The STM32F051x microcontrollers incorporate the high-performance ARM Cortex-M0 32-bit RISC core operating at a 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, two SPIs, one I²S, one HDMI CEC and up to two USARTs), one 12-bit ADC, one 12-bit DAC, up to six general-purpose 16-bit timers, a 32-bit timer and an advanced-control PWM timer.The STM32F051x 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 STM32F051x microcontrollers include devices in six different packages ranging from 32 pins to 64 pins. Depending on the device chosen, different sets of peripherals are included. The description below provides an overview of the complete range of STM32F051x peripherals proposed.These features make the STM32F051x microcontrollers suitable for a wide range of applications such as application control and user interfaces, handheld 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.Core: ARM® 32-bit Cortex™-M0 CPU, frequency up to 48 MHzMemories16 to 64 Kbytes of Flash memory8 Kbytes of SRAM with HW parity checkingCRC calculation unitReset and power managementVoltage range: 2.0 V to 3.6 VPower-on/Power down reset (POR/PDR)Programmable voltage detector (PVD)Low power modes: Sleep, Stop, StandbyVBATsupply for RTC and backup registersClock management4 to 32 MHz crystal oscillator32 kHz oscillator for RTC with calibrationInternal 8 MHz RC with x6 PLL optionInternal 40 kHz RC oscillatorUp to 55 fast I/OsAll mappable on external interrupt vectorsUp to 36 I/Os with 5 V tolerant capability5-channel DMA controller1 x 12-bit, 1.0 µs ADC (up to 16 channels)Conversion range: 0 to 3.6 VSeparate analog supply from 2.4 up to 3.6One 12-bit D/A conve