STMicroelectronics STM32F301K6T6TR

Overview

STM32F301K6T6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M4 MCU with FPU, 32 KB Flash, 16 KB SRAM, and integrated analog peripherals including 1×12-bit DAC, 1×rail-to-rail op-amp (PGA-capable), 3×fast comparators, and 1×0.20 μs ADC (12/10/8/6-bit selectable). It operates from 2.0–3.6 V and targets sensor signal conditioning and motor control in compact industrial HMI modules.

For engineers reviewing the STM32F301K6T6TR datasheet, STM32F301K6T6TR pinout, STM32F301K6T6TR application, or STM32F301K6T6TR equivalent, key selection criteria include its 32-pin LQFP package, 72 MHz max CPU frequency, analog supply flexibility (VDDA 2.0–3.6 V, VREF+ 2.4–3.6 V), and integrated capacitive touch sensing (up to 18 channels) for space-constrained embedded designs.

Technical Context

This MCU implements a tightly coupled Arm Cortex-M4 core with hardware FPU and DSP extensions, enabling real-time filtering and closed-loop control. Its analog subsystem features independent power domains: VDDA supplies the ADC, DAC, COMP, and OPAMP, while dedicated internal references (VREFINT, temperature sensor) support self-calibration without external components.

The interconnect matrix enables concurrent peripheral operation-e.g., simultaneous ADC sampling, DMA transfer to SRAM, and PWM generation on TIM1-with deterministic latency. Clock tree includes dual oscillators (HSE 4–32 MHz + LSE 32.768 kHz) and PLL for precise timing across analog and digital domains.

Key Specifications

Pinout & Package

LQFP32 (7 × 7 mm, 0.8 mm pitch) package with 32 pins, rated for industrial temperature range (–40 to +85 °C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F072CBT6, the STM32F301K6T6TR delivers integrated analog signal conditioning essential for sensor/motor systems; versus STM32G431KB6, it offers lower cost and smaller footprint where 32 KB Flash and single DAC suffice.

Availability

STM32F301K6T6TR is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, capacitive touch HMI, and programmable power supplies requiring stable component supply and long-term manufacturability.

Supply support for STM32F301K6T6TR 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, 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-designed to consolidate signal conditioning, control computation, and communication into a single chip for space- and power-constrained systems.

FAQ

What is the maximum operating frequency and supported voltage range?

The STM32F301K6T6TR operates at up to 72 MHz using its internal PLL and supports a VDD range of 2.0–3.6 V. The analog supply (VDDA) must be within 2.0–3.6 V for ADC/DAC/COMP/OPAMP functionality, and VREF+ requires 2.4–3.6 V for full 12-bit DAC linearity. All specifications are validated across the industrial temperature range (–40 to +85 °C).

Does this MCU support hardware-based capacitive touch sensing?

Yes, it integrates a dedicated Touch Sensing Controller (TSC) supporting up to 18 capacitive sensing channels. It provides hardware-accelerated electrode scanning, automatic recalibration, and noise immunity features-including spread spectrum and pulse counting-to reliably detect touchkey, linear, and rotary gestures without CPU intervention.

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

Yes, the single rail-to-rail op-amp supports PGA mode with gain settings of 1, 2, 4, 8, 16, or 32 via internal switch matrix configuration. All terminals (inverting/non-inverting inputs, output) are accessible on dedicated pins (e.g., PA1, PA2, PA3), enabling direct connection to external sensors and feedback networks without routing through GPIOs.

What debug interface does the STM32F301K6T6TR provide?

It supports Serial Wire Debug (SWD) using two pins (SWCLK and SWDIO), compatible with standard ARM Cortex debug probes (e.g., ST-LINK/V2, J-Link). SWD enables full breakpoint, register, and memory access, plus real-time variable watch-without requiring the 5-pin JTAG header, saving PCB space and simplifying layout.