STM32F031K6U6 - 48MHz Cortex-M0 MCU 32KB Flash | STMicroelectronics
MPN: STM32F031K6U6 ✓ نشطSTM32F031K6U6 نظرة عامة
A microcontroller (MCU) is a single-chip embedded processor combining a CPU core, memory, and programmable peripherals. The STM32F031K6U6 belongs to the STM32F0 entry-level family within the STM32 MCU ecosystem, positioned as a migration path from 8-bit and 16-bit MCUs to 32-bit ARM performance. It shares tooling, HAL libraries, and STM32CubeMX configuration software with the wider STM32 portfolio, simplifying future upgrades.
Key features include a 12-bit ADC with up to 13 channels, 9 timers, and standard communication interfaces: one I2C, one SPI/I2S, and one USART. The device operates from a 2.0V to 3.6V single supply with integrated POR/PDR reset, and offers a CRC calculation unit and DMA controller for data movement without CPU intervention. Real-time performance is supported by a nested vectored interrupt controller (NVIC) and single-cycle multiplier.
The Cortex-M0 architecture executes Thumb instruction sets with deterministic interrupt latency, making the device suitable for real-time control loops. The UFQFPN-32 (QFN family) surface-mount package provides a small 5x5 mm footprint with an exposed thermal pad for grounding, ideal for space-constrained boards. Operating temperature spans -40C to +85C for industrial reliability.
Typical applications include industrial control, consumer appliances, IoT sensor nodes, small motor control, and power-management subsystems, where low cost, low power consumption, and adequate peripheral integration matter most.
Design tip: decouple VDD pins with 100nF ceramics plus a bulk capacitor, feed VDDA from a clean analog supply to preserve ADC accuracy, and keep NRST properly filtered per the ST datasheet layout guidelines for EMI-robust designs.
بدائل مباشرة لـ STM32F031K6U6 — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع STM32F031K6U6 (نفس عامل الشكل والبصمة) — يختلف في Package, Flash Memory, Product Type, DMA, Series.
STM32F038K6U6
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
STM32F042K6U6
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منهاتواصل لمعرفة السعر
عرض ورقة البيانات ←STM32F031K4U6
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منهاتواصل لمعرفة السعر
عرض ورقة البيانات ←HK32F031K6U6
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
STM32G031K6U6
⚡ نفس الحزمةتواصل لمعرفة السعر
عرض ورقة البيانات ←STM32F031K6U6 الحدود القصوى والخصائص الكهربائية
| Core Processor | ARM Cortex-M0 32-bit |
| Core Size | 32-bit |
| أقصى تردد للساعة | 48 MHz |
| Flash Memory | 32 KB |
| SRAM | 4 KB |
| Supply Voltage Range | 2.0 V to 3.6 V |
| ADC Resolution | 12-bit, up to 13 channels |
| Timers | 9 (including advanced-control) |
| Communication Interfaces | 1x I2C, 1x SPI/I2S, 1x USART |
| DMA | Yes |
| CRC Unit | Yes |
| العلبة | 32-UFQFPN (5x5 mm), exposed pad |
| نوع التركيب | Surface Mount |
| درجة حرارة التشغيل | -40C to +85C |
| Oscillator | 4 to 32 MHz crystal oscillator |
| Reset | POR/PDR integrated |
| حالة RoHS | Compliant |
تكوين أطراف STM32F031K6U6
| دبوس 1 | VDD/VDDA — Power supply 2.0V to 3.6V |
| دبوس 2 | PF0/OSC_IN — Oscillator input or GPIO |
| دبوس 3 | PF1/OSC_OUT — Oscillator output or GPIO |
| دبوس 4 | NRST — Bidirectional reset, active low |
| دبوس 5 | PA0 — GPIO / ADC channel / WKUP |
| دبوس 6 | PA1 — GPIO / ADC channel |
| دبوس 7 | PA2 — GPIO / USART TX |
| دبوس 8 | PA3 — GPIO / USART RX |
| دبوس 14 | PA13/SWDIO — Serial wire debug data I/O |
| دبوس 15 | PA14/SWCLK — Serial wire debug clock |
| دبوس 16 | PA15 — GPIO / SPI NSS |
| دبوس 32 | VSS / EP — Ground, exposed pad |
التطبيقات النموذجية
STM32F031K6U6 مناسب لـ 6 التطبيقs: IoT Sensor Nodes, Small Motor Control, Industrial Control and Automation, Consumer Appliances, Power Management Subsystems, Human-Machine Interface (HMI) Boards.
IoT Sensor Nodes
The STM32F031K6U6 fits battery-powered IoT sensor nodes because its 48 MHz Cortex-M0 core offers just enough compute for sensor sampling and filtering while drawing minimal power from a 2.0V to 3.6V supply. Its 12-bit ADC with 13 channels digitizes analog sensors directly, and the I2C/SPI/USART interfaces connect RF modules or external memory. Running bare-metal firmware in the 32 KB Flash with sleep-mode duty cycling extends battery life, and the small 5x5 mm UFQFPN-32 package suits compact node PCBs.
موصى به
Small Motor Control
With 9 timers including advanced-control timers for PWM generation, plus a 12-bit ADC for current and position feedback, the STM32F031K6U6 implements trapezoidal or basic sensorless BLDC control in appliances, fans, and small pumps. The 48 MHz core executes commutation loops deterministically via the NVIC, while PWM dead-time features protect the power stage. Its UART interface supports host communication, and the 32 KB Flash stores control firmware with room for diagnostics. The exposed-pad UFQFPN-32 package simplifies thermal grounding on motor-driver PCBs.
موصى به
Industrial Control and Automation
In industrial control panels, the STM32F031K6U6 serves as a low-cost interface MCU handling button inputs, relay outputs, and RS-485 or UART communication to a PLC host. The -40C to +85C temperature range and integrated POR/PDR ensure reliable operation in electrically noisy cabinets, while the CRC unit validates communication frames without CPU cycles. The 32 KB Flash accommodates state-machine firmware, and SWD via PA13/PA14 allows field programming. Solid decoupling of VDD/VDDA per ST layout guidelines preserves ADC accuracy in noisy environments.
موصى به
Consumer Appliances
The STM32F031K6U6 provides appliance-control brains for coffee makers, small pumps, hair styling tools, and chargers, where BOM cost is decisive. Its single USART handles user-interface or master-board communication, the 12-bit ADC reads temperature sensors and potentiometers, and timers generate PWM for heaters, LEDs, or small motors. Operating down to 2.0V allows direct battery operation, and the 5x5 mm UFQFPN-32 package fits dense consumer PCBs. STM32CubeMX and HAL libraries shorten development cycles, keeping total engineering cost low for high-volume products.
موصى به
Power Management Subsystems
The STM32F031K6U6 acts as a supervisory and sequencing MCU in power-management subsystems, monitoring voltages via its 12-bit ADC, generating PWM for bias supplies or fan control, and communicating status over UART or I2C to a system host. The DMA controller offloads ADC sampling from the CPU, and the CRC unit protects telemetry frames. Its wide 2.0V to 3.6V operating range and sleep modes keep standby consumption minimal. When paired with ST-compatible gate drivers and regulators, it forms a complete low-cost digital power control node.
موصى به
Human-Machine Interface (HMI) Boards
As the controller of small HMI boards with buttons, LEDs, and status indicators, the STM32F031K6U6 scans keypads through its GPIO matrix, drives LED PWM dimming from its timers, and reports events via USART to a main system controller. The 48 MHz core provides responsive debounce and menu logic, while the 4 KB SRAM holds display buffers for simple segment or OLED controllers on I2C/SPI. SWD programming on PA13/PA14 enables in-field firmware updates, and the compact UFQFPN-32 footprint suits thin front-panel PCB assemblies in consumer and industrial products.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ STM32F031K6U6 — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | STM32F038K6U6 | STM32F042K6U6 | HK32F031K6U6 | STM32G031K6U6 |
|---|---|---|---|---|---|
| Package | 32-UFQFPN (5x5 mm) | 32-UFQFPN (5x5 mm) - same | 32-UFQFPN (5x5 mm) - same | 32-UFQFPN (5x5 mm) - same | 32-UFQFPN (5x5 mm) - same footprint, different pinout |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | HOLYCHIP (HK) | STMicroelectronics |
| Core | ARM Cortex-M0 @ 48 MHz | ARM Cortex-M0 @ 48 MHz | ARM Cortex-M0 @ 48 MHz | ARM Cortex-M0 @ 48 MHz (claimed) | ARM Cortex-M0+ @ 64 MHz |
| Flash | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| USB | No | No | Yes (crystal-less FS device) | No | No |
| Drop-in Replacement | - | Yes | Yes (verify per design) | Yes (sample-test recommended) | No - redesign required |
أبرز الفروقات
- Lowest-cost F0 family member with DMA and CRC (مقابلSTM32F038K6U6)
- Lower total cost than USB-capable sibling (مقابلSTM32F042K6U6)
- Mature ST ecosystem vs cross-brand equivalents (مقابلHK32F031K6U6)
ملاحظات التصميم
Decouple each VDD pin with a 100nF ceramic capacitor placed within 2mm of the pin, plus one 4.7uF bulk capacitor per supply domain. Connect VDDA to VDD through a filter (ferrite bead or 10-ohm resistor with 1uF+10nF) to maintain ADC accuracy, since the 12-bit ADC shares its reference path with VDDA. Ensure the 2.0V-3.6V supply stays within spec during brownouts; the integrated POR/PDR handles reset but not supply dips below 2.0V.
Solder the UFQFPN-32 exposed pad to a solid ground plane for thermal dissipation and EMI performance - do not leave it floating. Use short return paths for the SWD pins (PA13/PA14) if programming connectors are off-board. Keep the NRST line short with a 100nF pull-down capacitor per ST recommendation; avoid routing it near switching nodes. A continuous ground plane under the QFN reduces loop area for fast GPIO edges.
The STM32F031 family has no USB and limited flash (32KB), so firmware written for larger F0/F1 parts may not fit - check code size early. GPIO pin functions in the UFQFPN-32 are heavily remapped versus larger packages; verify the pin-mapping table in the datasheet, not the family reference manual alone. Debug via SWD only (no JTAG on this device). Also, HSI accuracy is about 1% - do not use it for precision USART baud rates without correction.
معلومات الامتثال
RoHS compliant per distributor listings (DigiKey/Mouser). Not an automotive AEC-Q100 qualified part.
