| MCU Applications | USB Microcontroller |
| Architecture | AVR |
| MCU Core Size | 8bit |
| Program Memory Size | 64KB |
| RAM Memory Size | 4KB |
| CPU Speed | 20MHz |
| No. of I/O's | 48I/O's |
| MCU Case Style | TQFP |
| No. of Pins | 64Pins |
| Embedded Interface Type | I2C, SPI, TWI, UART, USART, USB |
| Supply Voltage Min | 2.7V |
| Supply Voltage Max | 5.5V |
| Packaging | Each |
| Product Range | - |
| Automotive Qualification Standard | - |
| MSL | - |
| SVHC | No SVHC (15-Jun-2015) |
| Controller Family/Series | AVR USB |
| Device Marking | AT90USB647-AU |
| EEPROM Memory Size | 2KB |
| Flash Memory Size | 64KB |
| Logic Function Number | 647 |
| MPU Core Size | 8bit |
| No. of ADC Inputs | 8 |
| No. of PWM Channels | 10 |
| No. of Timers | 4 |
| Operating Temperature Max | 85°C |
| Operating Temperature Min | -40°C |
| Operating Temperature Range | -40°C to +85°C |
| Oscillator Type | External, Internal |
| Peripherals | ADC, Comparator, PWM, RTC, Timer |
| Supply Voltage Range | 2.7V to 5.5V |
| Termination Type | Surface Mount Device |