ATMEGA8U2-AU Datasheet PDF - Microchip

The ATMEGA8U2-AU is a 8-bit high-performance low-power AVR RISC-based Microcontroller combines 8kB ISP flash memory with read-while-write capabilities, 512B EEPROM, 512B SRAM, 22 general purpose I/O lines, 32 general purpose working registers, two flexible timer/counters with compare modes and PWM, USART, programmable watchdog timer with internal oscillator, SPI serial port, debugWIRE interface for on-chip debugging and programming and five software selectable power saving modes. The device operates between 2.7 to 5.5V. By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching 1 MIPS per MHz, balancing power consumption and processing speed.

● Advanced RISC architecture - Fully static operation

● Non-volatile program and data memories

● USB 2.0 full-speed device module with interrupt on transfer completion

● Peripheral features - Programmable watchdog timer with separate on-chip oscillator

● On chip debug interface (debugWIRE)

● Power-on reset (POR) and programmable brown-out detection

● Internal calibrated oscillator

● External and internal interrupt sources

● Five sleep modes - Idle, power-save, power-down, standby and extended standby

● 22 Programmable I/O lines

● -40 to +85°C Industrial operating temperature range