Item specifics
Description
The STM32F411VCT6 is a Cortex-M4 dynamic efficiency MCU from STMicroelectronics in an LQFP-100 package. It runs at 100 MHz with FPU and ART Accelerator. It integrates 256 KB Flash, 128 KB SRAM, USB 2.0 OTG (FS), SDIO, 5 SPIs, 3 USARTs, 3 I2Cs, BAM batch acquisition mode, up to 11 timers (incl. 1 motor control PWM/deadtime), and a 12-bit ADC (10ch, 2.4MSPS). 81 I/Os, all 5 V-tolerant. Supply 1.7–3.6 V, -40–85 °C. Compared to the STM32F411RET6 (LQFP-64, 512 KB Flash), this model features 256 KB Flash but upgrades to an LQFP-100 package with richer I/O resources, making it ideal for applications requiring numerous I/Os. Compared to the STM32F103VCT6 (Cortex-M3, 72 MHz, 256 KB Flash, 48 KB SRAM), it upgrades to a Cortex-M4 core with FPU, offers higher frequency, doubles the SRAM, and adds USB OTG and SDIO, delivering an overall improvement in performance and connectivity.
Core: Arm Cortex-M4 100 MHz + FPU + ART Accelerator Memory: 256 KB Flash, 128 KB SRAM USB 2.0 OTG: FS, supports Device/Host/OTG SDIO: SD/MMC card interface support BAM: Batch Acquisition Mode for low-power batch sensor data reading 12-bit ADC: 10 channels, 2.4 MSPS (up to 7.2 MSPS interleaved) Timers: 1× motor control PWM (deadtime/emergency stop), 6× 16-bit GP (incl. 2 quadrature encoders), 2× watchdogs, SysTick Communication Interfaces: 3×USART (ISO7816/LIN/IrDA), 5×SPI/I2S, 3×I2C (SMBus), USB OTG, SDIO I/Os: 81, all 5 V-tolerant Low Power: Sleep/Stop/Standby, VBAT backup RTC, BAM mode Package: LQFP-100 (14×14×1.4 mm)
Industrial: Sensor transmitters, data acquisition nodes, PLCs Motor Control: BLDC/PMSM FOC, fans, pumps Consumer: Game controllers, remote controls, drone flight controllers IoT Nodes USB OTG/SDIO Storage Applications High-Performance Upgrades from Legacy 8/16-bit MCUs
Cortex-M4 + FPU + ART Accelerator: 100 MHz high performance with DSP and floating-point support 128 KB SRAM + 256 KB Flash: Ample memory, SRAM is 2.7x that of the F103VCT6 BAM Batch Acquisition Mode: Low-power batch sensor data reading, optimized battery life USB OTG + SDIO: USB communication and SD card storage LQFP-100 Package: 81 I/Os, rich resources for applications requiring numerous I/Os 12-bit ADC 2.4 MSPS Fast Conversion Mature STM32 Ecosystem: CubeIDE/CubeMX/HAL/LL
Years of experience in the electronics industry. Trusted by global customers.
Massive In-Stock Inventory – Ready to ship promptly.
BOM Matching Service – One-stop solution, save time.
PCBA Customization – Professional engineering team creates tailor-made solutions based on your needs.
Cost-Effective & Efficient – Better channel, better cost.
A dedicated team makes your procurement smoother.
Contact us for BOM quotes or PCBA inquiries.
FAQ:
What is the STM32F411VCT6 and how does it differ from the STM32F411VET6?
The STM32F411VCT6 is a 100 MHz Cortex‑M4F microcontroller with 256 KB Flash and 128 KB SRAM in an LQFP‑100 package. It is the 256 KB Flash variant of the STM32F411 line, while the VET6 offers 512 KB. All other features—CPU speed, SRAM, USB OTG with integrated PHY, 5 SPI, 3 I2C, 3 USART, and DSP/FPU—are identical. Choose the VCT6 when your firmware fits within 256 KB, giving you a cost‑optimised entry into the F411 family without sacrificing any peripheral or I/O capability.
Is 256 KB of Flash enough for a real‑time OS and USB device stack? What applications fit in this space?
Absolutely. Many proven embedded designs—sensor hubs, USB audio interfaces, portable data loggers, and motor controllers—run comfortably in 256 KB. A lightweight RTOS, a USB device stack, and application logic typically occupy 150–220 KB, leaving room for additional features. If your code base grows later, the pin‑compatible VET6 (512 KB) provides a direct upgrade path with zero hardware changes.
How does the STM32F411VCT6 compare with the STM32F401VCT6? Why upgrade to the F411?
Both have 256 KB Flash and an LQFP‑100 package, but the STM32F411 adds significant improvements: the CPU clock rises from 84 MHz to 100 MHz, an extra SPI and USART are available, and the power consumption in Stop mode is lower. The F411 also supports up to 5 SPI ports and offers a more flexible memory interface. Migrating from the F401 gives you a ~20% processing boost and better low‑power performance without increasing board space.
What advantages does the STM32F411VCT6 have over the classic STM32F407VCT6?
The STM32F407VCT6 runs at 168 MHz and adds an Ethernet MAC and a DCMI camera interface, but the F411VCT6 is far more power‑efficient. It draws significantly less current in Run and Stop modes, while still delivering the same Cortex‑M4 DSP and FPU. If Ethernet and camera are not required, the F411 provides a modern, low‑power alternative that shares the same LQFP‑100 footprint and many compatible HAL libraries.
Does the STM32F411VCT6 include a USB controller? Can it be used for USB audio or a virtual COM port?
Yes. It features a full‑speed USB OTG controller with an integrated PHY. You can implement USB audio streaming, CDC virtual COM ports, HID keyboards, or mass‑storage devices without any external transceiver. The 256 KB Flash holds the USB stack and application code, and the 128 KB SRAM provides enough buffering for isochronous audio data or file transfers.
What is the maximum number of I/O pins and serial interfaces on the STM32F411VCT6?
The LQFP‑100 package provides up to 81 I/Os. You can simultaneously configure up to 5 SPI, 3 I2C, 3 USART, and the USB OTG interface without pin conflicts. The SDIO port can also be used alongside most of these interfaces. STM32CubeMX helps you verify the exact pin‑multiplexing for your design.
How low can the power consumption go on the STM32F411VCT6, and what low‑power modes are available?
It supports Sleep, Stop, and Standby modes. In Stop mode with the main regulator off and full SRAM retention, typical current is around 100 µA. A separate VBAT domain keeps the real‑time clock and backup registers alive with just a few hundred nanoamps. The chip can wake up quickly on an external interrupt or USB activity, making it perfect for duty‑cycled, battery‑powered devices.
Can the STM32F411VCT6 handle digital signal processing or motor control algorithms?
Absolutely. The Cortex‑M4F core with single‑precision FPU and DSP instructions (single‑cycle MAC, SIMD) excels at digital filters, FFTs, and PID control loops. Advanced‑control timers with complementary PWM outputs and dead‑time insertion make it suitable for single‑axis motor drives, digital power supplies, and sensorless FOC. The 256 KB Flash is sufficient for all these control libraries.
What development tools and evaluation boards are available for the STM32F411VCT6?
All major IDEs—free STM32CubeIDE, Keil MDK, and IAR EWARM—fully support the chip. For prototyping, the NUCLEO‑F411RE board (64‑pin, same family) is an excellent starting point; its firmware can be easily re‑targeted to the VCT6 by adjusting the linker script and pin configuration in CubeMX. The STM32CubeF4 package provides ready‑to‑run examples for all peripherals.
What are the most typical applications for the STM32F411VCT6, given its 256 KB Flash and power efficiency?
It is ideal for battery‑powered IoT sensor nodes, wearable health devices, portable data loggers, USB‑connected instruments, compact motor controllers, and any space‑constrained design that needs a power‑saving M4 core with DSP muscle, plenty of I/O, and a USB interface, all in an easy‑to‑solder LQFP‑100 package.