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| PartNumber | ATMEGA8U2-AUR | ATMEGA8U2-AU | ATMEGA8U2 |
| Description | 8-bit Microcontrollers - MCU USB 8K FLASH 16 MHz | 8-bit Microcontrollers - MCU USB 8K FLASH 16 MHz | |
| Manufacturer | Microchip | Microchip | Atmel |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | Embedded - Microcontrollers |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | TQFP-32 | LQFP-32 | - |
| Series | ATmega8U2 | ATmega8U2 | AVRR ATmega |
| Core | AVR | AVR | AVR |
| Data Bus Width | 8 bit | 8 bit | 8 bit |
| Maximum Clock Frequency | 16 MHz | 16 MHz | 16 MHz |
| Program Memory Size | 8 kB | 8 kB | 8KB (4K x 16) |
| Data RAM Size | 512 B | 512 B | 512 B |
| ADC Resolution | No ADC | No ADC | No ADC |
| Number of I/Os | 22 I/O | 22 I/O | - |
| Operating Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Packaging | Reel | Tray | Tray Alternate Packaging |
| Product | MCU | MCU | MCU |
| Program Memory Type | Flash | Flash | FLASH |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | - |
| Data RAM Type | SRAM | SRAM | SRAM |
| Data ROM Size | 512 B | - | - |
| Data ROM Type | EEPROM | - | - |
| Interface Type | SPI, USART, USB | SPI, USART, USB | SPI USART USB |
| Moisture Sensitive | Yes | Yes | - |
| Number of Timers/Counters | 1 x 8 bit, 1 x 16 bit | 2 Timer | - |
| Processor Series | megaAVR | megaAVR | megaAVR |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | - |
| Factory Pack Quantity | 2000 | 250 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Supply Voltage Max | 5.5 V | 5.5 V | - |
| Supply Voltage Min | 2.7 V | 2.7 V | - |
| Tradename | AVR | AVR | ATMEGA |
| Watchdog Timers | Watchdog Timer | - | - |
| Height | - | 1.05 mm (Max) | - |
| Length | - | 7 mm | - |
| Width | - | 7 mm | - |
| Unit Weight | - | 0.027302 oz | 0.027302 oz |
| Package Case | - | - | LQFP-32 |
| Operating Temperature | - | - | -40°C ~ 85°C (TA) |
| Supplier Device Package | - | - | 32-TQFP (7x7) |
| Number of I O | - | - | 22 |
| Speed | - | - | 16MHz |
| EEPROM Size | - | - | 512 x 8 |
| Core Processor | - | - | AVR |
| RAM Size | - | - | 512 x 8 |
| Peripherals | - | - | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | - | - | SPI, UART/USART, USB |
| Voltage Supply Vcc Vdd | - | - | 2.7 V ~ 5.5 V |
| Core Size | - | - | 8-Bit |
| Data Converters | - | - | - |
| Oscillator Type | - | - | Internal |
| Supply Voltage Max | - | - | 5.5 V |
| Supply Voltage Min | - | - | 2.7 V |
| Number of I Os | - | - | 22 I/O |
| Number of Timers Counters | - | - | 2 Timer |