 MIPS throughput at 16 MHz
- Non-volatile program and data memory
- 32 K in-system Flash
- 1024-byte EEPROM
- 1024-byte internal SRAM
- Write/erase cycles: 10,000 Flash/100,000 EEPROM
- Data retention: 20 years at 85°C/100 years at 25°C (1)
- Optional boot code section with independent lock bits
- USB 2.0 full-speed-device with interrupt
- Complies with USB specification rev. 2.0
- 48-MHz PLL for full-speed bus mode: Data transfer rates of 12 Mbit/s
- Completely independent 176-byte USB DPRAM for endpoint memory allocation
- Endpoint 0 for control transfers: from 8 to 64 bytes
- 4 programmable endpoints
- USB bus trip on microcontroller request
- Peripheral functions
- One 8-bit timer/counter with separate prescaler and comparison mode (two 8-bit PWM channels)
- One 16-bit timer/counter with separate prescaler, comparison and capture mode (three 8-bit PWM channels)
- USART with SPI master mode and hardware flow control (RTS/CTS)
- Master/slave SPI serial interface
- Programmable watchdog timer with separate on-chip oscillator
- On-chip analogue comparator
- Alarm and wake-on-connection
- On-chip debug interface (debugWIRE)
- Special microcontroller characteristics
- Power-on-reset and programmable brown-out recognition
- Internal calibrated oscillator
- External and internal interrupt sources
- Five sleep modes: standby, power save, power-down, standby and extended standby
- 22 programmable I/O lines
- Operating voltages: 2.7 - 5.5 V
- Operating temperature: industrial: -40°C to +85°C
- Maximum frequency
- 8 MHz at 2.7 V
- 16 MHz at 4.5 V