Item specifics
Description
The STM32F303VET6 is a Cortex-M4 mixed-signal MCU from STMicroelectronics in an LQFP-100 package. It runs at 72 MHz with FPU and ART Accelerator. It integrates 512 KB Flash, 80 KB SRAM, CAN 2.0B, USB 2.0 FS (crystal-less), 4×12-bit ADCs (40 channels, 0.2µs), 12-bit DAC (2ch), 7 ultra-fast comparators (25ns), 4 programmable op-amps (PGA), up to 13 timers (incl. 2 motor control PWM/deadtime), and up to 15 communication interfaces (3×USART/3×UART/3×SPI/I2S/2×I2C/USB/CAN). 82 I/Os (LQFP-100), all 5 V-tolerant. Supply 2.0–3.6 V, -40–85 °C. Compared to the STM32F303RET6 (LQFP-64, 51 I/Os), the package is upgraded to LQFP-100 with I/Os significantly increased to 82 and ADC channels increased from 18 to 40, making it ideal for complex applications requiring numerous I/Os and multi-channel analog front-ends. Compared to the STM32F303VCT6 (256 KB Flash/48 KB SRAM), both Flash and SRAM are upgraded to support larger firmware and more complex control algorithms.
Core: Arm Cortex-M4 72 MHz + FPU + ART Accelerator Memory: 512 KB Flash, 80 KB SRAM CAN 2.0B + USB 2.0 FS: Crystal-less USB, LPM and BCD support 4×12-bit ADCs: 40 channels, 0.2 µs, 0–3.6 V 12-bit DAC: 2 channels, buffered 7 Ultra-Fast Comparators: 25 ns 4 Programmable Op-Amps (PGA): Gain ×2/×4/×8/×16 Timers: 2× motor control PWM (deadtime/emergency stop), 3× 16-bit GP, 1× 32-bit GP, 2× watchdogs, SysTick Communication Interfaces: 3×USART + 3×UART (ISO7816/LIN/IrDA), 3×SPI/I2S, 2×I2C (SMBus), USB FS, CAN 2.0B I/Os: 82, all 5 V-tolerant Low Power: Sleep/Stop/Standby, VBAT backup RTC Package: LQFP-100 (14×14×1.4 mm)
Digital Power: SMPS, inverters, PFC Motor Control: Dual-motor FOC (2 advanced timers), BLDC/PMSM, fans, pumps Industrial Automation: CAN bus nodes, inverters Consumer: Game controllers, remote controls IoT Nodes Sensor Signal Conditioning
Cortex-M4 + FPU + Op-Amps/Comparators + CAN: Extremely high mixed-signal integration for digital power, motor control, and industrial communication LQFP-100 Package: 82 I/Os, up to 40 ADC channels, extremely rich resources 512 KB Flash + 80 KB SRAM: One of the largest memory capacities in this series within the LQFP-100 package, supporting complex algorithms and multi-protocol stacks 4 ADCs + 4 PGAs + 7 Comparators: Rich analog peripherals, no external op-amps/comparators needed, saves significant BOM Dual Advanced Timers: Supports dual-motor FOC 72 MHz FPU: Single-cycle DSP and floating-point operations Crystal-less USB + CAN 2.0B: Combines industrial bus and general communication ADC 0.2 µs Fast Conversion Mature STM32 Ecosystem: CubeIDE/CubeMX/HAL/LL
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FAQ:
What is the STM32F303VET6 and what are its standout features?
The STM32F303VET6 is a 72 MHz Arm Cortex‑M4F microcontroller with 512 KB Flash, 64 KB SRAM (including 16 KB of CCM), and a rich analog front‑end. It integrates four 12‑bit ADCs capable of up to 5 Msps, two 12‑bit DACs, seven fast analog comparators, and four programmable gain amplifiers (PGAs). This mixed‑signal powerhouse is designed for high‑speed motor control, digital power conversion, and sensor‑intensive industrial applications.
How does the STM32F303VET6 compare to the STM32F103VET6? Is it a good upgrade?
Yes, it is a substantial upgrade. The F303VET6 replaces the Cortex‑M3 core of the F103 with a Cortex‑M4F that adds a single‑precision FPU and DSP instructions. It also boosts the analog capability dramatically: the ADCs are much faster (5 Msps vs 1 Msps), adds DACs, PGAs, and high‑speed comparators. The Flash doubles to 512 KB and a 16 KB CCM memory block provides zero‑wait‑state access for real‑time data. The LQFP‑100 package often remains pin‑compatible, making a hardware migration straightforward with a significant performance and analog precision boost.
What makes the analog peripherals on the STM32F303VET6 special for motor control?
The chip is built with a complete motor‑control analog chain: four fast 12‑bit ADCs can simultaneously sample phase currents and DC‑link voltage, while the built‑in PGAs amplify the shunt‑resistor signals directly, eliminating external op‑amps. Seven ultra‑fast comparators provide cycle‑by‑cycle over‑current protection. Two advanced‑control timers generate complementary PWM with dead‑time insertion, making the F303VET6 ideal for field‑oriented control (FOC) of up to two motors.
How fast are the ADCs on the STM32F303VET6, and can they sample simultaneously?
The four 12‑bit ADCs can each reach 5 Msps, and in dual‑interleaved mode two ADCs can sample at up to 10 Msps. They support true simultaneous sampling across multiple channels, which is essential for accurate three‑phase current and voltage measurement in motor drives. The ADCs are tightly coupled to the timers, allowing precise triggering at the PWM center or edge without CPU intervention.
What is the CCM (Core Coupled Memory) on the STM32F303VET6 and how should I use it?
The 16 KB CCM is a block of SRAM directly connected to the CPU data bus, providing zero‑wait‑state access. It is perfect for the real‑time control stack, critical variables, and lookup tables that must be accessed with minimal latency. However, CCM cannot be accessed by DMA, so you should place DMA buffers in the regular 48 KB SRAM. Properly using CCM can shave cycles off your control loop and improve determinism.
Does the STM32F303VET6 support USB and CAN simultaneously? What about other communication interfaces?
Yes. The chip includes a full‑speed USB device controller with an integrated PHY and a CAN 2.0B interface. They can operate concurrently with multiple USART, SPI, and I2C ports. This makes the F303VET6 an excellent sensor‑hub or motor‑control node that communicates over CAN in an industrial network and over USB for configuration or data logging, all from a single chip.
How does the STM32F303VET6 differ from the STM32F373? When should I choose the F303?
Both share the same Cortex‑M4F core, but their analog focus is different. The F373 offers a 16‑bit sigma‑delta ADC for high‑resolution, low‑frequency measurements. The F303VET6 replaces that with multiple fast 5 Msps SAR ADCs and adds PGA, making it better suited for high‑speed applications such as motor control, digital power, and multi‑sensor data acquisition. Choose the F303 when you need speed and simultaneous sampling; pick the F373 when precision at low frequencies matters most.
Can the STM32F303VET6 be used for digital power supplies?
Yes. The combination of fast ADCs, high‑speed comparators, and advanced timers makes it well‑suited for digital power conversion. It can implement peak‑current‑mode control in buck or boost converters, digital PFC, and phase‑shifted full‑bridge controllers. The FPU and DSP instructions accelerate the control law computations, allowing high loop bandwidths even at 72 MHz.
What are the best motor control algorithms to implement on the STM32F303VET6?
The STM32F303VET6 is optimized for field‑oriented control (FOC) of PMSM and BLDC motors, both sensored and sensorless. The STM32 motor‑control software library (X‑CUBE‑MCSDK) fully supports this chip, offering ready‑to‑use FOC, six‑step, and advanced observer‑based sensorless algorithms. The integrated PGAs reduce the need for external current‑sensing amplifiers, simplifying the BOM and PCB layout.
What development tools and Nucleo boards are compatible with the STM32F303VET6?
All major IDEs—free STM32CubeIDE, Keil MDK, and IAR EWARM—fully support the chip. While there is no Nucleo‑144 board with the exact VET6, the NUCLEO‑F303ZE (144‑pin, 512 KB Flash) is fully software‑compatible and can be used for development. The STM32CubeF3 firmware package includes examples for ADCs, motor control, USB, and CAN, and the X‑CUBE‑MCSDK provides advanced motor‑control libraries.