STMicroelectronics STM32F031F6P6

Overview

STM32F031F6P6 from STMicroelectronics is a 32-bit ARM® Cortex®-M0 microcontroller with 32 KB Flash, 4 KB SRAM (with hardware parity), 48 MHz max CPU frequency, 12-bit 1.0 µs ADC (10-channel), and integrated RTC with alarm and wakeup from Stop/Standby-used in industrial sensor nodes, smart metering front-ends, and low-power motor control interfaces.

For engineers reviewing the STM32F031F6P6 datasheet, STM32F031F6P6 pinout, STM32F031F6P6 application, or STM32F031F6P6 equivalent, key selection criteria include Flash/SRAM size, 5 V-tolerant I/O count (up to 26), 9 timer resources including advanced-control TIM1 with deadtime generation, and support for I²C Fast Mode Plus (1 Mbit/s) and IrDA-capable USART.

Technical Context

The device implements a single-cycle ARM Cortex-M0 core with Thumb-2 instruction set, coupled with tightly coupled NVIC and EXTI for deterministic interrupt response down to 6 cycles. Memory subsystem includes unified Flash with prefetch buffer and SRAM with hardware parity checking for safety-critical operation.

Clock architecture integrates multiple sources: 4–32 MHz HSE crystal oscillator, 32 kHz LSE for RTC calibration, 8 MHz HSI RC with x6 PLL for system clock, and 40 kHz LSI for watchdog and Stop mode recovery-enabling flexible power/performance tradeoffs across Sleep, Stop, and Standby modes.

Key Specifications

Pinout & Package

TSSOP20 package (6.5 × 4.4 mm, 0.65 mm pitch), RoHS-compliant ECOPACK®2, rated for −40°C to +105°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F030F4P6, the STM32F031F6P6 provides hardware parity, RTC calendar, and 5 V-tolerant I/O-critical for industrial reliability; versus STM32F042F4P6, it trades USB for lower cost and smaller die area while retaining identical timing and control capabilities.

Availability

STM32F031F6P6 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter front-ends, and brushless DC motor control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STM32F031F6P6 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 devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STM32F0 series targets cost-sensitive, resource-constrained embedded applications requiring high integration, low power, and industrial-grade reliability-optimized for control-centric use cases like motor drives, sensor hubs, and smart actuators.

FAQ

What is the maximum operating frequency and corresponding supply voltage range?

The STM32F031F6P6 achieves 48 MHz maximum CPU frequency across its full 2.0–3.6 V VDD operating range. At 2.0 V, the maximum guaranteed frequency is 24 MHz; full 48 MHz operation requires ≥2.4 V supply, per Section 6.3.1 of the datasheet. Internal voltage regulator enables stable core operation independent of analog supply fluctuations.

Does this MCU support hardware-based cryptographic acceleration?

No, the STM32F031F6P6 does not include dedicated cryptographic accelerators (e.g., AES, SHA, PKA). It relies on software libraries for encryption tasks. For hardware crypto, ST recommends the STM32L4 or STM32G0 series. This part focuses on deterministic real-time control and analog integration-not security processing.

Can the internal 8 MHz RC oscillator be used as the system clock without an external crystal?

Yes-the internal 8 MHz HSI RC oscillator can serve as the system clock source directly or feed the x6 PLL to generate 48 MHz. Factory-trimmed to ±1% accuracy at 25°C, it supports full operation without external components, though external crystals (4–32 MHz) are required for RTC calibration or higher precision timing.

What debug interfaces are supported and what pins do they require?

The STM32F031F6P6 supports Serial Wire Debug (SWD) only-requiring two pins: PA13 (SWDIO) and PA14 (SWCLK). JTAG is not implemented. SWD enables full debug access (breakpoints, memory inspection, register view) and programming via standard ST-LINK/V2 or compatible debug probes.