STMicroelectronics STM32F031E6Y6TR

Overview

STM32F031E6Y6TR from STMicroelectronics is an ARM® Cortex®-M0 32-bit microcontroller with 32 KB Flash, 4 KB SRAM (HW parity), and integrated peripherals including a 12-bit 1.0 µs ADC, nine timers (including advanced-control TIM1 with deadtime and emergency stop), and communication interfaces (I²C Fast Mode Plus, USART with IrDA/LIN/ISO7816, SPI up to 18 Mbit/s). It operates from 2.0–3.6 V and supports -40°C to +105°C industrial temperature range, targeting compact motor control and sensor interface applications.

For engineers reviewing the STM32F031E6Y6TR datasheet, STM32F031E6Y6TR pinout, STM32F031E6Y6TR application, or STM32F031E6Y6TR equivalent, key selection criteria include its 32-pin UFQFPN package, 48 MHz max CPU frequency, 5 V-tolerant I/O capability on up to 26 pins, and integrated RTC with alarm and periodic wakeup from Stop/Standby modes.

Technical Context

The STM32F031E6Y6TR implements a single-cycle ARM Cortex-M0 core with Thumb-2 instruction set, supporting deterministic real-time execution at up to 48 MHz via internal 8 MHz RC oscillator with x6 PLL or external 4–32 MHz crystal. Its clock tree includes dedicated 32 kHz LSE for RTC calibration and independent 40 kHz LSI for watchdog timing.

Peripherals are tightly coupled to the AHB/APB bus matrix: the 12-bit ADC features separate analog supply (2.4–3.6 V), hardware oversampling, and temperature sensor/VREFINT channels; TIM1 provides six-channel complementary PWM with programmable deadtime and synchronous emergency shutdown-critical for BLDC gate drive safety.

Key Specifications

Pinout & Package

STM32F031E6Y6TR uses a 32-pin Ultra-Fine Pitch Quad Flat No-lead (UFQFPN) package, 5 mm × 5 mm, 0.5 mm pitch, with exposed thermal pad. This compact, RoHS-compliant ECOPACK®2 package supports high-density PCB layouts and efficient thermal dissipation in space-constrained applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F031F4P6, the STM32F031E6Y6TR adds critical motor control features (TIM1, more I/O) and higher Flash; versus STM32F031K6T6, it offers superior thermal performance and smaller PCB area in the same pin count - making it optimal for space-constrained, thermally demanding applications.

Availability

STM32F031E6Y6TR is available at Aetrix Electronics and suitable for motor control, sensor interface, smart lighting, and home appliance control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STM32F031E6Y6TR 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 high reliability, low power, and rich analog/motor control peripherals - optimized for rapid development with full ecosystem support (HAL libraries, STM32CubeMX, Nucleo boards).

FAQ

What is the maximum operating frequency of the STM32F031E6Y6TR?

The STM32F031E6Y6TR achieves a maximum CPU frequency of 48 MHz using its internal 8 MHz RC oscillator with 6× PLL multiplication or an external 4–32 MHz crystal. This frequency is fully supported across the entire -40°C to +105°C operating temperature range and 2.0–3.6 V supply voltage, with all peripherals functional at full speed.

Does the STM32F031E6Y6TR support hardware CRC calculation?

Yes, the STM32F031E6Y6TR includes a dedicated cyclic redundancy check (CRC) calculation unit compliant with IEEE-802.3. It supports 32-bit polynomial computation (fixed 0x04C11DB7) on data blocks of arbitrary length, accelerating firmware integrity checks and communication frame validation without CPU overhead.

How many I/O pins are 5 V tolerant on this device?

Up to 26 I/O pins on the STM32F031E6Y6TR are 5 V tolerant when configured in input, output, or alternate function modes. This capability is explicitly guaranteed in the datasheet's "I/O port characteristics" section (Table 46) and applies to all GPIOs except those dedicated to analog functions (e.g., ADC inputs, VREF+), enabling direct interfacing with 5 V logic without external level shifters.

What debug interface does the STM32F031E6Y6TR provide?

The STM32F031E6Y6TR supports Serial Wire Debug (SWD) via dedicated SWDIO and SWCLK pins - a 2-wire ARM standard interface that replaces JTAG for programming and real-time debugging. It is fully compatible with ST-LINK/V2-1, SEGGER J-Link, and other SWD-compliant debug probes, with no additional configuration required beyond enabling the SWD clock in RCC_APB2ENR.