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STMicroelectronics STM32F303CBT6TR
- Part No.:
- STM32F303CBT6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32F303CBT6TR.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,995
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Product details
Overview
STM32F303CBT6TR from STMicroelectronics is an Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 72 MHz, featuring 128 KB Flash, 40 KB SRAM (with HW parity on first 16 KB), 4x 12-bit ADCs (39-channel, 0.2 µs conversion), 2x 12-bit DACs, and 7 rail-to-rail comparators - deployed in motor control systems requiring real-time analog signal conditioning and PWM generation.
For engineers reviewing the STM32F303CBT6TR datasheet, STM32F303CBT6TR pinout, STM32F303CBT6TR application, or STM32F303CBT6TR equivalent, key selection criteria include integrated op-amps in PGA mode, CAN 2.0B interface, capacitive touch sensing support, and dual 16-bit advanced timers with deadtime generation for three-phase inverter control.
Technical Context
The device integrates a Cortex-M4 core with hardware floating-point unit and memory protection unit (MPU), enabling deterministic real-time execution of motor control algorithms and digital power supply regulation. Its interconnect matrix decouples peripheral bus arbitration from CPU timing, supporting concurrent high-speed ADC sampling, DAC output, and timer-triggered PWM updates without CPU intervention.
Four operational amplifiers are fully accessible for programmable gain amplifier (PGA) configurations, each with dedicated analog supply (2.4–3.6 V) and independent routing to ADC inputs or comparator references. The 7 fast comparators feature synchronized sampling and window mode, directly feeding interrupt logic or timer capture units for overcurrent protection in power stages.
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., Clarke/Park transforms) in under 1 µs per cycle. |
| Flash / SRAM | 128 KB Flash + 40 KB SRAM (16 KB with HW parity) - sufficient for field-oriented control (FOC) firmware plus safety checksums and runtime variables. |
| ADC Performance | 4 × 12-bit ADCs, 0.2 µs conversion, up to 39 channels - supports simultaneous current/voltage sensing across 3-phase motor drives with <50 ns inter-channel skew. |
| DAC & Comparators | 2 × 12-bit DACs (2.4–3.6 V analog supply); 7 rail-to-rail comparators - enables closed-loop analog reference generation and fast overvoltage/overcurrent trip detection. |
| Timers | 2 × 16-bit advanced-control timers (TIM1/TIM8) with 6 PWM outputs, deadtime insertion, emergency stop - meets IEC 60730 Class B functional safety requirements for motor drivers. |
| Communication | CAN 2.0B, 5× USART/UART, 3× SPI (2 with I2S), USB FS - supports industrial fieldbus integration, debug over UART, and audio feedback in HMI applications. |
| Analog Peripherals | 4 × OPAMPs (configurable as PGA), 24-channel capacitive sensing - allows sensorless rotor position estimation and touch-based user interface on same die. |
Pinout & Package
LQFP48 (7 × 7 mm, 0.5 mm pitch) package with 37 general-purpose I/Os, all mappable to external interrupt vectors; 15 pins support 5 V tolerance for mixed-voltage system interfacing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Digital/analog power supply | Separate 2.0–3.6 V domains isolate noise-sensitive analog peripherals (ADC/DAC/OPAMP) from digital switching transients. |
| VSS, VSSA | Digital/analog ground | Independent ground planes reduce coupling between high-speed GPIO toggling and precision analog measurement paths. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE15 | General-purpose I/O | 37 total GPIOs support alternate functions including TIM1/TIM8 PWM outputs, ADC1–4 inputs, and CAN_RX/TX - enabling full motor control peripheral mapping in LQFP48 footprint. |
| PA11/PA12 | USB D+/D− | Dedicated full-speed USB 2.0 PHY pins with internal pull-ups - eliminates need for external USB termination resistors. |
| PA13/PA14/PA15 | SWDIO/SWCLK/NRST | Serial Wire Debug interface with hardware reset - enables non-intrusive firmware update and real-time trace without占用 additional UART or SWO pins. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Gain Amplifier (PGA) | 4 OPAMPs with selectable gain (1–100×) and direct connection to ADC inputs - eliminates external signal-conditioning ICs in current-sense circuits. |
| Advanced Timer Deadtime Control | TIM1/TIM8 support programmable deadtime (1–1023 ns) with automatic polarity inversion - prevents shoot-through in half-bridge and three-phase inverter gate drivers. |
| Capacitive Touch Sensing | 24-channel TSC with hardware-accelerated acquisition and noise immunity - enables robust touchkey/rotary encoder UI without CPU overhead or external controller. |
| Low-Power Analog Subsystem | RTC with calendar alarm, VBAT backup registers, and 32 kHz LSE oscillator calibration - maintains timekeeping and critical state during Stop/Standby modes consuming <1 µA. |
| Robust Communication Interfaces | I2C Fast Mode Plus (1 Mbit/s, 20 mA sink), CAN 2.0B with loopback/self-test, and LIN-capable USART - ensures interoperability in noisy industrial networks. |
Applications
| Motor Control | Industrial HMI |
|---|---|
Use Scenario: Three-phase BLDC motor drive with sensorless commutation and overcurrent protection. IC Role / Device Role / Timing Role: Real-time FOC computation engine, ADC-synchronized PWM generator, and analog fault detector. Use Value: Integrated comparators trigger immediate PWM shutdown (<100 ns latency), while PGA-configured OPAMPs condition shunt voltage signals before ADC sampling. |
Use Scenario: Panel-mounted control interface with rotary encoder and touchkeys for parameter adjustment. IC Role / Device Role / Timing Role: Capacitive touch controller, encoder counter, and display communication hub via USART/I2C. Use Value: 24-channel TSC handles multi-touch and proximity detection simultaneously; built-in quadrature decoder offloads CPU from mechanical encoder debouncing. |
| Power Conversion | Medical Instrumentation |
Use Scenario: Digital-controlled DC-DC converter with adaptive voltage regulation and thermal monitoring. IC Role / Device Role / Timing Role: PID regulator core, temperature-compensated DAC reference source, and CAN telemetry transmitter. Use Value: Dual 12-bit DACs generate precise reference voltages for error amplifiers; CAN interface reports status and fault logs to central supervisory system. |
Use Scenario: Portable ECG front-end with lead-off detection and analog signal filtering. IC Role / Device Role / Timing Role: Low-noise analog signal conditioner, ADC data aggregator, and USB HID endpoint for PC connectivity. Use Value: Rail-to-rail comparators detect electrode disconnection; internal VREFINT and temperature sensor enable self-calibration without external components. |
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, 64 KB Flash, 16 KB SRAM, no DAC, only 2 ADCs | Suitable for cost-sensitive single-phase motor control without analog feedback complexity | Select when board space and BOM cost constrain require minimal footprint and reduced analog peripheral count. |
| STM32F334C8T6 | Same LQFP48 package, 64 KB Flash, adds high-resolution timer (HRTIM) and 16-bit sigma-delta ADC | Targeted at digital power supply control with >100 ps timing resolution and isolated current sensing | Prefer when ultra-precise PWM timing or isolated ADC channel count exceeds STM32F303CBT6TR capability. |
Compared with STM32F303K8T6, the STM32F303CBT6TR provides double Flash/SRAM and full analog subsystem (DACs, PGAs, 4 ADCs), making it suitable for complex motor control; versus STM32F334C8T6, it trades HRTIM precision for broader general-purpose analog integration and lower system-level component count.
Availability
STM32F303CBT6TR is available at Aetrix Electronics and suitable for motor control, industrial HMI, power conversion, and medical instrumentation requiring stable component supply and long-term production continuity.
Supply support for STM32F303CBT6TR 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 specializing in microcontrollers, power management, and analog/mixed-signal ICs for industrial, automotive, and consumer markets.
This device belongs to the STM32F3 series, designed specifically for cost-effective, high-precision analog-intensive embedded applications such as motor control, digital power supplies, and human-machine interfaces.
FAQ
What is the maximum operating frequency and supported voltage range for STM32F303CBT6TR?
The STM32F303CBT6TR operates at up to 72 MHz using its internal PLL and supports a VDD/VDDA supply range of 2.0 V to 3.6 V. It includes a programmable voltage detector (PVD) for brown-out detection and low-power modes (Sleep, Stop, Standby) with VBAT backup for RTC operation down to 1.65 V.
Does STM32F303CBT6TR support hardware CRC calculation and memory protection?
Yes, it integrates a dedicated CRC calculation unit compliant with IEEE-802.3 and a memory protection unit (MPU) supporting eight regions with configurable access permissions and attributes. These features enable secure firmware updates and runtime isolation of critical code/data sections in safety-critical applications.
How many analog-to-digital converters does STM32F303CBT6TR include, and what are their key capabilities?
It includes four independent 12-bit ADCs with conversion times as fast as 0.2 µs, selectable resolution (6/8/10/12 bits), and up to 39 input channels. Each ADC supports single-ended/differential input, separate analog supply (2.0–3.6 V), and hardware oversampling - enabling simultaneous current, voltage, and temperature sampling in motor control loops.
Can STM32F303CBT6TR be used for capacitive touch sensing, and what interfaces are available for system communication?
Yes, it integrates a 24-channel touch sensing controller (TSC) supporting touchkey, linear, and rotary sensors with hardware-accelerated acquisition and noise filtering. For system communication, it provides CAN 2.0B, five USART/UARTs (including LIN and IrDA), three SPIs (two with I2S), USB 2.0 full-speed, and two I2C interfaces with Fast Mode Plus (1 Mbit/s).
STM32F303CBT6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-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, USB
- Peripherals:
- DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 37
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 15x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F303CBT6TR FAQ
1.How can I place an order for STM32F303CBT6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F303CBT6TR 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 STM32F303CBT6TR reliable?
The price and inventory of STM32F303CBT6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F303CBT6TR is usually 5 days.
3.What payment methods are accepted for STM32F303CBT6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F303CBT6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F303CBT6TR?
STM32F303CBT6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F303CBT6TR 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 STM32F303CBT6TR?
For technical support, including STM32F303CBT6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F303CBT6TR requirements.
6.How does Aetrix verify that STM32F303CBT6TR is sourced from the original manufacturer or authorized distributors?
All STM32F303CBT6TR 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 STM32F303CBT6TR meets industry standards.
7.What is the process for return or replacement of STM32F303CBT6TR?
All STM32F303CBT6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F303CBT6TR, 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 STM32F303CBT6TR part is unused and in its original packaging.
Return procedure for STM32F303CBT6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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