| Installation type | Surface mount | 
| packing | pallet | 
| series | AT91 | 
| Part status | stop production | 
| Memory type | ROMless | 
| speed | 33MHz | 
| Voltage - Supply | 2.7V ~ 3.6V | 
| working temperature | -40°C ~ 85°C(TA) | 
| Encapsulation/Housing | 176-LQFP | 
| Country of origin | USA | 
| Warehouse | China/Hong Kong | 
| quality | Original genuine | 
| Number of cores | 16/32-bit | 
| Core processor | ARM7® | 
| Connectivity | EBI/EMI,SPI,UART/USART | 
| peripheral | POR,WDT | 
| Number of I/Os | 58 | 
| RAM size | 8K x 8 | 
| Data converter | A/D 8x10b;D/A 2x10b | 
| Oscillator type | Inside |