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STMicroelectronics STM32F051R8T7TR
- Part No.:
- STM32F051R8T7TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32F051R8T7TR.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:945
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Product details
Overview
STM32F051R8T7TR from STMicroelectronics is a 32-bit ARM Cortex-M0 microcontroller in LQFP64 package, featuring 64 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 IrDA/LIN support. It targets cost-sensitive industrial control and smart sensor nodes requiring integrated analog peripherals and low-power operation.
For engineers reviewing the STM32F051R8T7TR datasheet, STM32F051R8T7TR pinout, STM32F051R8T7TR application, or STM32F051R8T7TR equivalent, key selection factors include its 64-pin LQFP package with 55 fast I/Os (36 5V-tolerant), 11 timers including advanced-control TIM1 with deadtime generation, RTC with alarm, and dual I2C interfaces - one supporting Fast Mode Plus (1 Mbit/s) and SMBus/PMBus.
Technical Context
The STM32F051R8T7TR implements an ARM Cortex-M0 core with Harvard bus architecture, tightly coupled NVIC and SysTick timer, and supports boot from system memory, main Flash, or SRAM. Its clock tree integrates four oscillators: 4–32 MHz HSE, 32 kHz LSE for RTC, 8 MHz HSI with x6 PLL, and 40 kHz LSI for watchdogs.
Analog subsystem includes a single 12-bit ADC with 16-channel multiplexing, dedicated VDDA supply (2.4–3.6 V), internal temperature sensor and VREFINT, plus one 12-bit DAC channel driven by TIM6. Digital peripherals feature two I2C (one Fast Mode Plus), two USARTs (one with ISO7816, LIN, IrDA), two SPI/I2S, HDMI CEC, and serial wire debug (SWD).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, 32-bit RISC, up to 48 MHz - enables deterministic real-time control with Thumb-2 instruction set and <100 ns interrupt latency. |
| Memory | 64 KB Flash (read-while-write, 20 kcycles endurance), 8 KB SRAM with hardware parity - supports robust firmware updates and data integrity in safety-critical tasks. |
| ADC | 12-bit, 1.0 µs conversion time, 16-channel input, 0–3.6 V range - delivers high-resolution sensing for motor current, battery voltage, or environmental monitoring. |
| DAC | 12-bit, monotonic output, buffered voltage mode - suitable for precision analog waveform generation or programmable biasing in sensor signal conditioning. |
| Timers | 11 timers including TIM1 (16-bit, 7-channel PWM + deadtime + emergency stop), TIM2/3/14–17, and TIM6 (DAC trigger) - enables complex motor control, IR modulation, and precise timing sequences. |
| I/O Capability | Up to 55 fast I/Os, 36 with 5 V tolerance, all mappable to external interrupts - simplifies interface to legacy 5 V logic, industrial sensors, and HMI components without level shifters. |
| Power Range | 2.0–3.6 V digital/analog supply, VDDA ≥ VDD, POR/PDR + PVD - ensures stable operation across wide input rails and enables brown-out detection for graceful shutdown. |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad - optimized for manual soldering, thermal dissipation in compact industrial modules, and compatibility with standard PCB assembly processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Digital power supply and ground | Primary 2.0–3.6 V domain; requires local 100 nF decoupling per pair to suppress switching noise. |
| VDDA, VSSA | Analog power and ground | Independent 2.4–3.6 V supply for ADC/DAC/comp; must be filtered and separated from digital ground to maintain 12-bit linearity. |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/Os | 55 total GPIOs; up to 36 tolerate 5 V inputs - allows direct interfacing with industrial sensors and legacy peripherals. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts 1.65–5.5 V logic - compatible with external push-button or supervisor ICs. |
| BOOT0 | Boot mode selection | High at power-up selects system memory boot (for bootloader execution); tied low via 10 kΩ resistor for normal Flash boot. |
| SWDIO / SWCLK | Serial Wire Debug interface | Two-pin debug port supporting full programming, breakpoint, and real-time trace - eliminates need for JTAG header space. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware CRC unit | 32-bit polynomial calculation engine - accelerates firmware integrity checks and communication frame validation without CPU overhead. |
| Capacitive sensing controller (TSC) | Up to 18 channels supporting touchkey, linear, and rotary sensors - enables robust, low-cost HMI implementation with built-in noise immunity and auto-calibration. |
| Low-power modes | Sleep (CPU off, peripherals active), Stop (1.3 µA typical), Standby (0.5 µA) - extends battery life in portable instrumentation and wireless sensor endpoints. |
| Advanced-control timer (TIM1) | 16-bit, 7-channel PWM with programmable deadtime, complementary outputs, and emergency stop - directly drives 3-phase BLDC motors or half-bridge inverters. |
| RTC with calendar and alarm | 32.768 kHz LSE-backed real-time clock with timestamped alarms and periodic wakeup from Stop/Standby - enables scheduled sensor sampling and energy-aware scheduling. |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Compact BLDC motor driver for HVAC blowers or small pumps using single-shunt current sensing and field-oriented control. IC Role / Device Role / Timing Role: Main controller executing FOC algorithm, generating 6-channel PWM with deadtime, sampling ADC at 10 kHz, and managing thermal protection via internal temperature sensor. Use Value: Integrated TIM1 deadtime generator and 12-bit ADC eliminate external gate drivers and precision op-amps, reducing BOM count by 4 components. | Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and CO₂ with wireless telemetry via UART-to-LoRa bridge. IC Role / Device Role / Timing Role: System-on-chip managing sensor polling, data fusion, low-power sleep scheduling, and UART-based packet framing for sub-GHz radio. Use Value: Standby current of 0.5 µA and RTC-triggered wakeups enable >5-year battery life on CR2032, while 5 V-tolerant I/Os simplify connection to analog sensor outputs. |
| POS Terminal Interface | Home Appliance Control Panel |
Use Scenario: Secure payment terminal front-end handling keypad scan, display backlight PWM, magnetic stripe reader decoding, and USB CDC communication. IC Role / Device Role / Timing Role: Peripheral coordinator using USART1 (ISO7816), TIM16/TIM17 for IR pulse decoding, and GPIO-mapped matrix keypad scanner. Use Value: Dual USARTs with LIN/IrDA support replace discrete UART transceivers; hardware parity on SRAM prevents corruption during ESD events near card readers. | Use Scenario: Washing machine main control board managing water valve sequencing, heater control, drum motor commutation, and LED status indicators. IC Role / Device Role / Timing Role: Real-time sequencer using TIM2/TIM3 for precise solenoid timing, ADC for NTC thermistor reading, and DAC for analog heater reference voltage. Use Value: Single-chip integration of 12-bit DAC and 12-bit ADC eliminates external DAC and reduces analog front-end component count by 30% versus 8-bit MCU alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F072RBT6 | 64 KB Flash, 16 KB SRAM, USB 2.0 FS device, no DAC, higher peripheral count (USB, additional timers) | Requires USB connectivity (e.g., HID keyboard emulation); lacks integrated DAC for analog reference generation | Select when USB host/device capability is mandatory and DAC is not required. |
| STM32G031K8T6 | 64 KB Flash, 8 KB SRAM, same Cortex-M0+, enhanced security (AES, secure boot), no TSC, no HDMI CEC | Targets secure firmware updates and tamper-resistant designs; excludes capacitive touch and consumer electronics control features | Choose for IoT edge nodes needing cryptographic acceleration and secure boot, where touch interface is unnecessary. |
Compared with STM32F051R8T7TR, STM32F072RBT6 adds USB but removes DAC and TSC, making it unsuitable for analog-output or touch-based HMI; STM32G031K8T6 improves security and power efficiency but omits HDMI CEC and capacitive sensing, limiting use in consumer appliance remotes or CE devices.
Availability
STM32F051R8T7TR is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, POS terminal interfaces, and home appliance control panels requiring stable component supply and long-term production support.
Supply support for STM32F051R8T7TR 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 semiconductors since 1987.
The STM32F0 series targets cost-sensitive, resource-constrained embedded applications requiring ARM Cortex-M0 performance, integrated analog peripherals, and industrial-grade reliability - especially in white goods, industrial automation, and smart metering.
FAQ
What is the maximum operating frequency and voltage range for STM32F051R8T7TR?
The STM32F051R8T7TR operates at up to 48 MHz CPU frequency with a digital supply voltage range of 2.0 V to 3.6 V and an analog supply (VDDA) from VDD to 3.6 V. It includes a programmable voltage detector (PVD) for configurable brown-out detection and supports multiple low-power modes including Stop (1.3 µA typical) and Standby (0.5 µA).
Does STM32F051R8T7TR support hardware debugging, and what interface is used?
Yes, the STM32F051R8T7TR supports Serial Wire Debug (SWD) via dedicated SWDIO and SWCLK pins - a 2-pin interface enabling full programming, real-time variable inspection, and breakpoint debugging without requiring JTAG's 5-pin footprint. It is compatible with ST-LINK/V2 and third-party SWD debug probes.
How many analog-to-digital converter (ADC) channels does this MCU provide, and what is its resolution?
The STM32F051R8T7TR integrates one 12-bit ADC with up to 16 input channels, 1.0 µs conversion time, and a full-scale range of 0 to 3.6 V. It supports hardware oversampling, injected channel sequencing, and uses a dedicated VDDA supply (2.4–3.6 V) to ensure accuracy independent of digital noise.
Is the STM32F051R8T7TR pin-compatible with other members of the STM32F051xx family?
Yes, the STM32F051R8T7TR in LQFP64 package shares identical pinout with other R8 variants (e.g., STM32F051R8T6) and is functionally compatible with STM32F051C8/K8 in smaller packages - though I/O count and peripheral mapping differ. Pin compatibility is guaranteed within the same package option (LQFP64) across Flash density variants (x4/x6/x8).
STM32F051R8T7TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-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:
- I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- DMA, PDR, POR, PVD, PWM, Temp Sensor, WDT
- Number of I/O:
- 55
- 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 19x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F051R8T7TR FAQ
1.How can I place an order for STM32F051R8T7TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F051R8T7TR 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 STM32F051R8T7TR reliable?
The price and inventory of STM32F051R8T7TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F051R8T7TR is usually 5 days.
3.What payment methods are accepted for STM32F051R8T7TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F051R8T7TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F051R8T7TR?
STM32F051R8T7TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F051R8T7TR 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 STM32F051R8T7TR?
For technical support, including STM32F051R8T7TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F051R8T7TR requirements.
6.How does Aetrix verify that STM32F051R8T7TR is sourced from the original manufacturer or authorized distributors?
All STM32F051R8T7TR 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 STM32F051R8T7TR meets industry standards.
7.What is the process for return or replacement of STM32F051R8T7TR?
All STM32F051R8T7TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F051R8T7TR, 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 STM32F051R8T7TR part is unused and in its original packaging.
Return procedure for STM32F051R8T7TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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