Specifications:

• Core: ARM 32-bit Cortex™-M3 CPU
• • 72 MHz, 90 DMIPS with 1.25 DMIPS/MHz
  • Single-cycle multiplication and hardware division
  • Nested interrupt controller with 43 maskable interrupt channels
  • Interrupt processing (down to 6 CPU cycles) with tail chaining
• Memories
  • 32-to-128 Kbytes of Flash memory
  • 6-to-20 Kbytes of SRAM
• Clock, reset and supply management
  • 2.0 to 3.6 V application supply and I/Os
  • POR, PDR, and programmable voltage detector (PVD)
  • 4-to-16 MHz quartz oscillator
  • Internal 8 MHz factory-trimmed RC
  • Internal 32 kHz RC
  • PLL for CPU clock
  • Dedicated 32 kHz oscillator for RTC with calibration
• Low power
  • Sleep, Stop and Standby modes
  • VBAT supply for RTC and backup registers
• 2 x 12-bit, 1 μs A/D converters (16-channel)
  • Conversion range: 0 to 3.6 V
  • Dual-sample and hold capability
  • Synchronize with advanced control timer
  • Temperature sensor
• DMA
  • 7-channel DMA controller
  • Peripherals supported: timers, ADC, SPIs, I2Cs and USARTs
• Debug mode
  • Serial wire debug (SWD) & JTAG interfaces
• Up to 80 fast I/O ports
  • 32/49/80 5 V-tolerant I/Os
  • All mappable on 16 external interrupt vectors
  • Atomic read/modify/write operations
• Up to 7 timers
  • Up to three 16-bit timers, each with up to 4 IC/OC/PWM or pulse counter
  • 16-bit, 6-channel advanced control timer:
    • up to 6 channels for PWM output
    • Dead time generation and emergency stop
  • 2 x 16-bit watchdog timers (Independent and Window)
  • SysTick timer: a 24-bit downcounter
• Up to 9 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)
  • CAN interface (2.0B Active)
  • USB 2.0 full speed interface

Datasheet: