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STMicroelectronics STM32F303R8T6TR
- Part No.:
- STM32F303R8T6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32F303R8T6TR.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,850
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Product details
Overview
STM32F303R8T6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, operating up to 72 MHz, featuring 64 KB Flash, 12 KB SRAM with hardware parity, and integrated analog peripherals including two 12-bit ADCs (0.20 µs conversion), three 12-bit DACs, three rail-to-rail comparators, and one programmable-gain operational amplifier - deployed in motor control, digital power conversion, and industrial sensor interface applications.
For engineers reviewing the STM32F303R8T6TR datasheet, STM32F303R8T6TR pinout, STM32F303R8T6TR application, or STM32F303R8T6TR equivalent, key selection considerations include analog integration density (ADC/DAC/OPAMP/COMP), 51-pin I/O count with 5 V tolerance, CAN 2.0B support, and LQFP64 package compatibility for mixed-signal embedded designs.
Technical Context
The device implements an Arm Cortex-M4 core with single-cycle multiply and hardware divide, delivering 90 DMIPS at 72 MHz, and includes a dedicated CCM SRAM block (4 KB) for time-critical code/data with parity. Its interconnect matrix enables concurrent peripheral access without bus contention.
Analog subsystem integration includes independent analog supplies (VDDA: 2.0–3.6 V; VREF+ for DAC/ADC: 2.4–3.6 V), configurable ADC resolution (6/8/10/12 bits), and OPAMP usable in PGA mode with external gain-setting resistors - all coordinated via shared DMA and timer-triggered sampling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 72 MHz max - enables real-time DSP operations (e.g., PID, FFT) without external coprocessor |
| Flash / SRAM | 64 KB Flash + 12 KB SRAM (HW parity) + 4 KB CCM SRAM - supports robust firmware storage and deterministic interrupt response |
| ADC | 2 × 12-bit ADCs, 0.20 µs conversion, 21-channel mux - allows simultaneous sampling of multiple motor phase currents or sensor signals |
| DAC | 3 × 12-bit DACs, 2.4–3.6 V analog supply - provides precise reference generation or analog waveform synthesis |
| OPAMP & COMP | 1 PGA-capable op-amp + 3 ultra-fast comparators - enables closed-loop analog signal conditioning and overcurrent protection |
| Timers | 11 timers including advanced-control TIM1 (6-PWM + deadtime) + 2 basic timers for DAC - supports multi-phase motor commutation and synchronized analog output |
| Communication | CAN 2.0B + 3×USART (1 with ISO7816) + I²C + SPI - meets industrial fieldbus and serial diagnostics requirements |
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 and ground rails | Separate digital/analog domains enable noise isolation; VDDA must be ≥2.0 V for full ADC/DAC/OPAMP functionality |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE15 | General-purpose I/O | Up to 51 pins, most 5 V-tolerant; all mappable to EXTI for wake-up or edge-triggered events |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1, PC0–PC5 | Analog input channels | Support ADC1/ADC2 inputs; some dual-use with DAC/OPAMP/COMP terminals |
| PA4, PA5, PA6, PA7, PB0, PB1 | DAC outputs & OPAMP terminals | PA4/PA5 = DAC1/DAC2 outputs; PA6/PA7/PB0/PB1 = OPAMP non-inv/inverting inputs & output |
| PA1, PA2, PA3, PB2, PB5, PB6 | Comparator inputs | Three comparators (COMP1–COMP3) with selectable hysteresis and window mode |
| PA11, PA12, PB8, PB9 | CAN_TX/CAN_RX, I²C_SCL/SDA | Dedicated alternate functions; CAN supports bit rates up to 1 Mbps with automatic retransmission |
| PA9, PA10, PB6, PB7, PC10, PC11, PC12 | USART TX/RX, CLK, CTS/RTS | Three USARTs; USART1 supports LIN, IrDA, modem control, and ISO7816 smartcard interface |
Key Features
| Feature | Design Value |
|---|---|
| Hardware CRC unit | Accelerates firmware integrity checks and communication frame validation without CPU overhead |
| Routine booster (CCM SRAM) | 4 KB tightly coupled memory on instruction/data bus - reduces cache misses for critical ISR or control loops |
| Capacitive sensing controller (TSC) | 18-channel touch sensing with built-in charge transfer and noise filtering - enables button/slider/wheel UI without external IC |
| Programmable voltage detector (PVD) | Configurable threshold monitoring of VDD - triggers interrupt or reset before brownout affects analog accuracy |
| Calendar RTC with alarm & wakeup | Independent 32.768 kHz clock domain with tamper detection and periodic wake-up from Stop mode - extends battery life in low-power nodes |
Applications
| Motor Control | Digital Power Supply |
|---|---|
Use Scenario: Three-phase BLDC motor drive with current sensing, PWM generation, and thermal monitoring. IC Role / Device Role / Timing Role: Main controller executing FOC algorithm, generating synchronized 6-channel PWM with deadtime, sampling phase currents via dual ADCs, and regulating loop timing via advanced timers. Use Value: Integrated op-amp and comparators enable analog current limiting and overcurrent shutdown within <1 µs, eliminating external protection circuitry. | Use Scenario: Isolated DC-DC converter with adaptive voltage regulation and fault logging. IC Role / Device Role / Timing Role: Digital power controller managing PWM duty cycle, reading output voltage/current via DAC-referenced ADC, and communicating status via CAN or USART. Use Value: Dual 12-bit DACs generate precise reference voltages for feedback loops; 3.3 V tolerant I/O interfaces directly with isolated gate drivers and optocouplers. |
| Industrial Sensor Hub | Human-Machine Interface (HMI) |
Use Scenario: Multi-sensor node aggregating temperature, pressure, and vibration data for predictive maintenance. IC Role / Device Role / Timing Role: Signal acquisition hub with simultaneous ADC sampling, temperature compensation via internal sensor, and timestamping via RTC. Use Value: Hardware parity on SRAM and CRC unit ensure data integrity during long-term unattended operation in harsh environments. | Use Scenario: Touch-enabled control panel for HVAC or lighting systems with proximity wake-up. IC Role / Device Role / Timing Role: Capacitive touch controller with TSC, driving LED indicators via GPIO, and managing user input via interrupt-driven state machine. Use Value: 18-channel TSC supports up to 12 independent touch keys plus linear slider - reduces BOM cost vs. dedicated touch IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F303K8T6 | LQFP32 package (32-pin), reduced I/O count (25), same core/peripherals but no DAC2 or COMP3 | Suitable for space-constrained designs where only one DAC and two comparators are needed | Select when board area is critical and analog channel count can be reduced |
| STM32F334R8T6 | Same LQFP64 package; adds high-resolution timer (HRTIM) and enhanced analog features (fast comparator blanking, flexible DAC trigger) | Targeted at digital power control requiring sub-nanosecond PWM timing precision | Choose for advanced power conversion where HRTIM's 184 ps resolution is required |
Compared with STM32F303K8T6, the STM32F303R8T6TR offers higher I/O density and full analog feature set; versus STM32F334R8T6, it trades HRTIM capability for broader general-purpose analog integration and lower cost in standard motor/sensor applications.
Availability
STM32F303R8T6TR is available at Aetrix Electronics and suitable for motor control, digital power conversion, industrial sensor interface, and human-machine interface applications requiring stable component supply across extended production lifecycles.
Supply support for STM32F303R8T6TR 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 devices, sensors, and analog ICs for industrial, automotive, and consumer markets.
The STM32F3-series targets cost-sensitive, analog-intensive embedded applications - emphasizing integrated signal conditioning, real-time control, and rapid prototyping with standardized HAL/LL libraries and STM32Cube ecosystem support.
FAQ
What is the maximum operating frequency and associated performance metric?
The STM32F303R8T6TR operates at up to 72 MHz using its internal PLL, achieving 90 DMIPS measured under CoreMark conditions. This performance level is sustained with zero wait-state execution from Flash memory due to ART Accelerator and prefetch buffer, enabling deterministic real-time response in control loops.
Does this MCU support hardware-based cryptographic acceleration?
No, the STM32F303R8T6TR does not include dedicated cryptographic accelerators (e.g., AES, SHA, PKA). It relies on software libraries for encryption tasks. For hardware crypto, consider STM32L4+, STM32G0, or STM32H7 series devices with CryptoCell or AES engines.
Can the internal op-amp be used in transimpedance configuration for photodiode sensing?
Yes - the single operational amplifier supports PGA mode with externally configurable gain via resistive feedback. Its input offset voltage (±1.5 mV typ.) and bandwidth (12 MHz) allow use in transimpedance amplifiers for medium-speed optical sensing, provided layout minimizes parasitic capacitance at the inverting input.
What debug interfaces are supported and what pins do they require?
The device supports Serial Wire Debug (SWD) using SWCLK (PA14) and SWDIO (PA13), and full JTAG via TCK/TMS/TDI/TDO/TRESET (PA14/PA13/PB3/PB4/PA15). SWD is recommended for minimal pin usage; both interfaces support breakpoints, watchpoints, and real-time memory inspection via ST-LINK or compatible debug probes.
STM32F303R8T6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- STM32F3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 72MHz
- Connectivity:
- CANbus, I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 51
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 15x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F303R8T6TR FAQ
1.How can I place an order for STM32F303R8T6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F303R8T6TR 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 STM32F303R8T6TR reliable?
The price and inventory of STM32F303R8T6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F303R8T6TR is usually 5 days.
3.What payment methods are accepted for STM32F303R8T6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F303R8T6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F303R8T6TR?
STM32F303R8T6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F303R8T6TR 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 STM32F303R8T6TR?
For technical support, including STM32F303R8T6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F303R8T6TR requirements.
6.How does Aetrix verify that STM32F303R8T6TR is sourced from the original manufacturer or authorized distributors?
All STM32F303R8T6TR 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 STM32F303R8T6TR meets industry standards.
7.What is the process for return or replacement of STM32F303R8T6TR?
All STM32F303R8T6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F303R8T6TR, 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 STM32F303R8T6TR part is unused and in its original packaging.
Return procedure for STM32F303R8T6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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