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STMicroelectronics STM32F301K8U7TR
- Part No.:
- STM32F301K8U7TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-UFQFN Exposed Pad
- Datasheet:
-
STM32F301K8U7TR.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 32UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:1,380
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Product details
Overview
STM32F301K8U7TR 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, rail-to-rail comparators, and a programmable-gain operational amplifier. It operates from 2.0–3.6 V, supports up to 72 MHz CPU frequency, and targets sensor signal conditioning, motor control, and capacitive touch applications in industrial and consumer systems.
For engineers reviewing the STM32F301K8U7TR datasheet, STM32F301K8U7TR pinout, STM32F301K8U7TR application, or STM32F301K8U7TR equivalent, key selection criteria include its 32-pin UFQFPN package, 15-channel 12-bit ADC with 0.20 μs conversion time, single 12-bit DAC channel, three ultra-fast comparators, and embedded op-amp usable in PGA mode with full terminal access.
Technical Context
The device integrates an Arm Cortex-M4 core with hardware floating-point unit and DSP instructions, enabling real-time signal processing for mixed-signal control loops. Its interconnect matrix enables concurrent peripheral access without bus contention, while the 7-channel DMA controller offloads data movement for ADC, DAC, SPI, I²C, and USART transfers.
Analog subsystem integration includes independent analog supplies (VDDA 2.4–3.6 V for DAC/op-amp; 2.0–3.6 V for ADC/COMP), configurable resolution ADC (6/8/10/12 bits), and temperature sensor with ±1.5°C accuracy over –40 to +85°C. The op-amp supports non-inverting, inverting, and PGA configurations with gain up to 32×.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 72 MHz max - enables real-time DSP operations and floating-point math without software emulation. |
| Flash / SRAM | 64 KB Flash, 16 KB SRAM - sufficient for complex control algorithms with firmware update capability and local data buffering. |
| ADC | 1 × 12-bit, 15-channel, 0.20 μs conversion - supports high-speed sampling of multiple sensors or motor phase currents. |
| DAC | 1 × 12-bit, rail-to-rail output - provides precise analog waveform generation or reference voltage control. |
| Op-Amp | 1 × rail-to-rail, PGA-capable, full terminal access - allows configurable gain (1–32×) for sensor front-end amplification without external components. |
| Comparators | 3 × ultra-fast, 2.0–3.6 V supply range - enables fast overvoltage/undervoltage detection and zero-crossing sensing. |
| Package | UFQFPN32 (5 × 5 mm, 0.5 mm pitch) - compact footprint suitable for space-constrained industrial and portable designs. |
Pinout & Package
STM32F301K8U7TR uses the UFQFPN32 (5 × 5 mm) package with 32 pins, optimized for thermal performance and PCB area efficiency in cost-sensitive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains: VDD powers digital logic; separate VDDA required for analog peripherals to minimize noise coupling. |
| VREF+, VREF– | Analog reference inputs | Enable external precision reference for ADC/DAC; internal 1.2 V VREFINT available as alternative. |
| PA0–PA15, PB0–PB15, PF0–PF1 | General-purpose I/O | Up to 51 GPIOs; all mappable to external interrupts; several support 5 V tolerance for mixed-voltage interfacing. |
| PA1, PA4, PA5, PA6, PA7, PB0, PB1 | Analog input channels | Direct connection to 12-bit ADC; support single-ended/differential modes and selectable resolution. |
| PA4 | DAC output | Direct 12-bit DAC output with rail-to-rail swing; requires external buffer if driving low-impedance loads. |
| PA1, PA5, PA6, PA7, PB0, PB1 | Comparator inputs | Support fast comparison with programmable hysteresis; outputs feed directly to timers or NVIC for event-triggered response. |
| PA0, PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1 | Op-amp terminals | Full access to non-inverting/inverting inputs and output; supports PGA configuration with internal resistors. |
Key Features
| Feature | Design Value |
|---|---|
| Embedded op-amp in PGA mode | Configurable gain (1–32×) using internal resistor network - eliminates need for external gain-setting components in sensor signal chains. |
| Capacitive sensing controller (TSC) | Up to 18 channels supporting touchkey, linear, and rotary sensors - enables robust human-machine interface without dedicated ASIC. |
| Ultra-fast comparators | Propagation delay < 60 ns at 2.0–3.6 V - suitable for overcurrent protection and fast feedback in motor gate drivers. |
| Temperature sensor | Calibrated ±1.5°C accuracy from –40 to +85°C - enables system thermal monitoring without external sensor. |
| Low-power modes | Sleep, Stop, Standby with VBAT backup for RTC - achieves sub-1 μA standby current for battery-powered applications. |
Applications
| Motor Control | Sensor Signal Conditioning |
|---|---|
Use Scenario: Brushless DC (BLDC) motor commutation with current sensing and PWM timing. IC Role / Device Role / Timing Role: MCU executes FOC algorithm, reads phase currents via ADC, generates synchronized PWM on advanced timer (TIM1), and monitors overcurrent via comparators. Use Value: Integrated op-amp amplifies shunt voltage; comparators trigger emergency stop within 60 ns; 72 MHz core handles real-time loop updates at 20 kHz. | Use Scenario: Industrial pressure/temperature transducer interface with analog front-end and digital output. IC Role / Device Role / Timing Role: ADC digitizes conditioned sensor output; DAC generates calibration reference; op-amp implements programmable gain stage. Use Value: Single-chip solution replaces discrete op-amp + ADC + MCU; 12-bit ADC resolution supports 0.1% measurement accuracy; PGA eliminates manual gain-switching. |
| Capacitive Touch Interface | Power Supply Monitoring |
Use Scenario: Appliance control panel with waterproof touchkeys and slider controls. IC Role / Device Role / Timing Role: TSC scans up to 18 electrodes; GPIOs drive LED feedback; timers manage scan timing and debouncing. Use Value: Hardware-accelerated touch sensing reduces CPU load by >90%; built-in hysteresis and noise filtering enable reliable operation in EMI-heavy environments. | Use Scenario: Real-time monitoring of 3.3 V rail integrity in medical diagnostic equipment. IC Role / Device Role / Timing Role: Comparator monitors VDD against internal reference; triggers interrupt on undervoltage; RTC logs event timestamp. Use Value: Sub-60 ns comparator response ensures immediate shutdown before brownout affects logic; VBAT-backed RTC preserves fault log across power cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F302K8U7TR | Includes CCM RAM (8 KB), higher ADC throughput (2.4 MSPS vs. 5 MSPS), no DAC | Better for compute-intensive control loops; lacks DAC for analog output generation | Select when prioritizing processing headroom over analog output capability |
| STM32F072K8U7TR | Cortex-M0 core, 48 MHz, 64 KB Flash, 8 KB SRAM, no op-amp or comparators | Limited analog integration; suited for simpler digital control only | Select for cost-sensitive, low-complexity applications where analog front-end is external |
Compared with STM32F302K8U7TR, this part trades CCM RAM and higher ADC speed for integrated DAC and op-amp-making it superior for closed-loop analog control. Versus STM32F072K8U7TR, it delivers significantly richer analog signal chain capability at modest cost premium.
Availability
STM32F301K8U7TR is available at Aetrix Electronics and suitable for motor control, capacitive touch interfaces, sensor signal conditioning, and power supply monitoring requiring stable component supply across production lifecycles.
Supply support for STM32F301K8U7TR 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, analog, and MEMS technologies.
This device belongs to the STM32F3 series, designed specifically for cost-effective, analog-rich embedded control applications demanding high-precision signal acquisition and real-time processing in industrial and consumer equipment.
FAQ
What is the maximum operating frequency and supported voltage range?
The STM32F301K8U7TR operates at up to 72 MHz CPU frequency with a supply voltage range of 2.0–3.6 V for VDD and VDDA. VDDA must be ≥2.4 V for DAC and op-amp operation, and ≥2.0 V for ADC and comparators. All specifications are guaranteed across the full industrial temperature range (–40 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 capacitive sensing channels. It provides hardware-based electrode scanning, charge transfer measurement, and built-in noise filtering, enabling robust touchkey, linear, and rotary sensor implementations without external components or significant CPU overhead.
Can the op-amp be used independently of the ADC or DAC?
Yes-the op-amp has fully accessible terminals (non-inverting input, inverting input, output) and supports standalone configurations including non-inverting amplifier, inverting amplifier, and programmable-gain amplifier (PGA) using internal resistor networks. It does not require ADC or DAC activation to function and can drive external loads directly.
What debug interfaces are supported and what packaging is used?
The device supports Serial Wire Debug (SWD) and JTAG via dedicated SWCLK, SWDIO, and NRST pins. It is supplied in the UFQFPN32 package (5 × 5 mm, 0.5 mm pitch), with exposed thermal pad for enhanced heat dissipation. Pin layout and debug signal assignments are documented in Section 4 ("Pinouts and pin description") of DS9895 Rev 8.
STM32F301K8U7TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 32-UFQFN Exposed Pad
- Series:
- STM32F3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 72MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 24
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 11x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F301K8U7TR FAQ
1.How can I place an order for STM32F301K8U7TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F301K8U7TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM32F301K8U7TR reliable?
The price and inventory of STM32F301K8U7TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F301K8U7TR is usually 5 days.
3.What payment methods are accepted for STM32F301K8U7TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F301K8U7TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F301K8U7TR?
STM32F301K8U7TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F301K8U7TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM32F301K8U7TR?
For technical support, including STM32F301K8U7TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F301K8U7TR requirements.
6.How does Aetrix verify that STM32F301K8U7TR is sourced from the original manufacturer or authorized distributors?
All STM32F301K8U7TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32F301K8U7TR meets industry standards.
7.What is the process for return or replacement of STM32F301K8U7TR?
All STM32F301K8U7TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F301K8U7TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM32F301K8U7TR part is unused and in its original packaging.
Return procedure for STM32F301K8U7TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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