STMicroelectronics STM32F301K8T6

Overview

STM32F301K8T6 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, 64 KB Flash, 16 KB SRAM, and integrated analog peripherals including 12-bit DAC, three rail-to-rail comparators, one operational amplifier (PGA-capable), and 15-channel 12-bit ADC (0.20 μs conversion). It operates from 2.0–3.6 V and targets sensor signal conditioning, motor control, and capacitive touch interfaces in industrial and consumer edge devices.

For engineers reviewing the STM32F301K8T6 datasheet, STM32F301K8T6 pinout, STM32F301K8T6 application, or STM32F301K8T6 equivalent, key selection criteria include its single-cycle DSP-capable M4 core, analog supply flexibility (VDDA 2.0–3.6 V, VREF 2.4–3.6 V), 51 GPIOs with interrupt mapping, and integrated TSC supporting up to 18 capacitive sensing channels - critical for low-latency human interface designs.

Technical Context

The STM32F301K8T6 implements a tightly coupled Cortex-M4 core with hardware floating-point unit and DSP extensions, enabling real-time filtering and control loop execution at up to 72 MHz. Its interconnect matrix routes DMA transfers between 7 channels and peripherals including ADC, DAC, timers, SPI, I2C, and USART without CPU intervention.

Analog subsystem integration includes independent voltage domains: VDDA powers ADC/DAC/COMP/OPAMP with selectable analog reference (2.4–3.6 V), while digital logic runs on VDD (2.0–3.6 V). The OPAMP supports programmable gain amplifier (PGA) mode with all terminals accessible, and comparators feature fast propagation delay (<150 ns) and windowed detection capability.

Key Specifications

Pinout & Package

LQFP32 (7 × 7 mm, 0.8 mm pitch) package with 32-pin layout optimized for compact industrial control and HMI applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F302K8T6, the STM32F301K8T6 omits USB but retains identical analog subsystem performance and lower system-level BOM cost; versus STM32G431K8T6, it trades peak compute for proven analog integration stability and simpler power domain management.

Availability

STM32F301K8T6 is available at Aetrix Electronics and suitable for industrial motor control, capacitive touch interfaces, smart sensor nodes, and power supply monitoring requiring stable component supply across multi-year production cycles.

Supply support for STM32F301K8T6 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, specializing in microcontrollers, power management, and analog/mixed-signal ICs for industrial, automotive, and consumer markets.

The STM32F3 series targets cost-sensitive, analog-intensive embedded applications - emphasizing integrated opamps, comparators, and capacitive sensing to reduce external component count in sensor signal chains and human-machine interfaces.

FAQ

What is the maximum operating frequency and supported voltage range?

The STM32F301K8T6 operates at up to 72 MHz using its internal PLL and supports a VDD/VDDA supply range of 2.0–3.6 V. Its VBAT pin accepts 1.8–3.6 V for RTC and backup registers. All electrical characteristics in the DS9895 Rev 8 datasheet are validated across this full voltage and temperature range (–40°C to +85°C).

Does this MCU support hardware-accelerated capacitive touch sensing?

Yes - it integrates a dedicated Touch Sensing Controller (TSC) supporting up to 18 electrodes with hardware-based charge transfer measurement, spread spectrum modulation, and automatic recalibration. Pin assignments for TSC channels are fixed per port (e.g., PA0–PA7, PB0–PB1, PF0–PF1) and require no CPU intervention during scanning.

Can the operational amplifier be configured as a programmable gain amplifier?

Yes - the single rail-to-rail OPAMP supports PGA mode where gain is set via internal switches (1×, 2×, 4×, 8×, 16×, 32×, 64×, 100×) using OPAMPx_CSR register bits. All terminals (non-inverting input, inverting input, output) are exposed on GPIO pins (PA1, PA2, PA3), allowing external feedback networks for precision gain setting.

What debug interfaces are supported and what pins do they use?

The STM32F301K8T6 supports Serial Wire Debug (SWD) using SWCLK (PA14) and SWDIO (PA13), plus full JTAG via TMS, TCK, TDI, TDO, and TRST pins. SWD requires only two pins and delivers full debug capability including breakpoints, memory inspection, and real-time variable watch - ideal for space-constrained LQFP32 layouts.