STMicroelectronics STM32F031F6P6TR

Overview

STM32F031F6P6TR from STMicroelectronics is a 32-bit ARM Cortex-M0 microcontroller in TSSOP20 package, operating up to 48 MHz with 32 KB Flash, 4 KB SRAM (HW parity), and integrated peripherals including 12-bit ADC (1.0 µs), 9 timers (including advanced-control TIM1 with deadtime and emergency stop), RTC, I²C (Fast Mode Plus), USART (LIN/IrDA/ISO7816), and SPI (18 Mbit/s). It targets cost-sensitive industrial control and sensor interface applications requiring extended temperature operation (−40 to +105°C).

For engineers reviewing the STM32F031F6P6TR datasheet, STM32F031F6P6TR pinout, STM32F031F6P6TR application, or STM32F031F6P6TR equivalent, key selection considerations include its TSSOP20 footprint, 5 V-tolerant I/Os (up to 26), programmable voltage detector (PVD), CRC unit, and SWD debug interface - all critical for resource-constrained embedded designs.

Technical Context

The device implements an ARM Cortex-M0 core with Harvard architecture, supporting Thumb-2 instruction set and NVIC with 32 interrupt vectors. Its clock system integrates multiple sources: 4–32 MHz HSE crystal, 32 kHz LSE for RTC, 8 MHz HSI with x6 PLL, and 40 kHz LSI for watchdogs.

Peripherals are tightly coupled via AHB/APB buses: the 12-bit ADC supports up to 10 channels with separate VDDA supply (2.4–3.6 V); TIM1 provides 6-channel PWM with configurable deadtime and emergency stop; and the I²C interface delivers 1 Mbit/s Fast Mode Plus with 20 mA sink capability and Stop-mode wakeup.

Key Specifications

Pinout & Package

TSSOP20 (6.5 × 4.4 mm, 0.65 mm pitch) - compact surface-mount package optimized for space-constrained PCB layouts while maintaining hand-solderability and thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F031F6P6TR, the F030F4P6 reduces feature set to lower cost but removes RTC and advanced PWM - limiting suitability for time-aware or motor control use cases; the F042F4P6 adds USB at the expense of 5 V tolerance, making it incompatible with legacy 5 V sensor buses.

Availability

STM32F031F6P6TR is available at Aetrix Electronics and suitable for industrial motor control, sensor node design, and smart lighting systems requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for STM32F031F6P6TR 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, designing and manufacturing microcontrollers, power management ICs, sensors, and analog products for industrial, automotive, and consumer markets.

The STM32F0 series targets cost-sensitive, resource-efficient embedded applications - delivering Cortex-M0 performance with industrial-grade reliability, low-power operation, and comprehensive peripheral integration in compact packages.

FAQ

What is the maximum operating frequency and how is it achieved?

The STM32F031F6P6TR achieves 48 MHz maximum CPU frequency using its internal 8 MHz HSI oscillator with a 6× PLL multiplier. Alternatively, an external 4–32 MHz crystal (HSE) can be used directly or with PLL scaling. The system clock is distributed via the AHB/APB prescalers, and all peripherals remain fully functional at full speed.

Does this MCU support hardware-based cryptographic functions?

No, the STM32F031F6P6TR does not include dedicated cryptographic accelerators (e.g., AES, SHA, PKA). It relies on software libraries for encryption tasks. For hardware crypto, consider STM32L4 or STM32G0 series parts with CryptoCell or AES engines - the F031 is optimized for deterministic real-time control, not security processing.

Can the ADC measure signals beyond the VDDA supply range?

No - the ADC input voltage range is strictly 0 to VDDA (2.4–3.6 V). Input signals exceeding VDDA risk damage or erroneous conversions. External signal conditioning (e.g., resistor dividers, op-amp clamping) is required for higher-voltage analog sources, and the internal VREFINT (1.2 V) or external reference can be selected for improved accuracy within the valid range.

Is SWD debug supported in all low-power modes?

SWD debug is disabled in Stop and Standby modes to minimize leakage current. It remains active in Sleep mode, allowing real-time variable inspection and breakpoint execution. To debug low-power behavior, use the Wakeup pin or RTC alarm to exit Stop mode under debugger control, then resume SWD session - full debug visibility requires waking the core first.