STMicroelectronics STM32F301K8U6

Overview

STM32F301K8U6 from STMicroelectronics is an Arm® Cortex®-M4 32-bit microcontroller with FPU, 64 KB Flash, 16 KB SRAM, and integrated analog peripherals including a 12-bit DAC, three rail-to-rail comparators, one operational amplifier (PGA-capable), and a 12-bit ADC with 0.20 μs conversion time. It operates from 2.0–3.6 V and targets sensor signal conditioning and motor control in compact industrial and consumer edge nodes.

For engineers reviewing the STM32F301K8U6 datasheet, STM32F301K8U6 pinout, STM32F301K8U6 application, or STM32F301K8U6 equivalent, key selection criteria include its 32-pin UFQFPN package, 72 MHz CPU clock, analog supply flexibility (VDDA 2.0–3.6 V, VREF+ 2.4–3.6 V), and integrated capacitive touch sensing support for up to 18 channels.

Technical Context

The STM32F301K8U6 implements a tightly coupled Cortex-M4 core with single-cycle multiply and hardware divide, enabling real-time DSP operations. Its analog subsystem includes a dedicated OPAMP with fully accessible terminals, three independent comparators with programmable hysteresis, and a temperature sensor with ±1.5°C accuracy over –40 to +125°C.

It features a 7-channel DMA controller supporting concurrent transfers across ADC, DAC, timers, SPI, I²C, and USART peripherals. Clock management includes dual oscillators (4–32 MHz HSE and 32 kHz LSE), internal 8 MHz RC with PLL, and 40 kHz LSI - enabling precise RTC operation and low-power wake-up timing down to 5.5 μs from Stop mode.

Key Specifications

Pinout & Package

STM32F301K8U6 uses the UFQFPN32 (5 × 5 mm) package with 32 pins, designed for high-density industrial and portable applications. Thermal pad on underside improves power dissipation during sustained analog operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F301K8U6, STM32F302K8U6 offers identical analog integration with minor memory/performance upgrades, while STM32G431KB6U6 delivers significantly higher compute throughput and dual-ADC parallel sampling - making it suitable for next-generation designs demanding greater algorithmic complexity.

Availability

STM32F301K8U6 is available at Aetrix Electronics and suitable for motor control interfaces, sensor signal conditioning, capacitive touch panels, and industrial power monitoring requiring stable component supply across extended product lifecycles.

Supply support for STM32F301K8U6 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 devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STM32F3 series targets cost-sensitive, analog-intensive embedded applications - combining high-precision analog peripherals with Cortex-M4 performance to replace discrete signal chains in motor control, sensing, and human-machine interfaces.

FAQ

What is the maximum operating frequency of the STM32F301K8U6?

The STM32F301K8U6 achieves a maximum CPU clock frequency of 72 MHz using its internal PLL driven by the 8 MHz HSI oscillator or an external 4–32 MHz crystal. This frequency is guaranteed across the full industrial temperature range (–40 to +85°C) and 2.0–3.6 V supply, enabling deterministic real-time execution of control loops and sensor processing algorithms.

Does the STM32F301K8U6 support hardware-accelerated cryptography?

No, the STM32F301K8U6 does not include hardware cryptographic accelerators such as AES, SHA, or PKA engines. It relies on software libraries for encryption tasks. For secure boot or data confidentiality, designers must implement lightweight cryptographic algorithms in Flash or use external secure elements - unlike later STM32G0/G4 series which integrate AES-128 accelerators.

Can the integrated OPAMP be used as a unity-gain buffer?

Yes, the STM32F301K8U6's single operational amplifier supports unity-gain buffer configuration via non-inverting mode with external feedback resistor network. Its rail-to-rail input/output and 10 MHz gain-bandwidth product allow stable buffering of sensor signals up to 100 kHz without phase shift - verified in ST Application Note AN4693.

What debug interfaces are supported by the STM32F301K8U6?

The STM32F301K8U6 supports Serial Wire Debug (SWD) and JTAG via dedicated SWCLK, SWDIO, and JTCK/JTDI/JTDO pins. SWD is the recommended interface for production programming and debugging due to its 2-pin footprint and full functionality - including flash programming, breakpoint setting, and real-time variable inspection using standard ARM-compliant tools like ST-Link v2/v3.