STMicroelectronics STM32F031F6P7

Overview

STM32F031F6P7 from STMicroelectronics is an ARM® Cortex®-M0 32-bit microcontroller with 32 KB Flash, 4 KB SRAM (HW parity), 48 MHz max CPU frequency, and integrated peripherals including 1×12-bit ADC (1.0 µs), 9 timers (including advanced-control TIM1 with deadtime), and communication interfaces (I²C Fast Mode Plus, USART with IrDA/LIN, SPI at 18 Mbit/s). It operates from 2.0–3.6 V and supports -40 to +105°C, targeting compact industrial control and sensor node applications.

For engineers reviewing the STM32F031F6P7 datasheet, STM32F031F6P7 pinout, STM32F031F6P7 application, or STM32F031F6P7 equivalent, key selection criteria include its TSSOP20 package footprint, 5 V-tolerant I/Os (up to 26 pins), SWD debug interface, RTC with alarm/wakeup, and programmable voltage detector (PVD) for robust power monitoring in resource-constrained embedded systems.

Technical Context

The device implements a single-core ARM Cortex-M0 processor with Harvard architecture, supporting Thumb-2 instruction set and NVIC with 32 interrupt lines. Its clock system integrates multiple sources: 4–32 MHz HSE crystal, 32 kHz LSE for RTC, 8 MHz HSI with PLL (×6), and 40 kHz LSI for watchdogs - enabling flexible low-power startup and precise timing.

Peripheral interconnect uses AHB/APB buses with DMA support for ADC, USART, SPI, and I²C. The advanced-control timer (TIM1) provides 6-channel complementary PWM with configurable deadtime and emergency stop, while the 12-bit ADC features hardware oversampling, temperature sensor, and VREFINT calibration - all optimized for deterministic real-time control loops.

Key Specifications

Pinout & Package

TSSOP20 package (6.5 × 4.4 mm, 0.65 mm pitch), RoHS-compliant and ECOPACK®2 certified, optimized for high-density PCB layouts with minimal thermal resistance (R_θJA = 125 °C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with STM32F030F4P6, the STM32F031F6P7 adds SRAM parity, TIM1, and RTC - critical for industrial reliability; versus STM32F042F4P6, it trades USB for lower cost and identical control capability, making it optimal for non-USB embedded control.

Availability

STM32F031F6P7 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, home appliance UIs, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STM32F031F6P7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and analog products for industrial, automotive, and consumer markets.

The STM32F0 series targets cost-sensitive, resource-constrained embedded applications requiring ARM Cortex-M0 performance, low power, and rich peripheral integration - especially where small footprint and extended temperature operation are essential.

FAQ

What is the maximum operating frequency of the STM32F031F6P7?

The STM32F031F6P7 achieves a maximum CPU frequency of 48 MHz using its internal 8 MHz HSI oscillator with ×6 PLL multiplication or an external 4–32 MHz crystal. This frequency is fully supported across the entire -40 to +105°C temperature range and 2.0–3.6 V supply voltage, with timing verified per ST's production characterization data (DocID025743 Rev 6, Section 6.3.9).

Does the STM32F031F6P7 support hardware CRC calculation?

Yes, the STM32F031F6P7 includes a dedicated CRC calculation unit compliant with IEEE 802.3 (32-bit polynomial 0x04C11DB7). It operates independently of the CPU, accepting data via memory-mapped registers or DMA, and is used for firmware image integrity verification and communication frame checksumming without software overhead.

How many I/O pins on the STM32F031F6P7 are 5 V tolerant?

Up to 26 I/O pins on the STM32F031F6P7 are 5 V tolerant when configured in input, output, or alternate function modes - specifically all pins except those assigned to analog functions (VREF+, VREF-, VBAT, VDDA, VSSA) and NRST. This is confirmed in the "I/O port characteristics" section (Table 46) of the datasheet, enabling direct interfacing with 5 V logic families.

Can the STM32F031F6P7 operate from a single 3.3 V supply without separate analog rail?

Yes - the STM32F031F6P7 allows VDDA to be connected directly to VDD (3.3 V), eliminating the need for a separate analog regulator. However, for optimal ADC accuracy (<±1 LSB INL), ST recommends using a filtered 3.3 V analog supply and separating VDDA/VSSA traces from noisy digital planes, as detailed in Section 6.3.4 and layout guidelines (AN4229).