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STMicroelectronics STM32F051C4T6TR
- Part No.:
- STM32F051C4T6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32F051C4T6TR.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,805
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Product details
Overview
STM32F051C4T6TR from STMicroelectronics is a 32-bit ARM Cortex-M0 microcontroller with 16 KB Flash, 8 KB SRAM, 48 MHz max CPU frequency, 12-bit ADC (1.0 µs conversion), and single 12-bit DAC-designed for cost-sensitive industrial control and sensor interface applications requiring low-power operation and integrated analog peripherals.
For engineers reviewing the STM32F051C4T6TR datasheet, STM32F051C4T6TR pinout, STM32F051C4T6TR application, or STM32F051C4T6TR equivalent, key selection criteria include Flash/SRAM size, 5 V-tolerant I/O count (up to 36), RTC with alarm, capacitive touch support (18 channels), and dual USART/I²C/SPI interfaces with hardware flow control and wakeup capability.
Technical Context
The STM32F051C4T6TR integrates an ARM Cortex-M0 core with Harvard bus architecture, supporting Thumb-2 instruction set and NVIC with 32 interrupt vectors. It features a dedicated 16-bit advanced-control timer (TIM1) with 6-channel PWM, deadtime generation, and emergency stop-enabling precise motor control in BLDC or stepper drive stages.
Clock management includes dual oscillators: 4–32 MHz HSE for system timing and 32 kHz LSE for RTC calibration, plus internal 8 MHz HSI (±1% at 25°C) with x6 PLL for stable 48 MHz operation. Analog subsystem comprises one 12-bit ADC (16-channel, 0–3.6 V range), one 12-bit DAC, two programmable comparators, and TSC for touchkey/rotary sensing-all sharing a common VDDA supply (2.4–3.6 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, 48 MHz max - enables real-time deterministic execution of control loops with <200 ns interrupt latency. |
| Memory | 16 KB Flash + 8 KB SRAM with HW parity - supports secure firmware storage and robust data buffering for sensor fusion tasks. |
| Analog Peripherals | 1×12-bit ADC (16 ch, 1.0 µs), 1×12-bit DAC, 2×comparators - allows simultaneous voltage monitoring, actuator control, and threshold-triggered event generation. |
| Timers | 11 timers including TIM1 (advanced-control), TIM2/TIM3 (general-purpose), TIM6 (DAC trigger), and SysTick - provides flexible PWM, capture/compare, IR decoding, and periodic interrupt scheduling. |
| I/O & Interfaces | 39 GPIOs (36 with 5 V tolerance), 2×USART (LIN/IrDA/ISO7816), 2×I²C (1×Fast Mode Plus), 2×SPI (18 Mbit/s, I²S-mux) - enables direct connection to UART sensors, SMBus power monitors, and audio codecs without level shifters. |
| Power Management | VDD = 2.0–3.6 V, VDDA = 2.4–3.6 V, PVD, Sleep/Stop/Standby modes - supports battery-backed RTC operation and sub-µA standby current for portable instrumentation. |
| Package | LQFP48 (7 × 7 mm, 0.5 mm pitch) - compatible with standard PCB assembly processes and offers full pin access for debugging and peripheral expansion. |
Pinout & Package
LQFP48 package (7 × 7 mm, 0.5 mm pitch), RoHS-compliant ECOPACK®2, with exposed thermal pad (not electrically connected). Pin count: 48 terminals, including 39 GPIOs, 5 power/ground, 2 reset/debug, and 2 crystal connections.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VSS, VSSA | Power supply rails | Digital (VDD/VSS) and analog (VDDA/VSSA) domains must be decoupled separately; VDDA ≥ 2.4 V required for ADC/DAC accuracy. |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/O | 39 total GPIOs; PA0–PA15 and PB0–PB15 support external interrupts and alternate functions (USART, SPI, I²C, timers). |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts 1.65–5.5 V logic levels-compatible with 3.3 V and 5 V systems. |
| BOOT0 | Boot mode selection | High at power-up selects system memory bootloader; tied low via 10 kΩ resistor for normal Flash execution. |
| OSC_IN / OSC_OUT | HSE crystal oscillator interface | Supports 4–32 MHz quartz; requires external 12–22 pF load capacitors-critical for USB-free clock accuracy in communication applications. |
| SWDIO / SWCLK | Serial Wire Debug interface | Two-pin debug port enabling full SWD programming and real-time trace without JTAG overhead-reduces PCB footprint vs. traditional debug headers. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive Touch Sensing (TSC) | 18-channel controller supporting touchkey, linear slider, and rotary encoder-eliminates external touch ICs in HMI panels and appliance controls. |
| Hardware CRC Unit | Dedicated 32-bit CRC calculator compliant with IEEE-802.3 - accelerates firmware integrity checks and OTA update validation without CPU load. |
| Programmable Voltage Detector (PVD) | Configurable trip points (2.0–2.9 V in 0.1 V steps) - triggers interrupt or reset on brown-out, enabling graceful shutdown in battery-powered devices. |
| RTC with Calendar & Alarm | Full binary-coded decimal (BCD) calendar, alarm interrupt, and periodic wakeup from Stop/Standby - sustains timekeeping during ultra-low-power sleep with <1 µA VBAT current. |
| 5-Channel DMA Controller | Supports memory-to-memory, peripheral-to-memory, and memory-to-peripheral transfers - offloads ADC sampling, SPI streaming, and DAC waveform generation from CPU. |
Applications
| Industrial Sensor Node | Smart Appliance Control |
|---|---|
Use Scenario: Compact environmental monitor measuring temperature, humidity, and CO₂ using analog and digital sensors. IC Role / Device Role / Timing Role: Central MCU executing sensor fusion, local decision logic, and UART-based telemetry to gateway. Use Value: Integrated 12-bit ADC and 5 V-tolerant I/O eliminate signal conditioning circuitry; RTC enables timestamped logging without external time source. | Use Scenario: Washing machine main control board managing motor drive, water valve, display, and user interface. IC Role / Device Role / Timing Role: System-on-chip controller coordinating PWM motor control (via TIM1), capacitive touch panel (TSC), and serial communication with display module. Use Value: Advanced timer with deadtime prevents shoot-through in half-bridge drivers; TSC replaces mechanical buttons, reducing BOM and improving IP rating. |
| Energy Meter Interface | POS Terminal Peripheral |
Use Scenario: Sub-metering unit interfacing with shunt-based current sensors and optical pulse output from utility meters. IC Role / Device Role / Timing Role: Signal conditioner and protocol translator converting analog voltage to calibrated kWh values and transmitting via RS-485 (USART-driven). Use Value: 12-bit ADC with internal reference ensures ±1% measurement linearity; hardware parity on SRAM prevents data corruption in long-term logging. | Use Scenario: Magnetic stripe reader module in retail POS terminal requiring ISO7816-compatible smart card interface and ESD-hardened I/O. IC Role / Device Role / Timing Role: Secure peripheral controller handling card power management, clock generation, and contactless command parsing via USART with ISO7816 mode. Use Value: Dedicated ISO7816 USART eliminates external level translators; 5 V-tolerant pins withstand ESD events up to ±4 kV (HBM) per IEC 61000-4-2. |
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, 4 KB SRAM, no DAC, no TSC, fewer timers (7), LQFP48 | Lacks analog output and touch capability; suitable only for pure digital control or basic sensor readout. | Select when DAC/TSC are unnecessary and cost is primary constraint-requires external DAC for analog actuation. |
| STM32F070F6P6 | 16 KB Flash, 6 KB SRAM, no TSC, 1×12-bit ADC (10 ch), 1×USART, 1×I²C, 1×SPI, LQFP48 | Missing capacitive sensing and second USART; lower peripheral integration reduces HMI flexibility. | Choose for simpler communication-centric designs where touch interface is omitted and single UART suffices. |
Compared with STM32F051C4T6TR, STM32F030F4P6 sacrifices DAC and TSC for lower cost but loses analog output and touch capability; STM32F070F6P6 retains ADC and communication interfaces but omits TSC and second USART-making it less suitable for multi-interface HMI or dual-sensor systems.
Availability
STM32F051C4T6TR is available at Aetrix Electronics and suitable for industrial sensor nodes, smart appliance control, energy meter interfaces, and POS terminal peripherals requiring stable component supply, long-lifecycle assurance, and ECOPACK®2 compliance.
Supply support for STM32F051C4T6TR 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, delivering silicon solutions across automotive, industrial, and consumer markets since 1987.
The STM32F0 series targets cost-optimized, entry-level embedded applications-emphasizing low-power operation, integrated analog peripherals, and ease of migration within the STM32 ecosystem.
FAQ
What is the maximum operating frequency and supported voltage range?
The STM32F051C4T6TR operates at up to 48 MHz using its internal 8 MHz HSI oscillator with PLL, or external 4–32 MHz crystal. Its digital supply (VDD) ranges from 2.0 V to 3.6 V, while analog supply (VDDA) must be between 2.4 V and 3.6 V for guaranteed ADC/DAC performance. Operation below 2.4 V on VDDA degrades analog accuracy and may disable certain analog features.
Does this MCU support USB or CAN interfaces?
No, the STM32F051C4T6TR does not integrate USB or CAN peripherals. It provides two USARTs (one with ISO7816/LIN/IrDA), two I²C interfaces (one Fast Mode Plus), and two SPIs (one with I²S multiplexing). For USB connectivity, designers must use external PHY or select higher-series STM32 parts like F072 or G0 series; CAN requires external transceiver or migration to F042/F072 variants.
How many I/O pins are 5 V tolerant, and what is their safe operating margin?
Up to 36 GPIOs on the STM32F051C4T6TR are 5 V tolerant when configured as inputs or outputs in push-pull mode. These pins accept voltages up to 5.5 V regardless of VDD level (2.0–3.6 V), making them compatible with legacy 5 V logic and sensors. However, 5 V tolerance applies only when VDD ≥ 2.0 V; operation with VDD < 2.0 V invalidates this rating per datasheet Section 6.3.14.
What debug interface is supported, and what tools are required?
The STM32F051C4T6TR supports Serial Wire Debug (SWD) via dedicated SWDIO and SWCLK pins-requiring only two wires for full programming, debugging, and real-time tracing. Compatible tools include ST-LINK/V2-1 (on Nucleo boards), SEGGER J-Link, and CMSIS-DAP adapters. No JTAG header is needed, reducing PCB space and simplifying bring-up compared to legacy debug methods.
STM32F051C4T6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- 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:
- 16KB (16K 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F051C4T6TR FAQ
1.How can I place an order for STM32F051C4T6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F051C4T6TR 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 STM32F051C4T6TR reliable?
The price and inventory of STM32F051C4T6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F051C4T6TR is usually 5 days.
3.What payment methods are accepted for STM32F051C4T6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F051C4T6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F051C4T6TR?
STM32F051C4T6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F051C4T6TR 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 STM32F051C4T6TR?
For technical support, including STM32F051C4T6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F051C4T6TR requirements.
6.How does Aetrix verify that STM32F051C4T6TR is sourced from the original manufacturer or authorized distributors?
All STM32F051C4T6TR 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 STM32F051C4T6TR meets industry standards.
7.What is the process for return or replacement of STM32F051C4T6TR?
All STM32F051C4T6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F051C4T6TR, 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 STM32F051C4T6TR part is unused and in its original packaging.
Return procedure for STM32F051C4T6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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