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STMicroelectronics STM32F051R6T6TR
- Part No.:
- STM32F051R6T6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32F051R6T6TR.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,472
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Product details
Overview
STM32F051R6T6TR from STMicroelectronics is a 32-bit ARM Cortex-M0 microcontroller in LQFP64 package, featuring 32 KB Flash, 8 KB SRAM with hardware parity, 48 MHz max CPU frequency, one 12-bit ADC (16-channel, 1 µs conversion), and one 12-bit DAC-designed for cost-sensitive industrial control and sensor interface applications requiring integrated analog peripherals and low-power operation.
For engineers reviewing the STM32F051R6T6TR datasheet, STM32F051R6T6TR pinout, STM32F051R6T6TR application, or STM32F051R6T6TR equivalent, key selection considerations include its 32 KB Flash density, 55 fast I/Os (36 with 5 V tolerance), dual USARTs with LIN/IrDA support, two I²C interfaces (one Fast Mode Plus), and RTC with alarm/wakeup from Stop/Standby modes.
Technical Context
The STM32F051R6T6TR implements an ARM Cortex-M0 core with Harvard architecture, supporting Thumb-2 instruction set and NVIC with 32 interrupt vectors. It integrates a programmable voltage detector (PVD), CRC calculation unit, and three independent clock sources: 4–32 MHz HSE, 32 kHz LSE for RTC, and internal 8 MHz HSI with PLL multiplier.
Its analog subsystem includes a single 12-bit ADC with selectable resolution (6/8/10/12-bit), VREFINT reference, temperature sensor, and two rail-to-rail comparators with window mode and interrupt capability-enabling closed-loop sensing without external signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, 48 MHz max - enables deterministic real-time control with <10 ns interrupt latency. |
| Flash Memory | 32 KB - sufficient for firmware with USB stack, sensor fusion, and communication protocol stacks. |
| SRAM | 8 KB with hardware parity - supports robust data buffering and fault-tolerant variable storage. |
| ADC | 12-bit, 1 µs conversion, 16 channels - allows simultaneous sampling of multiple analog sensors at ≥1 MSPS aggregate rate. |
| DAC | 12-bit, buffered output - provides precise analog waveform generation or bias voltage control. |
| I/O Pins | 55 GPIOs, 36 with 5 V tolerance - simplifies 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), and TIM6 (DAC trigger) - supports motor control, IR decoding, and precise timing sequences. |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant ECOPACK®2 construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VSS, VSSA | Power supply and ground | Digital (VDD/VSS) and separate analog (VDDA/VSSA) rails ensure noise isolation for ADC/DAC operation. |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/O | 55 total pins mappable to EXTI; 36 support 5 V tolerant inputs for mixed-voltage system integration. |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7 | ADC input channels | Support up to 16-channel single-ended or 8-channel differential acquisition with internal VREFINT reference. |
| PA4 | DAC output | Buffered 12-bit analog output usable for precision voltage setting or waveform synthesis. |
| PA9, PA10, PA11, PA12, PB6, PB7 | USART/I²C/SPI alternate functions | Enable dual USART (LIN/IrDA/ISO7816), two I²C (one Fast Mode Plus), and two SPI (18 Mbps) with I²S multiplexing. |
| NRST | Active-low reset | Internal pull-up; accepts external reset pulse or watchdog timeout; supports low-power wakeup via EXTI. |
| BOOT0 | Boot mode select | High at power-on selects system memory bootloader; used for field firmware updates via USART. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware CRC unit | Enables fast integrity checking of firmware images or communication payloads without CPU overhead. |
| Capacitive touch sensing (18 channels) | Integrated TSC peripheral supports touchkey, linear, and rotary sensors-eliminates external touch controller IC. |
| Low-power modes (Stop/Standby) | Consumes ≤1.3 µA in Standby with RTC active-ideal for battery-powered remote sensors. |
| HDMI CEC interface | Direct CEC header reception with wakeup capability-enables consumer electronics remote control integration. |
| Serial wire debug (SWD) | 2-pin debug interface supports full JTAG-like functionality with minimal PCB footprint and no SWO trace overhead. |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Brushless DC motor commutation in HVAC blowers or small pumps using hall-effect or back-EMF sensing. IC Role / Device Role / Timing Role: Real-time PWM generation via TIM1 with deadtime insertion, ADC sampling of current/voltage feedback, and LIN bus communication to master controller. Use Value: Integrated advanced timer and 12-bit ADC enable precise current regulation and fault protection without external gate drivers or ADC ICs. | Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and ambient light over LoRaWAN or NB-IoT. IC Role / Device Role / Timing Role: Sensor data acquisition (ADC + temp sensor), low-power scheduling (RTC alarm), and UART-based modem control with auto-baud detection. Use Value: 1.3 µA Standby current with RTC active extends 2xAA battery life beyond 5 years; integrated VREFINT ensures stable ADC reference across temperature. |
| Home Appliance UI | Medical Diagnostic Tool |
Use Scenario: Touch-enabled control panel for washing machines or microwaves with slider, button, and proximity wake-up. IC Role / Device Role / Timing Role: Capacitive touch sensing (TSC), LED dimming via PWM, buzzer tone generation, and I²C display interface. Use Value: 18-channel TSC supports multi-touch gesture recognition and water-tolerant overlay design-reducing BOM by eliminating dedicated touch IC. | Use Scenario: Portable blood glucose meter requiring analog front-end precision, user interface, and USB data export. IC Role / Device Role / Timing Role: Precision 12-bit ADC for electrochemical strip reading, DAC for calibration reference, and USB CDC virtual COM port via software stack. Use Value: Hardware parity on SRAM and CRC unit ensure data integrity during critical medical measurements; 5 V-tolerant I/O simplifies connection to legacy test equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F051K6U6 | UFQFPN32 package (5 × 5 mm), 32-pin, 32 KB Flash, same peripherals - lacks 11 GPIOs and 2 I²C channels vs. R6T6TR. | Suitable for space-constrained designs where full I/O count and dual I²C are not required. | Select when PCB area is critical and peripheral count can be reduced; verify pin compatibility for existing layout reuse. |
| STM32F070F6P6 | 20-pin TSSOP, 32 KB Flash, no DAC, no capacitive touch, only one USART and one I²C - lower integration, lower cost. | Targeted at ultra-low-cost basic control tasks like LED drivers or simple timers without analog sensing. | Choose for cost-driven applications omitting DAC, touch, or dual communication interfaces; not suitable for sensor fusion or motor control. |
Compared with STM32F051K6U6 and STM32F070F6P6, the STM32F051R6T6TR delivers full peripheral integration-including DAC, dual I²C, and 18-channel TSC-in a standard LQFP64 package ideal for prototyping and production scalability.
Availability
STM32F051R6T6TR is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, home appliance UIs, and portable medical diagnostics requiring stable component supply and long-term manufacturability.
Supply support for STM32F051R6T6TR 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.
The STM32F0 series targets cost-sensitive, low-power embedded applications-delivering Cortex-M0 performance with rich analog integration, capacitive touch, and industrial-grade reliability in compact packages.
FAQ
What is the maximum operating frequency and voltage range for the STM32F051R6T6TR?
The STM32F051R6T6TR operates at up to 48 MHz with a digital supply voltage (VDD) range of 2.0 V to 3.6 V and analog supply (VDDA) from VDD to 3.6 V. Its internal 8 MHz RC oscillator can be multiplied via PLL to achieve full-speed operation without external crystal, though HSE up to 32 MHz is supported for higher timing accuracy.
Does the STM32F051R6T6TR support hardware debugging, and which interface is used?
Yes, it supports Serial Wire Debug (SWD) via dedicated SWCLK and SWDIO pins (PA14 and PA13), providing full read/write memory access, breakpoint setting, and real-time variable monitoring. SWD requires only two pins and is compatible with ST-LINK v2/v3 debug probes and common IDEs including STM32CubeIDE and Keil MDK.
How many analog inputs does the integrated ADC support, and what is its effective resolution?
The integrated 12-bit ADC supports up to 16 external channels (PA0–PA7, PB0–PB1, PC0–PC5) plus internal temperature sensor and VREFINT. Its effective number of bits (ENOB) is ≥11.2 bits per ST's electrical characteristics table (DocID022265 Rev 7, Table 54), with ±1 LSB INL and ±1.5 LSB DNL across the full 0–3.6 V input range.
Is the STM32F051R6T6TR pin-compatible with other members of the STM32F051xx family?
Yes, all LQFP64-packaged variants (e.g., STM32F051R4T6TR, STM32F051R8T6TR) share identical pinouts and mechanical footprint. Differences lie only in Flash size (16/32/64 KB) and SRAM (8 KB fixed); firmware is binary-compatible across the R4/R6/R8 subtypes when staying within Flash limits.
STM32F051R6T6TR 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:
- HDMI-CEC, I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 55
- 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 19x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F051R6T6TR FAQ
1.How can I place an order for STM32F051R6T6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F051R6T6TR 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 STM32F051R6T6TR reliable?
The price and inventory of STM32F051R6T6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F051R6T6TR is usually 5 days.
3.What payment methods are accepted for STM32F051R6T6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F051R6T6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F051R6T6TR?
STM32F051R6T6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F051R6T6TR 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 STM32F051R6T6TR?
For technical support, including STM32F051R6T6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F051R6T6TR requirements.
6.How does Aetrix verify that STM32F051R6T6TR is sourced from the original manufacturer or authorized distributors?
All STM32F051R6T6TR 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 STM32F051R6T6TR meets industry standards.
7.What is the process for return or replacement of STM32F051R6T6TR?
All STM32F051R6T6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F051R6T6TR, 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 STM32F051R6T6TR part is unused and in its original packaging.
Return procedure for STM32F051R6T6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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