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STMicroelectronics STM32F051K6T7
- Part No.:
- STM32F051K6T7
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
STM32F051K6T7.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,060
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Product details
Overview
STM32F051K6T7 from STMicroelectronics is a 32-bit ARM Cortex-M0 microcontroller in UFQFPN32 (5 × 5 mm) package, featuring 32 KB Flash, 8 KB SRAM with hardware parity, 48 MHz max CPU frequency, one 12-bit ADC (1.0 µs conversion), one 12-bit DAC, and dual USARTs with LIN/IrDA support - deployed in industrial sensor nodes and smart metering front-ends.
For engineers reviewing the STM32F051K6T7 datasheet, STM32F051K6T7 pinout, STM32F051K6T7 application, or STM32F051K6T7 equivalent, key selection criteria include 5 V-tolerant I/O count (up to 27), low-power Stop/Standby modes with RTC wakeup, integrated capacitive touch sensing (18 channels), and dual SPI/I2C interfaces with Fast Mode Plus support.
Technical Context
The STM32F051K6T7 implements an ARM Cortex-M0 core with Harvard bus architecture, supporting Thumb-2 instruction set and NVIC with 32 interrupt lines. It integrates a programmable voltage detector (PVD), CRC calculation unit, and system-level peripherals including SysTick, independent/system watchdog timers, and calendar RTC with alarm and periodic wakeup capability.
Clock management includes internal 8 MHz RC (±1% over temperature), 40 kHz LSI for RTC, external 4–32 MHz HSE crystal oscillator, and PLL with x6 multiplication - enabling precise timing control for motor control loops and synchronous serial communication at up to 18 Mbit/s SPI rate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, 48 MHz max - enables real-time deterministic execution of control algorithms with <20 ns instruction cycle time. |
| Flash Memory | 32 KB - sufficient for bootloader + application firmware with OTA update partitioning in resource-constrained edge devices. |
| SRAM | 8 KB with hardware parity - supports safety-critical data buffers and stack integrity verification per IEC 61508 SIL-2 requirements. |
| ADC | 12-bit, 1.0 µs conversion, 16-channel - delivers 12-bit resolution at 1 MSPS for analog sensor acquisition (e.g., current/voltage monitoring). |
| DAC | 12-bit single channel - provides precise analog output for calibration signals or actuator biasing without external DAC IC. |
| I/O Pins | 27 GPIOs, 25 with 5 V tolerance - allows direct interfacing with legacy 5 V logic and industrial sensors without level shifters. |
| Timers | 11 timers including TIM1 (advanced-control, 6-channel PWM + deadtime), TIM2/TIM3 (general-purpose, IR decode capable) - supports BLDC motor commutation and infrared remote decoding. |
Pinout & Package
STM32F051K6T7 uses the UFQFPN32 (5 × 5 mm, 0.5 mm pitch) package - a space-efficient, thermally enhanced solution suitable for compact industrial and consumer PCB layouts with reflow-compatible footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Digital power supply | 2.0–3.6 V main supply; decoupling required per STM32 layout guidelines to ensure stable core operation. |
| VDDA | Analog power supply | 2.4–3.6 V dedicated analog rail; must be filtered separately to maintain ADC/DAC accuracy and noise immunity. |
| PA0–PA15 | General-purpose I/O | 16 pins with alternate functions (USART1_TX, SPI1_SCK, etc.); PA0–PA7 support capacitive touch sensing. |
| PB0–PB11 | General-purpose I/O | 12 pins; PB6/PB7 support I2C1, PB10/PB11 support USART1, PB12–PB15 reserved for system functions. |
| NRST | Active-low reset input | Externally driven reset signal; internal pull-up ensures reliable boot after power-on or brownout recovery. |
| BOOT0 | Boot mode selection | High at reset enables system memory bootloader; tied low for normal Flash execution - critical for field firmware recovery. |
| SWDIO/SWCLK | Debug interface | Two-pin Serial Wire Debug (SWD) port - enables non-intrusive programming and real-time trace without JTAG overhead. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive Touch Sensing | 18-channel TSC supporting touchkey, linear, and rotary sensors - eliminates mechanical buttons and reduces BOM cost in HMI applications. |
| Low-Power Modes | Sleep, Stop, Standby with RTC wakeup - achieves <1.3 µA Standby current (VBAT only), extending battery life in wireless sensor nodes. |
| Communication Interfaces | 2× I2C (one Fast Mode Plus), 2× USART (LIN/IrDA), 2× SPI (18 Mbit/s) - enables multi-protocol connectivity to displays, EEPROMs, and transceivers in single-chip designs. |
| Analog Peripherals | 12-bit ADC + 12-bit DAC + 2× comparators - supports closed-loop analog control (e.g., temperature regulation) without external signal conditioning ICs. |
| Security & Reliability | 96-bit unique ID, CRC unit, SRAM parity checking - enables device authentication and memory integrity validation for secure firmware updates. |
Applications
| Industrial Sensor Node | Smart Energy Meter |
|---|---|
Use Scenario: Compact, battery-powered environmental monitor measuring temperature, humidity, and air quality via analog and digital sensors. IC Role / Device Role / Timing Role: Central controller executing sensor fusion, local decision logic, and BLE/Wi-Fi gateway interface; RTC schedules periodic wakeups for low-duty-cycle sampling. Use Value: Integrated 12-bit ADC and 5 V-tolerant I/O eliminate external signal conditioning; ultra-low Standby current (<1.3 µA) extends 10-year battery life. | Use Scenario: Residential electricity meter with tariff switching, tamper detection, and optical/IR communication to utility handheld readers. IC Role / Device Role / Timing Role: Main metrology controller managing pulse counting, LCD display, IrDA/ISO7816 communication, and secure time-stamped logging. Use Value: Dual USART with IrDA and ISO7816 support enables direct utility interface; built-in RTC with alarm ensures accurate billing intervals and event timestamping. |
| Motor Control Module | Human-Machine Interface (HMI) |
Use Scenario: Low-voltage DC fan or pump controller using sensorless BLDC commutation and thermal protection feedback. IC Role / Device Role / Timing Role: Real-time motor driver managing six-step PWM generation, current sensing, and emergency stop via TIM1 advanced timer with deadtime insertion. Use Value: Hardware deadtime generation prevents shoot-through in half-bridge drivers; 12-bit DAC provides precise reference for current sense amplifier offset calibration. | Use Scenario: Appliance control panel with touch sliders, LED indicators, and buzzer feedback for oven, washing machine, or HVAC systems. IC Role / Device Role / Timing Role: Capacitive touch controller and UI coordinator handling touch detection, LED dimming via PWM, and audio tone generation via DAC. Use Value: On-chip TSC supports up to 18 electrodes - replaces discrete touch ICs; 27 GPIOs drive LEDs, buzzers, and status indicators without external expanders. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F030F4P6 | 16 KB Flash, no DAC, no capacitive touch, 16 MHz max CPU - lower integration and performance. | Suitable for basic GPIO/UART control where analog features are unnecessary. | Select when cost sensitivity outweighs need for DAC, ADC speed, or touch capability. |
| STM32F070F6P6 | 32 KB Flash, no DAC, no capacitive touch, but adds USB 2.0 FS device interface. | Better fit for PC-connected peripherals requiring HID or CDC class enumeration. | Choose when USB connectivity is mandatory and touch/precision analog are secondary. |
Compared with STM32F030F4P6 and STM32F070F6P6, the STM32F051K6T7 uniquely combines 32 KB Flash, 12-bit DAC, 12-bit ADC, and capacitive touch in a 32-pin package - making it optimal for cost-sensitive, analog-rich embedded systems where USB is not required.
Availability
STM32F051K6T7 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, motor control modules, and human-machine interfaces requiring stable component supply across long-lifecycle production programs.
Supply support for STM32F051K6T7 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, MEMS, and automotive-grade components since 1987.
The STM32F0 series targets cost-sensitive, low-power embedded applications - delivering Cortex-M0 performance with rich analog integration and industrial-grade reliability for industrial automation, appliance control, and IoT edge devices.
FAQ
What is the maximum operating temperature range for STM32F051K6T7?
The STM32F051K6T7 is qualified for industrial temperature range: –40 °C to +85 °C. Its thermal characteristics (θJA = 190 °C/W in UFQFPN32) require minimum 2 cm² copper pour under the exposed pad for sustained 48 MHz operation at 85 °C ambient.
Does STM32F051K6T7 support hardware encryption or secure boot?
No. The STM32F051K6T7 does not include hardware cryptographic accelerators or secure boot ROM. It relies on software-based AES libraries and external secure elements for confidentiality; its 96-bit unique ID supports device binding but not encrypted key storage.
Can the internal 12-bit DAC drive a load directly?
Yes, but with limitations: the DAC output drives up to 50 µA load while maintaining monotonicity and linearity. For higher-current loads (e.g., op-amp inputs), an external buffer is required - the datasheet specifies 15 kΩ min load resistance for full-scale output compliance.
Is SWD debug supported on all pins, or only dedicated SWDIO/SWCLK?
SWD debug requires only two dedicated pins: PA13 (SWDIO) and PA14 (SWCLK). These pins are fixed-function for debug and cannot be remapped. No other GPIOs support SWD functionality - alternate functions on these pins are disabled when SWD is active.
STM32F051K6T7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 32-LQFP
- Series:
- STM32F0
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0
- Core Size:
- 32-Bit Single-Core
- Speed:
- 48MHz
- Connectivity:
- HDMI-CEC, I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 25
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 13x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F051K6T7 FAQ
1.How can I place an order for STM32F051K6T7 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F051K6T7 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 STM32F051K6T7 reliable?
The price and inventory of STM32F051K6T7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F051K6T7 is usually 5 days.
3.What payment methods are accepted for STM32F051K6T7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F051K6T7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F051K6T7?
STM32F051K6T7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F051K6T7 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 STM32F051K6T7?
For technical support, including STM32F051K6T7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F051K6T7 requirements.
6.How does Aetrix verify that STM32F051K6T7 is sourced from the original manufacturer or authorized distributors?
All STM32F051K6T7 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 STM32F051K6T7 meets industry standards.
7.What is the process for return or replacement of STM32F051K6T7?
All STM32F051K6T7 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F051K6T7, 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 STM32F051K6T7 part is unused and in its original packaging.
Return procedure for STM32F051K6T7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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