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.
All 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 VDDto 3.6 V
Power-on/Power down reset (POR/PDR)
Programmable voltage detector (PVD)
Low power modes: Sleep, Stop, Standby
VBATsupply 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 I2C 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 I2S interface multiplexed
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