| Installation type | Surface mount |
| packing | pallet |
| series | AT91 |
| Part status | stop production |
| Memory type | ROM |
| storage capacity | 256KB(256K x 8) |
| speed | 66MHz |
| Voltage - Supply | 1.65V ~ 1.95V |
| working temperature | -40°C ~ 85°C(TA) |
| Encapsulation/Housing | 100-LQFP |
| Country of origin | USA |
| Warehouse | China/Hong Kong |
| quality | Original genuine |
| Number of cores | 16/32-bit |
| Core processor | ARM7TDMI |
| Connectivity | I²C,MMC,SPI,SSC,UART/USART,USB |
| peripheral | WDT |
| Number of I/Os | 63 |
| RAM size | 96K x 8 |
| Oscillator type | Inside |