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STMicroelectronics STM32F303R8T7
- Part No.:
- STM32F303R8T7
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32F303R8T7.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,972
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Product details
Overview
STM32F303R8T7 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, operating up to 72 MHz, featuring 64 KB Flash, 16 KB SRAM (12 KB + 4 KB CCM), dual 12-bit ADCs (21-channel, 0.20 µs conversion), three 12-bit DACs, and one rail-to-rail operational amplifier-designed for precision analog signal conditioning and real-time motor control in industrial inverters.
For engineers reviewing the STM32F303R8T7 datasheet, STM32F303R8T7 pinout, STM32F303R8T7 application, or STM32F303R8T7 equivalent, key selection criteria include integrated op-amp PGA capability, simultaneous ADC/DAC timing synchronization, CAN 2.0B interface support, and LQFP64 package compatibility with high-density mixed-signal PCB layouts.
Technical Context
The device integrates an Arm Cortex-M4 core with hardware floating-point unit and DSP instructions, enabling deterministic execution of motor control algorithms and digital filter routines. Its interconnect matrix decouples peripheral bus arbitration, allowing concurrent ADC sampling, DAC output, and CAN message transmission without CPU intervention.
Real-time analog subsystems are tightly synchronized: the 32-bit advanced timer (TIM1) provides deadtime-controlled PWM outputs while triggering ADC conversions and DAC updates via hardware triggers-ensuring sub-microsecond phase alignment across power stage, sensing, and feedback paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 72 MHz max - enables real-time execution of complex control loops and FFT-based diagnostics |
| Flash / SRAM | 64 KB Flash, 16 KB SRAM (12 KB + 4 KB CCM with parity) - supports secure firmware storage and dual-bank execution with error detection |
| ADC | 2 × 12-bit ADCs, 21 channels, 0.20 µs conversion - allows simultaneous voltage/current sensing in 3-phase motor drives |
| DAC | 3 × 12-bit DACs, 2.4–3.6 V analog supply - generates precise reference waveforms for analog comparators and op-amp biasing |
| Op-Amp | 1 × rail-to-rail op-amp with PGA mode, 2.4–3.6 V supply - configurable as transimpedance amplifier for current-sense resistor feedback |
| Communication | CAN 2.0B, 3× USART (1 with ISO7816), I²C, SPI - enables fieldbus integration, sensor telemetry, and bootloader over serial/CAN |
| Timers | 11 timers including TIM1 (advanced-control), TIM2/TIM3 (general-purpose), TIM6/TIM7 (DAC-trigger) - supports multi-axis motion control with quadrature encoder input and PWM deadtime |
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/VSS | Power supply / Ground | Dual-domain supply: VDD powers digital logic; separate VDDA (2.0–3.6 V) required for analog peripherals to minimize noise coupling |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE15 | General-purpose I/O | 51 fast I/Os, all mappable to external interrupt vectors; up to 18 pins support capacitive touch sensing with built-in TSC |
| PA1/PA2/PA3 | ADC1_IN1/ADC1_IN2/ADC1_IN3 | Direct connection to 12-bit ADC1 channel inputs - used for motor phase current sampling with hardware oversampling |
| PA4/PA5 | DAC1_OUT1/DAC1_OUT2 | Analog outputs from DAC1 - drive op-amp reference or comparator thresholds with 12-bit resolution and monotonicity |
| PA7 | COMP1_OUT | Comparator 1 output terminal - feeds into TIM1 break input for hardware emergency shutdown during overcurrent events |
| PA11/PA12 | USB_DM/USB_DP | Full-speed USB 2.0 interface - supports device enumeration and firmware update without external PHY |
| PA13/PA14 | SWDIO/SWCLK | Serial Wire Debug interface - enables non-intrusive real-time debugging and flash programming via standard JTAG/SWD probes |
| PD0/PD1 | CAN_RX/CAN_TX | Controller Area Network physical layer interface - compliant with ISO 11898-1, supports baud rates up to 1 Mbps for industrial network communication |
Key Features
| Feature | Design Value |
|---|---|
| Hardware CRC unit | Accelerates firmware integrity checks and communication frame validation without CPU load |
| Programmable voltage detector (PVD) | Configurable threshold monitoring on VDD - triggers interrupt or reset before brownout affects analog accuracy |
| Temperature sensor | Integrated die temperature measurement (±1.5°C accuracy) - enables thermal derating of motor drive output stages |
| RTC with alarm & wakeup | Calendar-based real-time clock with periodic Stop-mode wakeup - supports low-power sensor logging at configurable intervals |
| 96-bit unique ID | Factory-programmed serial number - used for secure device authentication and license binding in OEM applications |
Applications
| Industrial Motor Control | Medical Sensor Hub |
|---|---|
Use Scenario: Closed-loop control of 3-phase BLDC motors in HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: MCU executes FOC algorithm, synchronizes 6-channel PWM generation, samples current/voltage via dual ADCs, and conditions signals using integrated op-amp. Use Value: Eliminates need for external op-amps and precision ADC drivers, reducing BOM count and layout area by 30% in compact inverter modules. | Use Scenario: Multi-parameter physiological monitoring (ECG, SpO₂, temperature) in portable diagnostic devices. IC Role / Device Role / Timing Role: Simultaneous acquisition of analog biosignals using 12-bit ADCs with hardware oversampling, filtering via DSP instructions, and secure data transmission via USART+ISO7816. Use Value: On-chip op-amp and comparators enable active electrode biasing and lead-off detection without discrete analog front-end components. |
| Energy Metering | Smart Actuator Interface |
Use Scenario: DIN-rail mounted electricity meters measuring voltage, current, and power quality parameters. IC Role / Device Role / Timing Role: High-accuracy metrology engine using dual ADCs with differential input mode, internal reference calibration, and harmonic analysis via FPU-accelerated FFT. Use Value: Meets IEC 62053-22 Class 0.5S accuracy requirements with single-chip solution, avoiding external metrology ASICs. | Use Scenario: Valve and damper position control in building automation systems with CAN fieldbus connectivity. IC Role / Device Role / Timing Role: Real-time PID loop execution, analog position feedback processing via DAC-driven potentiometer interface, and CAN 2.0B command reception with hardware message filtering. Use Value: Integrated CAN controller and 16-bit advanced timers reduce external component count and ensure deterministic response to fieldbus commands within 50 µs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F303K8T6 | LQFP32 package, 48-pin count, reduced I/O (up to 37), same core/peripherals but no USB interface | Suitable for space-constrained designs where USB is unnecessary and fewer analog channels are needed | Select when board area is critical and full LQFP64 I/O count is not required |
| STM32F303VCT6 | LQFP100 package, 100-pin count, 256 KB Flash, 48 KB SRAM, adds second CAN interface and additional timers | Targeted at higher-channel motor drives and multi-sensor fusion systems requiring extended memory and peripheral concurrency | Choose for scalable designs needing future firmware expansion or dual-CAN redundancy |
Compared with STM32F303K8T6, the STM32F303R8T7 offers USB connectivity and 14 extra GPIOs in LQFP64; versus STM32F303VCT6, it trades memory and dual-CAN for lower cost and smaller footprint-making it optimal for mid-tier industrial controllers balancing feature density and PCB real estate.
Availability
STM32F303R8T7 is available at Aetrix Electronics and suitable for industrial motor control, medical sensor hubs, energy metering, and smart actuator interfaces requiring stable component supply and long-term production continuity.
Supply support for STM32F303R8T7 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 analog/mixed-signal ICs for industrial, automotive, and consumer markets.
The STM32F3 series targets cost-sensitive, high-precision analog-intensive applications-delivering integrated op-amps, comparators, and high-speed ADCs to simplify signal chain design in motor control and sensor processing systems.
FAQ
What is the maximum operating frequency and how is it achieved?
The STM32F303R8T7 achieves a maximum CPU frequency of 72 MHz using its internal PLL, which multiplies the 8 MHz HSI oscillator or an external crystal (4–32 MHz). The PLL supports fractional division and can be configured to generate precise system clocks while maintaining low jitter for analog peripheral synchronization.
Does this MCU support hardware-accelerated cryptographic functions?
No, the STM32F303R8T7 does not include dedicated cryptographic accelerators such as AES or SHA engines. It relies on software libraries for encryption; for hardware crypto, consider STM32L4 or STM32H7 series devices with CryptoCell or HASH/AES peripherals.
Can the integrated op-amp be used in instrumentation amplifier configuration?
Yes-the single rail-to-rail op-amp supports programmable gain amplifier (PGA) mode with selectable gains of 1, 2, 4, 8, 16, or 32 via internal resistor networks. While not a true 3-op-amp instrumentation amplifier, it enables high-precision differential sensing when combined with external resistors and ADC input routing.
What debug interfaces are supported and what are their key limitations?
The device supports Serial Wire Debug (SWD) and JTAG via PA13/PA14 (SWDIO/SWCLK) and optional JTMS/JTCK pins. SWD is recommended for production due to its 2-pin footprint and full debug capability; JTAG requires 5 pins and is primarily used during early development. No SWO trace output is available on this variant.
STM32F303R8T7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- STM32F3
- Packaging:
- Tray
- 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:
- 12K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 21x12b; D/A 3x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F303R8T7 FAQ
1.How can I place an order for STM32F303R8T7 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F303R8T7 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 STM32F303R8T7 reliable?
The price and inventory of STM32F303R8T7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F303R8T7 is usually 5 days.
3.What payment methods are accepted for STM32F303R8T7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F303R8T7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F303R8T7?
STM32F303R8T7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F303R8T7 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 STM32F303R8T7?
For technical support, including STM32F303R8T7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F303R8T7 requirements.
6.How does Aetrix verify that STM32F303R8T7 is sourced from the original manufacturer or authorized distributors?
All STM32F303R8T7 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 STM32F303R8T7 meets industry standards.
7.What is the process for return or replacement of STM32F303R8T7?
All STM32F303R8T7 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F303R8T7, 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 STM32F303R8T7 part is unused and in its original packaging.
Return procedure for STM32F303R8T7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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