The STM32F031x4/x6 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 32 Kbytes of Flash memory and 4 Kbytes of SRAM), and an extensive range of enhanced peripherals and I/Os. All devices offer standard communication interfaces (one I2C, one SPI/ I2S and one USART), one 12-bit ADC, five 16-bit timers, one 32-bit timer and an advanced-control PWM timer. The STM32F031x4/x6 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 STM32F031x4/x6 microcontrollers include devices in six different packages ranging from 20 pins to 48 pins with a die form also available upon request. Depending on the device chosen, different sets of peripherals are included. These features make the STM32F031x4/x6 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 32 Kbytes of Flash memory
4 Kbytes of SRAM with HW parity
CRC calculation unit
Reset and power management
Digital and I/Os supply: 2.0 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 and 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 39 fast I/Os
All mappable on external interrupt vectors
Up to 26 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 mode
1 x USART supporting master synchronous SPI and modem control, 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
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