ARM 32-bit Cortex™-M3 CPU Core72 MHz maximum frequency,1.25 DMIPS/MHz (Dhrystone 2.1) performance at 0 wait state memory accessSingle-cycle multiplication and hardware division
Memories64 or 128 Kbytes of Flash memory20 Kbytes of SRAM
Clock, reset and supply management2.0 to 3.6 V application supply and I/OsPOR, PDR, and programmable voltage detector (PVD)4-to-16 MHz crystal oscillatorInternal 8 MHz factory-trimmed RCInternal 40 kHz RCPLL for CPU clock32 kHz oscillator for RTC with calibration
Low powerSleep, Stop and Standby modesVBAT supply for RTC and backup registers
2 x 12-bit, 1 μs A/D converters (up to 16 channels)Conversion range: 0 to 3.6 VDual-sample and hold capabilityTemperature sensor
DMA7-channel DMA controllerPeripherals supported: timers, ADC, SPIs, I2Cs and USARTs
Up to 80 fast I/O ports26/37/51/80 I/Os, all mappable on 16 external interrupt vectors and almost all 5 V-tolerant
7 timersThree 16-bit timers, each with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input16-bit, motor control PWM timer with dead-time generation and emergency stop2 watchdog timers (Independent and Window)SysTick timer 24-bit downcounter
Up to 9 communication interfacesUp to 2 x I2C interfaces (SMBus/PMBus)Up to 3 USARTs (ISO 7816 interface, LIN, IrDA capability, modem control)Up to 2 SPIs (18 Mbit/s)CAN interface (2.0B Active)USB 2.0 full-speed interface
