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STMicroelectronics STM32F303RDT6
- Part No.:
- STM32F303RDT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32F303RDT6.pdf
- Description:
- IC MCU 32BIT 384KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:412
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Product details
Overview
STM32F303RDT6 from STMicroelectronics is an ARM® Cortex®-M4 32-bit microcontroller with FPU, 72 MHz max clock, 384 KB Flash, 64 KB SRAM (with HW parity on first 32 KB), and integrated analog peripherals including four op-amps, seven comparators, two 12-bit DACs, and four ADCs supporting up to 40 channels at 0.20 µs conversion time - used in industrial motor control and digital power supply feedback loops.
For engineers reviewing the STM32F303RDT6 datasheet, STM32F303RDT6 pinout, STM32F303RDT6 application, or STM32F303RDT6 equivalent, key selection criteria include its dual 12-bit DACs with 2.4–3.6 V analog supply, rail-to-rail comparators, programmable gain amplifier (PGA) capability via op-amp routing, and CAN 2.0B interface for real-time embedded control systems.
Technical Context
The STM32F303RDT6 implements a tightly coupled Cortex-M4 core with hardware floating-point unit and memory protection unit (MPU), enabling deterministic real-time execution of DSP-intensive control algorithms. Its interconnect matrix enables concurrent peripheral access without bus contention.
Analog subsystem integration includes four operational amplifiers configurable as PGAs with all terminals accessible, seven ultra-fast comparators with internal hysteresis, and four independent ADCs with selectable resolution (6/8/10/12-bit) and dedicated analog supply (2.0–3.6 V), supporting simultaneous sampling for multi-axis sensor fusion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM Cortex-M4 with FPU, 72 MHz max, 90 DMIPS - enables real-time motor vector control and digital signal processing without external coprocessor. |
| Flash / SRAM | 384 KB Flash (512 KB variant exists but RDT6 is 384 KB), 64 KB SRAM with HW parity on first 32 KB - supports robust firmware storage and safety-critical data buffering. |
| ADC | Four 12-bit ADCs, 0.20 µs conversion, up to 40 channels, 0–3.6 V range - allows synchronized sampling across multiple current/voltage sensors in power converters. |
| DAC | Two 12-bit DAC channels, 2.4–3.6 V analog supply - provides precise reference generation or analog waveform synthesis for closed-loop calibration. |
| Op-Amp | Four rail-to-rail op-amps, PGA mode supported, all terminals accessible - enables configurable gain stages for sensor signal conditioning without external components. |
| Comparator | Seven ultra-fast rail-to-rail comparators, 2.0–3.6 V analog supply - delivers sub-100 ns response for overcurrent/overvoltage fault detection in power stages. |
| CAN Interface | CAN 2.0B Active controller - supports deterministic communication in industrial automation networks with error handling and message filtering. |
Pinout & Package
LQFP64 package (10 × 10 mm, 0.5 mm pitch), thermally enhanced with exposed pad; 64-pin quad flat pack suitable for automated SMT assembly and thermal management in compact motor drive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Core & analog power supply | Separate 2.0–3.6 V domains enable noise isolation between digital logic and precision analog circuits. |
| VSS, VSSA | Digital & analog ground | Independent ground planes reduce coupling between high-speed switching and sensitive analog inputs. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | Up to 115 fast I/Os, many 5 V-tolerant - support direct interfacing with legacy industrial logic and level-shifting-free sensor connections. |
| PA1, PA2, PA3, PA4 | DAC output / ADC input | Direct routing to dual DAC outputs and multiple ADC channels enables mixed-signal feedback loop implementation on single chip. |
| PA6, PA7, PB0, PB1 | Op-amp inputs/outputs | Full terminal access (non-inverting input, inverting input, output) allows flexible PGA, filter, or comparator configurations without external passives. |
| PA11, PA12 | USB D+/D− | Integrated USB 2.0 full-speed PHY eliminates need for external transceiver in field-service or configuration interfaces. |
| PD0, PD1 | CAN RX/TX | Dedicated CAN bus pins with internal pull-up/down options simplify differential bus termination and ESD protection layout. |
Key Features
| Feature | Design Value |
|---|---|
| Flexible static memory controller (FSMC) | Supports external SRAM, PSRAM, NOR flash, and NAND flash with configurable timing - enables expansion of code/data space beyond on-chip limits for complex HMI or logging applications. |
| Capacitive sensing controller (TSC) | 24-channel touch sensing with hardware-accelerated acquisition - allows integration of touchkey, slider, or rotary controls without CPU overhead or external IC. |
| Advanced timers (TIM1/TIM8) | Three 16-bit advanced-control timers with 6 PWM channels, deadtime insertion, and emergency stop - essential for three-phase inverter gate driving with fault-safe shutdown. |
| RTC with alarm & wakeup | Calendar RTC with periodic wakeup from Stop/Standby modes - enables low-power scheduling for sensor polling or maintenance tasks in battery-backed systems. |
| SWD/JTAG debug | Serial wire debug (SWD) and JTAG with ETM trace - supports real-time instruction tracing and non-intrusive debugging of time-critical control loops. |
Applications
| Industrial Motor Control | Digital Power Supply |
|---|---|
Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase BLDC/PMSM motors in HVAC blowers or pump drives. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithm, PWM generation with deadtime, current sensing via ADCs, and fault monitoring via comparators. Use Value: Integrated op-amps condition shunt voltage signals; dual DACs generate precise reference waveforms; advanced timers deliver synchronized 6-channel PWM with <100 ns deadtime accuracy. | Use Scenario: Isolated DC-DC converter with adaptive voltage regulation and telemetry reporting. IC Role / Device Role / Timing Role: Voltage/current loop controller, isolated communication interface (CAN/UART), and analog monitoring of output rails and temperature. Use Value: Four ADCs sample multiple analog points simultaneously; seven comparators detect overvoltage/overcurrent faults within 80 ns; CAN interface reports status to central controller. |
| Medical Infusion Pump | Test & Measurement Equipment |
Use Scenario: Precision fluid delivery system requiring safety-certified flow rate control and battery backup operation. IC Role / Device Role / Timing Role: Safety-monitoring MCU with redundant ADC sampling, RTC-based dose timing, and VBAT-supplied backup registers. Use Value: HW parity on SRAM ensures data integrity; programmable voltage detector (PVD) triggers graceful shutdown before brownout; calendar RTC maintains accurate dosing schedule during main power loss. | Use Scenario: Portable oscilloscope front-end with analog signal capture, waveform generation, and USB host connectivity. IC Role / Device Role / Timing Role: High-speed ADC acquisition engine, arbitrary waveform generator via DACs, and USB 2.0 full-speed interface for PC data transfer. Use Value: Four ADCs support interleaved sampling up to 10 MSPS equivalent; dual DACs reconstruct waveforms at >1 MSPS; USB LPM reduces host-side power consumption during idle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F303VCT6 | LQFP100 package, 256 KB Flash, same peripheral set - adds 36 more GPIOs and extra ADC/DAC channels. | Suitable for designs requiring higher I/O count or additional analog resources (e.g., multi-sensor data loggers). | Select when board layout allows larger footprint and application needs extended analog channel count or memory headroom. |
| STM32F407VGT6 | Cortex-M4F at 168 MHz, 1 MB Flash, no integrated op-amps/comparators - higher compute throughput but lacks analog front-end integration. | Better for compute-heavy tasks (e.g., FFT-based spectral analysis) where external analog signal chain is already defined. | Choose only if analog subsystem is handled externally and raw processing performance outweighs integrated analog convenience. |
Compared with STM32F303VCT6, the RDT6 offers identical analog feature density in a smaller LQFP64 package but trades I/O count and Flash size; versus STM32F407VGT6, it sacrifices CPU speed and memory for on-die op-amps and comparators - making it optimal for cost-sensitive, analog-rich embedded control rather than pure computation.
Availability
STM32F303RDT6 is available at Aetrix Electronics and suitable for industrial motor control, digital power supply design, medical infusion pumps, and portable test equipment requiring stable component supply across long production lifecycles.
Supply support for STM32F303RDT6 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, sensors, and automotive-grade components since 1987.
The STM32F3 series targets cost-sensitive, analog-intensive embedded applications - combining high-precision analog peripherals with real-time Cortex-M4 performance for motor control, digital power, and human-machine interface systems.
FAQ
What is the maximum operating frequency and core type of the STM32F303RDT6?
The STM32F303RDT6 features an ARM Cortex-M4 core with integrated FPU, operating at up to 72 MHz. It delivers 90 DMIPS from CCM memory and supports single-cycle multiplication and hardware division. This frequency is achievable across the full industrial temperature range (–40°C to +85°C) under 2.0–3.6 V supply conditions, as confirmed in Section 6.3.1 of the official datasheet.
Does the STM32F303RDT6 support hardware CRC calculation?
Yes, the STM32F303RDT6 includes a dedicated cyclic redundancy check (CRC) calculation unit compliant with IEEE 802.3. It supports programmable polynomial (default 32-bit CRC-32) and processes data in 32-bit words or bytes. This unit offloads CRC computation from the CPU during firmware updates, secure boot validation, or communication frame integrity checking.
How many analog comparators and operational amplifiers are integrated?
The STM32F303RDT6 integrates seven ultra-fast rail-to-rail analog comparators and four operational amplifiers. All op-amp terminals (non-inverting input, inverting input, output) are accessible on dedicated pins, enabling PGA, active filtering, or comparator hysteresis configurations without external components - verified in Sections 3.17 and 3.16 of the datasheet.
Is the STM32F303RDT6 pin-compatible with other STM32F303xD variants?
No - the STM32F303RDT6 (LQFP64) is not pin-compatible with LQFP100, LQFP144, UFBGA100, or WLCSP100 variants due to differing pin counts and package-specific signal mappings. While functional peripherals match across the F303xD family, pin assignments vary significantly; migration requires PCB redesign and signal re-routing, as documented in Table 13 (pin definitions) and Section 4 of the datasheet.
STM32F303RDT6 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, USB
- Peripherals:
- DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 51
- Program Memory Size:
- 384KB (384K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 80K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 22x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F303RDT6 FAQ
1.How can I place an order for STM32F303RDT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F303RDT6 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 STM32F303RDT6 reliable?
The price and inventory of STM32F303RDT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F303RDT6 is usually 5 days.
3.What payment methods are accepted for STM32F303RDT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F303RDT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F303RDT6?
STM32F303RDT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F303RDT6 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 STM32F303RDT6?
For technical support, including STM32F303RDT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F303RDT6 requirements.
6.How does Aetrix verify that STM32F303RDT6 is sourced from the original manufacturer or authorized distributors?
All STM32F303RDT6 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 STM32F303RDT6 meets industry standards.
7.What is the process for return or replacement of STM32F303RDT6?
All STM32F303RDT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F303RDT6, 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 STM32F303RDT6 part is unused and in its original packaging.
Return procedure for STM32F303RDT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32F303RDT6 Tags
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ATTINY4-TSHR
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