| Installation type | Surface mount | 
| packing | pallet | 
| series | AVR®32 UC3 A3 | 
| Part status | On sale | 
| Memory type | Flash Memory | 
| storage capacity | 256KB(256K x 8) | 
| speed | 66MHz | 
| Voltage - Supply | 1.75V ~ 3.6V | 
| working temperature | -40°C ~ 85°C(TA) | 
| Encapsulation/Housing | 144-LQFP | 
| Country of origin | USA | 
| Warehouse | China/Hong Kong | 
| quality | Original genuine | 
| Number of cores | 32-bit | 
| Core processor | AVR | 
| Connectivity | EBI/EMI,I²C,IrDA,SD,SPI,SSC,UART/USART,USB OTG | 
| peripheral | Undervoltage detection,reset,DMA,POR,WDT | 
| Number of I/Os | 110 | 
| RAM size | 128K x 8 | 
| Data converter | A/D 8x10b | 
| Oscillator type | Inside |