STMicroelectronics STM32F031F4P7

Overview

STM32F031F4P7 from STMicroelectronics is an ARM® Cortex®-M0 32-bit microcontroller with 16 KB Flash, 4 KB SRAM, 48 MHz max CPU frequency, 12-bit ADC (1.0 µs conversion), and integrated I²C, USART, SPI interfaces - deployed in industrial sensor nodes, smart metering front-ends, and low-power motor control modules.

For engineers reviewing the STM32F031F4P7 datasheet, STM32F031F4P7 pinout, STM32F031F4P7 application, or STM32F031F4P7 equivalent, key selection criteria include Flash/SRAM size, 5 V-tolerant I/O count (up to 26), RTC with alarm/wakeup, programmable voltage detector (PVD), and TSSOP20 package thermal performance at -40°C to +105°C.

Technical Context

The device implements a single-cycle ARM Cortex-M0 core with Thumb-2 instruction set, supporting deterministic real-time execution and NVIC-based interrupt handling with up to 32 external interrupts. Its clock system integrates dual oscillators (4–32 MHz HSE and 32 kHz LSE), internal 8 MHz RC with x6 PLL, and 40 kHz LSI for independent watchdog timing.

Power architecture includes dedicated VDDA analog supply (2.4–3.6 V), hardware parity on SRAM, CRC calculation unit, and three low-power modes (Sleep, Stop, Standby) with wake-up via EXTI, RTC alarm, or I²C address match - enabling sub-µA standby current with RTC and backup registers retained.

Key Specifications

Pinout & Package

TSSOP20 package (6.5 × 4.4 mm, 0.65 mm pitch), RoHS-compliant and ECOPACK®2 certified, optimized for compact PCB layouts and automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F031F4P7, the F030F4P6 sacrifices analog integrity and supply supervision for lower BOM cost, while the G031F6P6 trades RTC calendar functionality for higher compute throughput and USB - making the F031F4P7 optimal for time-aware, analog-intensive, and safety-extended industrial edge nodes.

Availability

STM32F031F4P7 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meter front-ends, and BLDC motor controllers requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for STM32F031F4P7 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 ICs, sensors, and automotive-grade components since 1987.

The STM32F0 series targets cost-sensitive, resource-constrained embedded applications demanding high reliability, low power, and industrial temperature operation - with the F031 subgroup optimized for TSSOP20 footprint and analog-rich control tasks.

FAQ

What is the maximum operating frequency of the STM32F031F4P7 core?

The STM32F031F4P7 features an ARM Cortex-M0 core rated for up to 48 MHz operation, achievable using the internal 8 MHz RC oscillator with 6× PLL multiplication or an external 4–32 MHz crystal. This frequency is validated across the full -40°C to +105°C temperature range and 2.0–3.6 V supply, with timing closure confirmed per ST's characterization data (DocID025743 Rev 6, Section 6.3.19).

Does the STM32F031F4P7 support hardware-accelerated cryptographic operations?

No, the STM32F031F4P7 does not include dedicated cryptographic accelerators (e.g., AES, SHA, or PKA). It relies on software libraries for encryption tasks. Security features are limited to read-out protection (RDP), write protection (WRP), and secure boot via system memory bootloader - consistent with its entry-level F0-series positioning for non-security-critical control applications.

Can the STM32F031F4P7's ADC measure signals above 3.6 V?

No - the ADC input voltage range is strictly 0 to VREF+ (max 3.6 V), with VREF+ tied to VDDA. Applying >3.6 V to any ADC input channel risks damage or erroneous conversions. For higher-voltage signals, external resistive dividers or signal-conditioning amplifiers with rail-to-rail output must be used to scale inputs within the 0–3.6 V window, as specified in Section 6.3.16 of the datasheet.

Is the TSSOP20 package of the STM32F031F4P7 compatible with reflow soldering per JEDEC J-STD-020?

Yes - the TSSOP20 package (package code P7) is qualified for standard lead-free reflow soldering per JEDEC J-STD-020D. Peak temperature is 260°C, with ramp-up rate ≤3°C/s and time above 217°C limited to 60–150 seconds. Thermal profile validation is documented in ST's packaging specification UM1729, and the device carries ECOPACK®2 environmental compliance certification.