Features：

 Core: ARM 32-bit Cortex™-M3 CPU– 36 MHz maximum frequency,1.25 DMIPS/MHz (Dhrystone 2.1)performance at 0 wait state memoryaccess– Single-cycle multiplication and hardwaredivision

 Memories– 64 to 128 Kbytes of Flash memory– 10 to 16 Kbytes of SRAM

 Clock, reset and supply management– 2.0 to 3.6 V application supply and I/Os– POR, PDR and programmable voltagedetector (PVD)– 4-to-16 MHz crystal oscillator– Internal 8 MHz factory-trimmed RC– Internal 40 kHz RC– PLL for CPU clock– 32 kHz oscillator for RTC with calibration

 Low power– Sleep, Stop and Standby modes– VBAT supply for RTC and backup registers

 Debug mode– Serial wire debug (SWD) and JTAGinterfaces

 DMA– 7-channel DMA controller– Peripherals supported: timers, ADC, SPIs,I2Cs and USARTs

 1 × 12-bit, 1 µs A/D converter (up to 16channels)– Conversion range: 0 to 3.6 V– Temperature sensor

 Up to 80 fast I/O ports

– 26/37/51/80 I/Os, all mappable on 16external interrupt vectors and almost all5 V-tolerant

 Six timers– Three 16-bit timers, each with up to 4IC/OC/PWM or pulse counter– 2 watchdog timers (Independent andWindow)– SysTick timer: 24-bit downcounter

 Up to 7 communication interfaces– Up 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)

 CRC calculation unit, 96-bit unique ID ECOPACK® packages