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STMicroelectronics STM32F051C8U7TR
- Part No.:
- STM32F051C8U7TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
STM32F051C8U7TR.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:2,546
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Product details
Overview
STM32F051C8U7TR from STMicroelectronics is a 32-bit ARM Cortex-M0 microcontroller with 64 KB Flash, 8 KB SRAM, 48 MHz max CPU frequency, 12-bit ADC and DAC, and integrated capacitive touch sensing-designed for cost-sensitive industrial control and smart sensor nodes operating from 2.0–3.6 V.
For engineers reviewing the STM32F051C8U7TR datasheet, STM32F051C8U7TR pinout, STM32F051C8U7TR application, or STM32F051C8U7TR equivalent, key selection criteria include 55 fast I/Os (36 5V-tolerant), dual USARTs with LIN/IrDA support, two I²C interfaces (one Fast Mode Plus), and hardware CRC for firmware integrity in resource-constrained embedded systems.
Technical Context
This MCU integrates an ARM Cortex-M0 core with tightly coupled peripherals including a 16-bit advanced-control timer (TIM1) supporting 6-channel PWM with deadtime generation and emergency stop-critical for motor control. It features dual clock domains: high-speed (HSE/HSI+PLL up to 48 MHz) and low-power (LSE/LSI for RTC and watchdogs).
The analog subsystem includes one 12-bit, 1.0 µs ADC (16-channel, 0–3.6 V range), one 12-bit DAC channel, two programmable analog comparators, and up to 18 capacitive sensing channels-enabling direct integration of touch interfaces without external controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, 48 MHz max - enables real-time deterministic execution for control loops and protocol stacks. |
| Flash / SRAM | 64 KB Flash, 8 KB SRAM with HW parity - supports medium-complexity firmware with runtime data integrity checking. |
| ADC | 12-bit, 1.0 µs conversion, 16-channel - delivers 1 MSPS sampling for sensor signal acquisition with <1 LSB INL. |
| DAC | 12-bit single-channel - provides precise analog output for calibration, biasing, or waveform generation. |
| I/O Count | Up to 55 GPIOs, 36 5V-tolerant - simplifies interface to legacy 5V logic and industrial sensors without level shifters. |
| Timers | 11 timers including TIM1 (advanced-control), TIM2/TIM3 (general-purpose), TIM6 (DAC trigger) - supports motor control, IR decoding, and periodic wakeup from low-power modes. |
| Communication | 2× I²C (1× Fast Mode Plus), 2× USART (LIN/IrDA/ISO7816), 2× SPI (18 Mbit/s, I²S multiplexed) - enables multi-protocol connectivity in automation and HMI applications. |
Pinout & Package
STM32F051C8U7TR uses the UFQFPN48 (7 × 7 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per STM32F051x8 datasheet Section 4 (Pinouts and pin descriptions), validated for this variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Digital power supply / ground | Core and I/O domain at 2.0–3.6 V; requires local decoupling near pins 1/2/47/48. |
| VDDA, VSSA | Analog power supply / ground | Separate 2.4–3.6 V analog rail for ADC/DAC/comp; must be filtered independently. |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/O | 55 total GPIOs; PA0–PA15 and PB0–PB15 support external interrupts and remappable alternate functions. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts 1.65–5.5 V logic; supports external reset button or supervisor IC. |
| BOOT0 | Boot mode selection | High at power-on selects system memory bootloader; tied low via 10 kΩ resistor for normal Flash execution. |
| SWDIO / SWCLK | Serial Wire Debug interface | 2-pin debug port for programming and real-time trace; no JTAG required, minimizing PCB footprint. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware CRC unit | Accelerates firmware image validation and communication checksums without CPU overhead. |
| Capacitive touch sensing (TSC) | Supports up to 18 channels for touchkey, linear, or rotary sensors-eliminates external touch controller ICs. |
| Programmable voltage detector (PVD) | Monitors VDD and triggers interrupt or reset when voltage drops below user-configurable threshold (4 levels). |
| Low-power modes (Stop/Standby) | Consumes ≤1.3 µA in Standby with RTC running on VBAT-enables battery-backed timekeeping for >1 year on CR2032. |
| HDMI CEC interface | Enables consumer electronics remote control interoperability using standard CEC protocol over dedicated pin (PB10). |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Brushless DC motor drive in HVAC blowers or small pumps requiring precise timing and fault protection. IC Role / Device Role / Timing Role: Main controller executing FOC algorithm, generating 6-channel complementary PWM with deadtime, and monitoring current/voltage via ADC. Use Value: TIM1's hardware deadtime insertion and emergency stop input prevent shoot-through; 12-bit ADC enables accurate current sensing at 1 MSPS. | Use Scenario: Battery-powered environmental sensor node measuring temperature, humidity, and air quality with local touch UI. IC Role / Device Role / Timing Role: System-on-chip integrating sensor interface, capacitive touch buttons, low-power RTC, and UART/Bluetooth bridge. Use Value: Integrated TSC reduces BOM count; Stop-mode current ≤1.8 µA extends CR2032 life to >2 years with periodic wakeups. |
| Home Appliance HMI | POS Peripheral Controller |
Use Scenario: Touch-enabled control panel for washing machines or microwaves with LED indicators and buzzer feedback. IC Role / Device Role / Timing Role: Dedicated HMI processor handling capacitive touch scanning, LED PWM dimming, and buzzer tone generation. Use Value: Hardware touch sensing engine offloads CPU; multiple 16-bit timers drive independent LED/buzzer waveforms without software timing jitter. | Use Scenario: Secure peripheral controller for point-of-sale terminals managing magnetic stripe reader, PIN pad, and status LEDs. IC Role / Device Role / Timing Role: Isolated interface controller with ISO7816 UART for secure card communication and GPIO-managed tamper detection. Use Value: USART1's built-in ISO7816 support eliminates external level translators; 96-bit unique ID enables device-level cryptographic binding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F030F4P6 | 32 KB Flash, 4 KB SRAM, no DAC, no capacitive touch, LQFP48 only | Suitable for basic control where analog output or touch UI is unnecessary | Select when BOM cost is primary constraint and feature set can be reduced. |
| STM32G031F8P6 | Newer G0-series, 64 KB Flash, 8 KB SRAM, same pinout (LQFP48), enhanced security, no TSC | Better for secure boot and firmware updates; lacks integrated touch sensing | Choose for new designs requiring PSA Level 1 certification and future-proof toolchain support. |
Compared with STM32F030F4P6, STM32F051C8U7TR adds DAC, TSC, and higher ADC resolution-justifying its use in touch-enabled sensor systems. Versus STM32G031F8P6, it trades modern security features for mature, production-proven touch capability and broader ecosystem support.
Availability
STM32F051C8U7TR is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, home appliance HMIs, and POS peripheral controllers requiring stable component supply across long-lifecycle deployments.
Supply support for STM32F051C8U7TR 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 MEMS sensors with strong automotive and industrial focus.
The STM32F0 series targets cost-optimized, entry-level Cortex-M0 applications-emphasizing analog integration, low-power operation, and ease of migration within the STM32 ecosystem.
FAQ
What is the maximum operating frequency and supply voltage range for STM32F051C8U7TR?
The STM32F051C8U7TR operates at up to 48 MHz using its internal PLL driven by the 8 MHz HSI oscillator or an external 4–32 MHz crystal. Its digital I/O and core supply (VDD) range is 2.0–3.6 V, while the analog supply (VDDA) must be between 2.4 V and 3.6 V and may be tied to VDD if noise is controlled.
Does STM32F051C8U7TR support hardware debugging, and which interface is used?
Yes, it supports Serial Wire Debug (SWD) via dedicated SWDIO and SWCLK pins-requiring only two signals for full programming, breakpoint, and real-time variable inspection. No JTAG header is needed, reducing PCB routing complexity and enabling compact debug probe integration.
How many capacitive touch channels does STM32F051C8U7TR support, and what GPIOs are assigned?
It supports up to 18 capacitive sensing channels using the integrated Touch Sensing Controller (TSC). Valid GPIOs include PA0–PA7, PA10–PA15, PB0–PB1, PB10–PB12, and PC6–PC7-detailed in Table 5 of the datasheet (DocID022265 Rev 7). Channel count depends on selected GPIO configuration and scan mode.
What are the low-power mode current consumption figures for STM32F051C8U7TR?
In Stop mode with RTC active and VDD=3.3 V, typical current is 1.8 µA; in Standby mode with RTC and backup registers powered by VBAT, it drops to 1.3 µA. These values assume all clocks disabled, regulators in low-power state, and no GPIO leakage-verified per Section 6.3.7 of the datasheet under specified conditions.
STM32F051C8U7TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-UFQFN Exposed Pad
- Series:
- STM32F0
- Packaging:
- Tape & Reel (TR)
- 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:
- 39
- Program Memory Size:
- 64KB (64K 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:
STM32F051C8U7TR FAQ
1.How can I place an order for STM32F051C8U7TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F051C8U7TR 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 STM32F051C8U7TR reliable?
The price and inventory of STM32F051C8U7TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F051C8U7TR is usually 5 days.
3.What payment methods are accepted for STM32F051C8U7TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F051C8U7TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F051C8U7TR?
STM32F051C8U7TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F051C8U7TR 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 STM32F051C8U7TR?
For technical support, including STM32F051C8U7TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F051C8U7TR requirements.
6.How does Aetrix verify that STM32F051C8U7TR is sourced from the original manufacturer or authorized distributors?
All STM32F051C8U7TR 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 STM32F051C8U7TR meets industry standards.
7.What is the process for return or replacement of STM32F051C8U7TR?
All STM32F051C8U7TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F051C8U7TR, 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 STM32F051C8U7TR part is unused and in its original packaging.
Return procedure for STM32F051C8U7TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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