STM32F301K8U7 - 72MHz Cortex-M4 64KB MCU | STMicroelectronics
MPN: STM32F301K8U7 ✓ ActiveSTM32F301K8U7 Overview
An Arm Cortex-M4 microcontroller is a 32-bit embedded processing core designed around the Thumb instruction set. The STM32F3 family combines that core with a floating-point unit, single-cycle multiplication, hardware division, and DSP instructions. In the STM32F301K8U7, this processing capability is paired with 64 KB of Flash for firmware and 16 KB of SRAM for working data, making the device suitable for control-oriented designs that need deterministic real-time performance without an external memory interface.
The verified device data identifies a maximum operating frequency of 72 MHz, 64 KB of Flash organized as 64K x 8, and 16 KB of SRAM. The single-cycle multiplier, hardware divider, DSP instructions, and integrated FPU accelerate filtering, control calculations, and other floating-point workloads. Its mixed-signal feature set also supports applications combining digital processing with analog measurement and output functions.
The 32-pin UFQFPN package is only 5 x 5 mm, allowing a compact printed-circuit-board footprint while preserving access to the family’s GPIO, communications, timer, ADC, DAC, and other mixed-signal resources. The exposed thermal pad provides a direct heat-transfer path from the device to the PCB. Package dimensions, individual pin assignments, voltage limits, and detailed peripheral electrical characteristics require confirmation from the manufacturer documentation before PCB release or production use.
Typical uses include industrial sensing and automation equipment, compact motor-control systems, embedded instrumentation, communication modules, and low-cost consumer controllers. The Cortex-M4 DSP and FPU features are particularly useful when the control loop must perform filtering or arithmetic operations beyond the capabilities of a basic Cortex-M0 or Cortex-M3 design. The 64 KB memory footprint is appropriate for moderately complex firmware without external storage.
Designers should preserve the exposed-pad land pattern, follow the manufacturer’s recommended copper and thermal-via arrangement, and verify every peripheral pin against the official STM32F301x6/8 documentation. Firmware development can use the STM32F3 family ecosystem, while programming and debugging setups should be matched to the device’s supported debug and boot interfaces. Exact supply voltage, pin names, peripheral configuration, and environmental limits are marked for verification where the supplied source snippets do not state them.
This product record combines verified distributor and manufacturer information with application analysis, selection guidance, and same-family replacement candidates. Unlike a distributor listing that mainly summarizes inventory, it also identifies what is known, what still requires datasheet verification, and which alternatives require firmware, timing, or qualification review before use.
Drop-in alternatives for STM32F301K8U7 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
STM32F302K8U6
✅ Drop-In📋 Reference alternative (not in catalog)
STM32F301K8U6
✅ Drop-In ⚠️ Specs UnverifiedContact for price
View Datasheet →STM32F302K8U7
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
STM32F303K8U6
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
STM32F303K8U7
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
STM32F301K8U7 Maximum Ratings & Electrical Characteristics
| Product Type | 32-bit ARM Cortex-M4 microcontroller |
| CPU Core | Arm Cortex-M4 with FPU |
| Maximum CPU Frequency | 72 MHz |
| Flash Memory | 64 KB (64K x 8) |
| SRAM | 16 KB |
| Architecture | 32-bit RISC |
| Multiplication | Single-cycle multiplication |
| Division | Hardware division |
| DSP Support | DSP instruction support |
| Floating-Point Unit | Integrated FPU |
| Package | 32-pin UFQFPN, 5 x 5 mm |
| Exposed Pad | Present |
| Mounting Type | Surface mount |
| Product Family | STM32F3 mixed-signal microcontroller family |
STM32F301K8U7 32-pin ufqfpn, 5 x 5 mm Pin Configuration Guide
Pin configuration for STM32F301K8U7 (32-pin ufqfpn, 5 x 5 mm package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for STM32F301K8U7.
Refer to the datasheet for full pin configuration.
Typical Applications
STM32F301K8U7 is suitable for 6 applications: Industrial Sensor and Condition Monitoring, Compact Motor Control, Embedded Communication Gateway, Digital Audio and Signal Processing, Battery-Powered Portable Controller, Programmable Logic and Test Equipment.
Industrial Sensor and Condition Monitoring
The STM32F301K8U7 fits compact condition-monitoring controllers because its 72 MHz Arm Cortex-M4 core can execute sampling loops and filtering while the DSP instructions and integrated FPU accelerate arithmetic-heavy signal processing. The device provides 64 KB of Flash for application firmware and 16 KB of SRAM for working buffers, and its mixed-signal STM32F3 architecture supports the combination of digital processing and analog measurement. In an installation, the MCU could acquire sensor data, apply filtering or compensation, evaluate alarm thresholds, and publish results through a serial interface. The principal design trade-off is limited SRAM and Flash compared with larger STM32 families, so applications requiring extensive data logging need an external memory device or a different MCU.
Recommended
Compact Motor Control
The STM32F301K8U7 is suitable for compact motor-control and actuator-control designs where a 72 MHz Cortex-M4 core can run control calculations and the DSP instructions can accelerate filtering or transformation of position feedback. Its 64 KB of Flash and 16 KB of SRAM support moderate firmware complexity without external program memory, while the 5 x 5 mm UFQFPN package preserves board area. A practical implementation would use the MCU for timer-based control, read position or current feedback, calculate the next command, and drive an external power stage. Because the supplied snippets do not enumerate PWM channels, ADC rates, or op-amp features, the exact timer assignment and analog bandwidth must be checked against the official datasheet before selecting the motor-control topology.
Recommended
Embedded Communication Gateway
The STM32F301K8U7 can serve as the protocol-processing controller in a compact communications gateway because its 72 MHz Cortex-M4 core provides sufficient performance for framing, routing, and real-time protocol work. The integrated FPU is useful when the gateway also handles compressed data, digital filtering, or other numerical tasks, and the DSP instruction set improves throughput compared with a basic Cortex-M core. The device can be paired with a network interface such as Ethernet PHY or isolated communications hardware, while its small package supports enclosure-constrained designs. The supplied information does not confirm the exact UART, SPI, I2C, USB, or CAN channel count, so the communication peripheral allocation must be verified in the STM32F301x6/8 documentation before PCB assignment.
Recommended
Digital Audio and Signal Processing
The STM32F301K8U7 is applicable to compact audio and general digital signal-processing modules because the Cortex-M4 core includes an FPU, single-cycle multiplication, hardware division, and DSP instructions. At up to 72 MHz, it can execute filters, mixing, modulation, or control algorithms while retaining 64 KB of Flash for firmware and 16 KB of SRAM for sample buffers. In a design, the MCU could receive PCM or control data, process it in blocks, and drive a codec, class-D controller, or other digital audio path. Actual audio-channel count, supported sample rates, and interface electrical characteristics are not present in the supplied snippets, so those specifications must be confirmed before assigning the device as the primary audio processor.
Recommended
Battery-Powered Portable Controller
The STM32F301K8U7 can support portable and battery-powered controllers where a compact 5 x 5 mm package and efficient 32-bit processing reduce board-space demands. Its Cortex-M4 core, 64 KB of Flash, and 16 KB of SRAM support compact application logic, while the DSP instructions and FPU permit efficient computation without moving every numerical operation to a separate accelerator. In a wearable accessory, portable instrument, or service tool, the MCU could control sensors, process local data, and manage a serial link while a companion power-management IC regulates the battery rail. The provided source material does not state the STM32F301K8U7 sleep currents, active current, or fast-mode wake-up time, so battery-life and responsiveness claims must be based on manufacturer test data.
Recommended
Programmable Logic and Test Equipment
The STM32F301K8U7 is a candidate for compact programmable test and measurement logic because its 72 MHz Cortex-M4 core combines fast integer execution with DSP and floating-point capabilities. With 64 KB of Flash and 16 KB of SRAM, it can implement acquisition sequencing, limit checks, calibration tables, and communication protocols in a small embedded controller. The device may sit between sensors or a DUT and a host interface, applying configuration commands and returning status or measurements. The mixed-signal family positioning supports analog-adjacent signal-chain designs, but the supplied material does not specify ADC accuracy, DAC resolution, comparator performance, or reference accuracy. Those parameters must be reviewed directly in the manufacturer datasheet before assigning it to precision instrumentation.
Recommended
Recommended Products Summary
Engineering reference data for STM32F301K8U7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM32F302K8U6 | STM32F301K8U6 | STM32F302K8U7 | STM32F303K8U6 | STM32F303K8U7 |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 32-UFQFPN (5x5) | UFQFPN-32 | 32-UFQFPN (5x5) | 32-UFQFPN (5x5) | 32-UFQFPN (5x5) | 32-UFQFPN (5x5) |
| CPU Core | Arm Cortex-M4 with FPU | Arm Cortex-M4 | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU |
| Maximum CPU Frequency | 72 MHz | 72 MHz | 72 MHz | 72 MHz | 72 MHz | 72 MHz |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| SRAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| DSP and Arithmetic Features | DSP instructions, single-cycle multiplication, hardware division, and FPU | Arm Cortex-M4 with DSP-oriented arithmetic support | DSP instructions, single-cycle multiplication, hardware division, and FPU | DSP instructions, single-cycle multiplication, hardware division, and FPU | DSP instructions, single-cycle multiplication, hardware division, and FPU | DSP instructions, single-cycle multiplication, hardware division, and FPU |
| Temperature Suffix | U7 | U6 | U6 | U7 | U6 | U7 |
Key Differentiators
- Directly verified STM32F301 family identity (vs STM32F302K8U6)
- Matches the U7 temperature-grade suffix (vs STM32F302K8U6)
- Same core frequency and memory organization (vs STM32F303K8U7)
Design Notes
The verified package description identifies an exposed pad in the 32-pin UFQFPN 5 x 5 mm package. Preserve the manufacturer’s exposed-pad land geometry and place thermal vias under or near the pad according to the official package drawing. Estimated: no numerical junction-temperature rise can be calculated because the verified snippets do not provide maximum power dissipation, thermal resistance, or ambient-temperature limits. Validate thermal performance using the package-specific RthetaJA or RthetaJC data and the actual PCB copper area.
Do not route the board from the supplied distributor snippets alone. The UFQFPN has 32 terminals plus an exposed pad, and the individual terminal names were not included in the verified data. Before schematic capture, download the STM32F301x6/8 package drawing and pin-definition table, then verify every power, ground, reset, clock, debug, and peripheral connection. Check that the selected land pattern matches 5 x 5 mm dimensions, pad pitch, pin-one orientation, and the exposed-pad geometry rather than relying only on the generic QFN-32 SVG key.
A shared package does not guarantee that an STM32F302 or STM32F303 candidate is a production drop-in replacement. The device identifier, peripheral assignments, interrupt mapping, analog behavior, low-power modes, and firmware initialization can differ even when the core is Cortex-M4 and the package is UFQFPN-32. Compare the official STM32F301, F302, and F303 reference manuals and migration documentation, rebuild the firmware with the exact replacement device support package, and perform peripheral, timing, brownout, and full-temperature regression tests before substitution.
Compliance Information
The supplied search snippets do not explicitly state the target part’s compliance declarations. A third-party comparison page mentions RoHS and REACH, but no authoritative declaration text was provided, so all compliance fields remain unknown.