Device Core = ARM7TDMI / Data Bus Width bit = 32 / Instruction Set Architecture = RISC / Family Name = AT91 / Clock Frequency Max. MHz = 55 / Program Memory Type = Flash / Program Memory Size kB = 256 / RAM Memory Size kB = 64 / Interfaces = I²C / Interfaces = USB / Interfaces = UART / Interfaces = SPI / ADC Channels = 8 / ADC Resolution bit = 10 / Number of Programmable I/Os = 32 / Number of Timers/Counters = 3 / Comparators = 1 / Supply Voltage Min. V = 1.65 / Supply Voltage Max. V = 3.6 / Operating Temperature Min. °C = -40 / Operating Temperature Max. °C = 85 / Package Type = LQFP / Pins = 64 / Mounting Type = SMD / MSL = Level-3 / Packaging = Tray / Length mm = 7 / Width mm = 7 / Height mm = 1.6 / Reflow Temperature Max. °C = 260