STMicroelectronics STM32F301K6T6

Overview

STM32F301K6T6 from STMicroelectronics is an Arm® Cortex®-M4 32-bit microcontroller with FPU, 32 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 edge nodes.

For engineers reviewing the STM32F301K6T6 datasheet, STM32F301K6T6 pinout, STM32F301K6T6 application, or STM32F301K6T6 equivalent, key selection criteria include its 32-pin LQFP package, 72 MHz CPU clock, analog supply flexibility (VDDA 2.0–3.6 V, VREF+ 2.4–3.6 V), and embedded capacitive touch sensing support for human-machine interface designs.

Technical Context

The device implements a tightly coupled Arm Cortex-M4 core with single-cycle multiply, hardware divide, and DSP extensions, enabling real-time control loops. Its analog subsystem includes independent voltage domains: VDDA powers ADC/DAC/COMP/OPAMP with dedicated filtering, while VREF+ supplies the DAC reference at 2.4–3.6 V.

The interconnect matrix enables concurrent peripheral access without bus contention, and the 9-timer suite includes one 32-bit general-purpose timer with quadrature encoder input, one advanced-control timer with deadtime generation, and a dedicated 16-bit basic timer for DAC triggering-supporting precise timing-critical analog-digital co-processing.

Key Specifications

Pinout & Package

LQFP32 (7 × 7 mm, 0.8 mm pitch) package with exposed thermal pad; 32-pin layout optimized for analog-noise-sensitive routing and compact PCB footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F301K6T6, STM32F303K8T6 offers expanded analog capability and USB for connected edge devices, while STM32G031K8T6 trades analog integration for lower cost and power in purely digital control tasks - making the F301 optimal for analog-rich, space-constrained industrial nodes.

Availability

STM32F301K6T6 is available at Aetrix Electronics and suitable for motor control interfaces, sensor signal conditioning systems, capacitive touch HMIs, and power supply monitoring modules requiring stable component supply across multi-year production cycles.

Supply support for STM32F301K6T6 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 components for industrial, automotive, and consumer markets.

The STM32F3 series targets cost-sensitive, analog-intensive embedded applications - emphasizing integrated op-amps, comparators, and high-resolution ADC/DAC to reduce external component count in signal acquisition and control systems.

FAQ

What is the maximum operating frequency and supported voltage range for STM32F301K6T6?

The STM32F301K6T6 operates at up to 72 MHz using its internal PLL and supports a VDD supply range of 2.0 V to 3.6 V. Its analog peripherals require VDDA within the same 2.0–3.6 V range, while the DAC reference input (VREF+) accepts 2.4–3.6 V - enabling precise analog output scaling even at lower core supply voltages.

Does STM32F301K6T6 support hardware-based capacitive touch sensing?

Yes, it integrates a dedicated Touch Sensing Controller (TSC) supporting up to 18 capacitive sensing channels. This hardware accelerator handles electrode scanning, noise filtering, and baseline tracking autonomously, allowing implementation of touchkeys, linear sliders, and rotary wheels without CPU intervention or external touch ICs.

Can the operational amplifier be configured as a programmable-gain amplifier (PGA)?

Yes, the single integrated op-amp supports PGA mode with selectable gains of 1, 2, 4, 8, 16, and 32 via internal resistor ladder configuration. All op-amp terminals (inverting/non-inverting input, output) are accessible on GPIO pins, enabling flexible feedback network design and direct connection to ADC inputs for digitized amplified signals.

What debug interfaces are available and how do they differ in pin count and functionality?

The device supports Serial Wire Debug (SWD) and JTAG via the SWJ-DP interface. SWD uses only two pins (SWCLK and SWDIO) and provides full debug, flash programming, and real-time trace capabilities. JTAG requires five pins but is rarely needed - SWD is the recommended interface for minimal footprint and full development functionality.