STMicroelectronics STM32F301K8U6TR

Overview

STM32F301K8U6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M4 MCU with FPU, 64 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 (15-channel, 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 edge nodes.

For engineers reviewing the STM32F301K8U6TR datasheet, STM32F301K8U6TR pinout, STM32F301K8U6TR application, or STM32F301K8U6TR equivalent, key selection criteria include its embedded op-amp with full terminal access, 72 MHz CPU with hardware DSP instructions, capacitive touch sensing support (up to 18 channels), and UFQFPN32 package compatibility with space-constrained PCB layouts.

Technical Context

This MCU integrates a tightly coupled analog subsystem: the op-amp supports programmable gain amplifier (PGA) mode with external feedback, all five terminals accessible; the three comparators feature rail-to-rail input and fast response (<150 ns propagation delay); the 12-bit DAC has dedicated analog supply (2.4–3.6 V) and is driven by TIM6 for precise timing.

The interconnect matrix enables concurrent peripheral operation without bus contention; DMA channels (7) support zero-CPU-overhead transfers between ADC, DAC, SPI, I²C, and USART; clock tree includes dual oscillators (4–32 MHz HSE + 32 kHz LSE) plus calibrated internal RC sources (8 MHz HSI, 40 kHz LSI) for robust low-power RTC and wake-up timing.

Key Specifications

Pinout & Package

UFQFPN32 package: 5 mm × 5 mm body, 0.5 mm pitch, 32-pin square grid, exposed thermal pad (EP), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F301K8U6TR, STM32F072CBT6 sacrifices analog integration and DSP capability for lower cost, while STM32G431KB6 delivers significantly enhanced analog and timing resources at the expense of larger package size and higher power consumption in active mode.

Availability

STM32F301K8U6TR is available at Aetrix Electronics and suitable for industrial motor drives, sensor edge nodes, capacitive HMI interfaces, and power supply supervisory systems requiring stable component supply and long-term manufacturability.

Supply support for STM32F301K8U6TR 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 applications requiring high-precision signal acquisition and real-time control - optimized for industrial automation, medical instrumentation, and smart home devices.

FAQ

What is the maximum operating frequency of the STM32F301K8U6TR?

The STM32F301K8U6TR features an Arm Cortex-M4 core with FPU, rated for a maximum system clock frequency of 72 MHz. This is achieved using the internal PLL with HSE (4–32 MHz) or HSI (8 MHz) as input source. All peripherals operate synchronously at this frequency unless prescaled, and the core maintains single-cycle multiplication and hardware division at full speed.

Does the STM32F301K8U6TR support hardware-accelerated cryptographic functions?

No, the STM32F301K8U6TR 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 encryption, external secure elements or higher-series STM32 variants (e.g., STM32L5, STM32H7 with CryptoCell) are required.

Can the integrated op-amp be used in transimpedance configuration?

Yes, the integrated op-amp supports transimpedance amplifier (TIA) configuration: its non-inverting input (PA7) and inverting input (PA6) are fully accessible, and the output (PA1 or PB1 depending on routing) can drive feedback networks. External feedback resistor and capacitor values determine gain and bandwidth, with design constrained by the op-amp's 10 MHz GBW and rail-to-rail output swing.

What debug interfaces are supported by the STM32F301K8U6TR?

The STM32F301K8U6TR supports Serial Wire Debug (SWD) and JTAG via the SWJ-DP (Serial Wire JTAG Debug Port). SWD uses two pins (SWCLK and SWDIO) and is recommended for production programming and debugging; JTAG requires five pins and is supported for legacy tool compatibility. Both interfaces enable full memory access, breakpoint setting, and real-time variable inspection during development.