| Series | AT91 |
| Package | Tray |
| Part Status | Active |
| Core Processor | ARM7® |
| Core Size | 16/32-Bit |
| Speed | 33MHz |
| Connectivity | EBI/EMI, SPI, UART/USART |
| Peripherals | WDT |
| Number of I/O | 54 |
| Program Memory Size | - |
| Program Memory Type | ROMless |
| EEPROM Size | - |
| RAM Size | 8K x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 3.6V |
| Data Converters | - |
| Oscillator Type | External |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 144-LQFP |
| Supplier Device Package | 144-LQFP (20x20) |
