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STM32F051R4：Mainstream ARM Cortex-M0 Access line MCU with 16 Kbytes Flash, 48 MHz CPU, motor control and CEC functions

The STM32F051xx microcontrollers incorporate the high-performance ARM^®Cortex^®-M0 32-bit RISC core operating at up to 48 MHz frequency, high-speed embedded memories (up to 64 Kbytes of Flash memory and 8 Kbytes of SRAM), and an extensive range of enhanced peripherals and I/Os. All devices offer standard communication interfaces (up to two I²Cs, up to two SPIs, one I²S, one HDMI CEC and up to two USARTs), one 12-bit ADC, one 12-bit DAC, six 16-bit timers, one 32-bit timer and an advanced-control PWM timer.

The STM32F051xx microcontrollers operate in the -40 to +85 °C and -40 to +105 °C temperature ranges, from a 2.0 to 3.6 V power supply. A comprehensive set of power-saving modes allows the design of low-power applications.

The STM32F051xx microcontrollers include devices in seven different packages ranging from 32 pins to 64 pins with a die form also available upon request. Depending on the device chosen, different sets of peripherals are included.

These features make the STM32F051xx microcontrollers suitable for a wide range of applications such as application control and user interfaces, hand-held equipment, A/V receivers and digital TV, PC peripherals, gaming and GPS platforms, industrial applications, PLCs, inverters, printers, scanners, alarm systems, video intercoms and HVACs.

Key Features

• Core: ARM® 32-bit Cortex® -M0 CPU, frequency up to 48 MHz
• Memories
  • 16 to 64 Kbytes of Flash memory
  • 8 Kbytes of SRAM with HW parity checking
• CRC calculation unit
• Reset and power management
  • Digital and I/O supply: VDD = 2.0 V to 3.6 V
  • Analog supply: VDDA = from VDD to 3.6 V
  • Power-on/Power down reset (POR/PDR)
  • Programmable voltage detector (PVD)
  • Low power modes: Sleep, Stop, 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 55 fast I/Os
  • All mappable on external interrupt vectors
  • Up to 36 I/Os with 5 V tolerant capability
• 5-channel DMA controller
• One 12-bit, 1.0 μs ADC (up to 16 channels)
  • Conversion range: 0 to 3.6 V
  • Separate analog supply from 2.4 up to 3.6
• One 12-bit DAC channel
• Two fast low-power analog comparators with programmable input and output
• Up to 18 capacitive sensing channels supporting touchkey, linear and rotary touch sensors
• Up to 11 timers
  • One 16-bit 7-channel advanced-control timer for 6 channels PWM output, with deadtime generation and emergency stop
  • One 32-bit and one 16-bit timer, with up to 4 IC/OC, usable for IR control decoding
  • One 16-bit timer, with 2 IC/OC, 1 OCN, deadtime generation and emergency stop
  • Two 16-bit timers, each with IC/OC and OCN, deadtime generation, emergency stop and modulator gate for IR control
  • One 16-bit timer with 1 IC/OC
  • Independent and system watchdog timers
  • SysTick timer: 24-bit downcounter
  • One 16-bit basic timer to drive the DAC
• Calendar RTC with alarm and periodic wakeup from Stop/Standby
• Communication interfaces
  • Up to two I2 C interfaces, one supporting Fast Mode Plus (1 Mbit/s) with 20 mA current sink, SMBus/PMBus and wakeup from Stop mode
  • Up to two USARTs supporting master synchronous SPI and modem control, one with ISO7816 interface, LIN, IrDA capability, auto baud rate detection and wakeup feature
  • Up to two SPIs (18 Mbit/s) with 4 to 16 programmable bit frame, one with I2 S interface multiplexed
• HDMI CEC interface, wakeup on header reception
• Serial wire debug (SWD)
• 96-bit unique ID
• All packages ECOPACK® 2

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