Description
The STM32F050xx family incorporates the high-performance ARM Cortex™-M0 32-bit RISC core operating at a 48 MHz maximum frequency, high-speed embedded memories (Flash memory up to 32 Kbytes and SRAM up to 4 Kbytes), and an extensive range of enhanced peripherals and I/Os. All devices offer standard communication interfaces (one I2C, one SPI, one I2S, and one USART), one 12-bit ADC, up to five general-purpose 16-bit timers, a 32-bit timer and an advanced-control PWM timer.

Features
■ Core: ARM 32-bit Cortex™-M0 CPU,
   frequency up to 48 MHz
■ Memories
   – 16 to 32 Kbytes of Flash memory
   – 4 Kbytes of SRAM with HW parity checking
■ CRC calculation unit
■ Reset and supply management
   – Voltage range: 2.0 V to 3.6 V
   – Power-on/Power-down reset (POR/PDR)
   – Programmable voltage detector (PVD)
   – Low power modes: Sleep, Stop and
      Standby
   – VBAT supply for RTC and backup registers
■ Clock management
   – 4 to 32 MHz crystal oscillator
   – 32 kHz oscillator for RTC with calibration
   – Internal 8 MHz RC with x6 PLL option
   – Internal 40 kHz RC oscillator
■ Up to 39 fast I/Os
   – All mappable on external interrupt vectors
   – Up to 25 I/Os with 5 V tolerant capability
■ 5-channel DMA controller
■ 1 × 12-bit, 1.0 µs ADC (up to 10 channels)
   – Conversion range: 0 to 3.6V
   – Separate analog supply from 2.4 up to
      3.6 V
■ Up to 9 timers
   – 1 x 16-bit 7-channel advanced-control timer
      for 6 channels PWM output, with deadtime
      generation and emergency stop
   – 1 x 32-bit and 1 x 16-bit timer, with up to 4
      IC/OC, usable for IR control decoding
   – 1 x 16-bit timer, with 2 IC/OC, 1 OCN,
      deadtime generation and emergency stop
   – 1 x 16-bit timer, with IC/OC and OCN,
      deadtime generation, emergency stop and
      modulator gate for IR control
   – 1 x 16-bit timer with 1 IC/OC
   – Independent and system watchdog timers
   – SysTick timer: 24-bit downcounter
■ Calendar RTC with alarm and periodic wakeup
   from Stop/Standby
■ Communication interfaces
   – 1 x I2C interface; supporting Fast Mode
      Plus (1 Mbit/s) with 20 mA current sink,
      SMBus/PMBus, and wakeup from STOP
   – 1 x USART supporting master synchronous
      SPI and modem control; one with ISO7816
      interface, LIN, IrDA capability auto baud
      rate detection and wakeup feature
   – 1 x SPI (18 Mbit/s) with 4 to 16
      programmable bit frames, with I2S interface
      multiplexed
■ Serial wire debug (SWD)
■ 96-bit unique ID
■ Extended temperature range: -40 to +105°C