● ARM Cortex-M3 core ‒ Operating frequency: 1 to 80 MHz ‒ Memory Protection Unit (MPU)
● Low-power consumption mode ‒ Operating voltage: 2.7 to 5.5V ‒ Low-power consumption operation: IDLE, STOP1,STOP2
● Operating temperature: -40 to +85°C
● Internal memory ‒ Code flash: 256KB to 512 KB, rewritable .