Item specifics
Description
The STM32F031F6P6 is a mainstream Arm Cortex-M0 access line 32-bit MCU from STMicroelectronics, housed in a TSSOP-20 package (6.5×4.4 mm). It incorporates a 48 MHz high-performance Arm Cortex-M0 32-bit RISC core, with 32 KB Flash, 4 KB SRAM with hardware parity, and a CRC calculation unit. On-chip peripherals include a 12-bit ADC (up to 10 channels, 1.0 µs conversion time), 5-channel DMA controller, calendar RTC with alarm and periodic wakeup, up to 9 timers (including one 16-bit advanced-control timer for 6-channel PWM output with deadtime generation and emergency stop, one 32-bit and three 16-bit general-purpose timers, independent and system window watchdog timers, and SysTick timer), and I2C (Fast Mode Plus 1 Mbit/s), SPI (18 Mbit/s, with I2S interface multiplexed), and USART (supporting master synchronous SPI and modem control, ISO7816 interface, LIN, IrDA, auto baud rate detection and wakeup). The device provides 15 fast I/Os, all mappable on external interrupt vectors. It operates from 2.0 V to 3.6 V over -40 °C to 85 °C. All packages are ECOPACK®2 compliant.
Arm Cortex-M0 Core: 32-bit Arm Cortex-M0 RISC core, up to 48 MHz, with built-in Nested Vectored Interrupt Controller Memory: 32 KB Flash, 4 KB SRAM with hardware parity, CRC calculation unit 12-bit ADC: 1.0 µs conversion time, up to 10 channels, conversion range 0 to 3.6 V, separate analog supply 2.4 V to 3.6 V 5-Channel DMA Controller: Flexible mapping for memory-to-memory, peripheral-to-memory, and memory-to-peripheral transfers 9 Timers: One 16-bit advanced-control timer (6-channel PWM output, deadtime generation, emergency stop), one 32-bit general-purpose timer (up to 4 IC/OC, usable for IR control decoding), three 16-bit general-purpose timers (one with emergency stop and modulator gate for IR control), independent watchdog, system window watchdog, SysTick timer Calendar RTC: With alarm and periodic wakeup from Stop/Standby Communication Interfaces: One I2C (Fast Mode Plus 1 Mbit/s support, SMBus/PMBus, 20 mA current sink, wakeup from Stop), one USART (supporting master synchronous SPI and modem control, ISO7816 interface, LIN, IrDA, auto baud rate detection and wakeup), one SPI (18 Mbit/s, 4 to 16 programmable bit frames, I2S interface multiplexed) Low-Power Modes: Sleep, Stop, Standby Clock Management: 4–32 MHz crystal oscillator, 32 kHz RTC crystal oscillator with calibration, internal 8 MHz RC with x6 PLL option, internal 40 kHz RC oscillator I/O Resources: 15 fast I/Os, all mappable on external interrupt vectors High Reliability: Power-on/power-down reset (POR/PDR), programmable voltage detector (PVD), serial wire debug (SWD), 96-bit unique ID Wide Operating Range: 2.0 V to 3.6 V, -40 °C to 85 °C (extended temperature range -40 °C to +105 °C optional) Green Packaging: ECOPACK®2 compliant, TSSOP-20 package (6.5×4.4 mm)
Consumer Electronics: Remote controls, electric toothbrushes, electronic toys, handheld devices, PC peripherals (printers, scanners) Industrial Control: Sensor transmitters, RS-485 communication nodes, small actuators, process monitoring Home Appliances: Induction/microwave oven panels, HVAC systems, alarm systems, smart lighting IoT Nodes: Wireless sensor terminals, environmental monitoring modules, smart home control LED Lighting: Dimming control, RGB strip drivers, switching power supply management Motor Control: Fans, pumps, small motor drives — advanced-control timer supports 6-channel PWM output, deadtime generation, and emergency stop Automotive Electronics: Vehicle light control, window anti-pinch, automotive sensor nodes (non-safety-critical)
Arm Cortex-M0 32-bit Performance: 48 MHz high-performance 32-bit ARM core, far exceeding 8/16-bit MCU processing capability for complex algorithms 32 KB Flash + 4 KB SRAM Configuration: 32 KB Flash program memory, 4 KB SRAM with hardware parity, meeting storage needs for low-to-medium complexity applications TSSOP-20 Compact Package: 6.5×4.4 mm small footprint, 15 fast I/Os, ideal for space-constrained applications 12-bit High-Speed ADC: 1.0 µs conversion time, 10 channels, separate analog supply, analog watchdog for precise monitoring 5-Channel DMA Offloads CPU: Enables direct data transfer between peripherals and memory, significantly reducing CPU load I2C Fast Mode Plus: 1 Mbit/s communication rate, 20 mA high current sink capability, SMBus/PMBus support — ideal for power management and sensor applications Rich Timer Resources: One 16-bit advanced-control timer (6-channel PWM, deadtime generation, emergency stop) + one 32-bit general-purpose timer (supporting IR control decoding) — ideal for motor control and infrared remote control applications Calendar RTC: Built-in hardware RTC with alarm and periodic wakeup — ideal for scheduled sensing applications Mature STM32 Ecosystem: Compatible with STM32CubeIDE, STM32CubeMX, HAL libraries, abundant development boards and reference designs Cost-Effective Access Line: 32-bit ARM performance at a competitive price — the ideal upgrade path from 8/16-bit MCUs
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FAQ:
What is the STM32F031F6P6 and what are its key specifications?
The STM32F031F6P6 is a 32‑bit ARM Cortex‑M0 microcontroller from STMicroelectronics, running at up to 48 MHz with 32 KB of Flash memory and 4 KB of SRAM. It includes a 12‑bit 1 Msps ADC, an advanced‑control timer (TIM1) capable of four complementary PWM outputs with hardware dead‑time insertion, plus USART, SPI, and I2C interfaces. All features are housed in a compact, easy‑to‑solder TSSOP‑20 package. It is specified for the standard industrial temperature range from ‑40 °C to +85 °C, making it suitable for most consumer, industrial, and general‑purpose applications.
What are the package dimensions and pin pitch of the STM32F031F6P6?
The device uses a TSSOP‑20 package with a body size of 6.5 mm × 4.4 mm and a lead pitch of 0.65 mm. The typical height is around 1.0 mm. The gull‑wing leads make it easy to hand‑solder, visually inspect, and even use with adapters for breadboard prototyping, offering a very practical balance between small size and ease of assembly.
How does the STM32F031F6P6 differ from the STM32F031F6P7? Which one should I choose?
Electrically and functionally, they are identical—same 48 MHz Cortex‑M0 core, 32 KB Flash, 4 KB SRAM, and peripherals like TIM1 and 12‑bit ADC. The only difference is the operating temperature range: the F6P6 is rated for ‑40 °C to +85 °C, while the F6P7 extends to ‑40 °C to +105 °C. Choose the F6P6 for standard consumer and industrial environments where 85 °C is sufficient. Choose the F6P7 if your design must endure hotter conditions, such as in‑vehicle applications or equipment near high‑temperature components.
How does the STM32F031F6P6 compare with the STM32F031G6U6? Which one fits my board better?
Both share identical CPU, memory, and peripherals. The difference is in the package: the F6P6 comes in a TSSOP‑20 with 15 I/O pins, while the G6U6 uses an ultra‑small UFQFPN28 (4×4 mm) providing up to 23 I/O pins. The TSSOP‑20 is hand‑solderable and great for prototyping or low‑volume production. The UFQFPN28 is smaller and offers more I/O, but requires reflow soldering. Choose F6P6 for ease of manual assembly; choose G6U6 when every square millimeter counts and you need the extra pins.
Is the STM32F031F6P6 an upgrade from the STM32F030F4P6? What do I gain?
Yes, it is a significant upgrade while keeping the same TSSOP‑20 footprint. The F030F4P6 provides only 16 KB Flash and lacks the advanced timer TIM1. The F031F6P6 doubles the Flash to 32 KB and adds TIM1 with complementary PWM and dead‑time, enabling direct control of brushless DC motors and half‑bridge circuits. If your application needs motor control, more code space, or complex waveform generation, the F031F6P6 is a clear step up.
What are the ADC specifications of the STM32F031F6P6? How many analog inputs can I use?
It integrates a 12‑bit successive‑approximation ADC sampling at up to 1 Msps. In the TSSOP‑20 package, 9 external channels are accessible: 8 channels (IN0–IN7) via PA0–PA7, and 1 channel (IN9) via PB1. Internal channels for the temperature sensor and voltage reference are also available without occupying any external pins. This makes the chip well‑suited for multi‑sensor acquisition, such as phase‑current sensing for sensorless motor control and environmental monitoring.
Can the STM32F031F6P6 be powered directly by 5 V? Are the I/Os 5‑volt tolerant?
No—the supply voltage must be kept within 2.0 V to 3.6 V. However, most I/O pins (PA0–PA7, PB1, PF0, PF1) are marked FT (5‑volt tolerant) and can safely accept input voltages up to 5 V. This allows direct connection to 5 V logic signals—either as digital inputs or through open‑drain outputs with an external pull‑up—eliminating external level shifters and simplifying mixed‑voltage designs.
How low is the power consumption of the STM32F031F6P6, and is it suitable for battery operation?
It delivers excellent low‑power performance. Running at 48 MHz with all peripherals active, the typical current is about 12.3 mA. Sleep mode reduces this to roughly 2.5 mA. In Stop mode, with the full 4 KB SRAM and registers retained, consumption drops to around 5 µA; Standby mode further lowers it to 1.2 µA. The fast wake‑up from Stop mode (responding to interrupts or UART activity) makes the chip ideal for battery‑powered devices that sleep most of the time and wake periodically for short measurement or communication tasks.
How do I program and debug the STM32F031F6P6? What tools do I need?
Programming and debugging use the SWD (Serial Wire Debug) interface, requiring only SWDIO, SWCLK, VCC, and GND. A low‑cost ST‑LINK/V2 or STLINK‑V3 debugger is all the hardware you need. On the software side, the free STM32CubeIDE is fully supported, along with Keil MDK and IAR EWARM. Use STM32CubeMX for quick graphical pinout and peripheral configuration. ST also provides comprehensive HAL and LL firmware libraries with plenty of example projects, helping you get a prototype running in minimal time.
What are the most typical applications for the STM32F031F6P6?
Thanks to its hand‑solderable TSSOP‑20 package, advanced motor‑control timer TIM1, and 12‑bit 1 Msps ADC, the F031F6P6 is widely used in compact brushless DC motor drives (small power tools, drone ESCs, micro pumps), smart sensor nodes, portable medical instruments, battery chargers, and general‑purpose industrial controllers. It is especially popular for rapid prototyping, educational projects, and low‑ to medium‑volume production where easy assembly and proven reliability are essential.