Item specifics
Description
The STM32F407VET6 is a Cortex-M4 high-performance MCU from STMicroelectronics in an LQFP-100 package. It runs at 168 MHz with FPU and ART Accelerator. It integrates 512 KB Flash, 192 KB SRAM, Ethernet 10/100 MAC (IEEE 1588 PTP, MII/RMII), USB 2.0 OTG (FS/HS, FS on-chip PHY), camera interface (DCMI), hardware crypto/HASH processor, two 12-bit DACs, three 12-bit ADCs (24ch, up to 7.2 MSPS in triple-interleaved mode), up to 17 timers (incl. 2 advanced motor control PWM/deadtime). 82 I/Os, all 5 V-tolerant. Supply 1.8–3.6 V, -40–85 °C. Compared to the STM32F407VGT6 (1 MB Flash), this model features 512 KB Flash while retaining identical SRAM and all other core peripherals, making it a cost-effective choice for Ethernet and DCMI applications. Compared to the STM32F401RET6 (84 MHz Cortex-M4), it doubles the core frequency, significantly upgrades memory and peripherals, and adds advanced features including Ethernet, DCMI, and a crypto engine.
Core: Arm Cortex-M4 168 MHz + FPU + ART Accelerator Memory: 512 KB Flash, 192 KB SRAM (incl. 64 KB CCM) Ethernet MAC: 10/100 Mbit/s, IEEE 1588 PTP hardware support, MII/RMII USB 2.0 OTG: FS + HS, FS on-chip PHY, HS requires external ULPI SDIO + HW Crypto: SD/MMC interface; AES 128/192/256, 3DES, HASH (MD5, SHA-1), RNG Camera Interface: 8–14-bit parallel DCMI 3×12-bit ADCs: 24 channels, 2.4 MSPS (up to 7.2 MSPS in triple-interleaved mode) 2×12-bit DACs: Buffered output Timers: Up to 17 (2× motor control PWM/deadtime/emergency stop, 12× 16-bit GP/quadrature encoder, 2× basic, 2× watchdogs, SysTick) Communication Interfaces: 4×USART + 2×UART (ISO7816/LIN/IrDA), 3×SPI (30 Mbit/s), 2×I2S, 3×I2C (SMBus), USB OTG, SDIO, Ethernet I/Os: 82, all 5 V-tolerant Low Power: Sleep/Stop/Standby, VBAT backup RTC Package: LQFP-100 (14×14×1.4 mm)
Industrial: PLCs, inverters, precision motor drives, industrial Ethernet gateways Motor Control: Dual-motor FOC, servo drives, pumps Image Capture: Simple camera monitoring, barcode scanning, industrial vision Network Communication: Ethernet control nodes, IoT gateways Consumer: Drone flight controllers, game controllers, high-end remote controls Security Applications: IoT security, payment terminals Portable Medical Devices
168 MHz Cortex-M4 + FPU: Strongest performance in this series for complex DSP and floating-point operations 192 KB SRAM + 512 KB Flash: Ample SRAM (identical to VGT6) for large data processing; cost-effective Flash configuration Ethernet + DCMI + Crypto Engine: Network communication, image capture, and data security in a 100-pin package Dual DACs + 3 ADCs: Comprehensive analog functions with multi-channel synchronous acquisition 17 Timers (incl. 2 Motor Control): Supports dual-motor FOC Mature STM32 Ecosystem: CubeIDE/CubeMX/HAL/LL
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FAQ:
What is the STM32F407VET6 and how does it differ from the STM32F407VGT6?
The STM32F407VET6 is a 168 MHz Arm Cortex‑M4F microcontroller with 512 KB Flash, 192 KB SRAM, a DCMI camera interface, a 10/100 Ethernet MAC, USB OTG HS/FS, dual CAN, and an FMC supporting SDRAM, all in an LQFP‑100 package. The only difference from the VGT6 is Flash size: the VET6 has 512 KB while the VGT6 offers 1 MB. All other features—CPU speed, SRAM, peripherals, and pin‑out—are identical. Choose the VET6 when your firmware fits within 512 KB and you want a cost‑optimised entry into the F407 line with the same I/O and connectivity.
Is 512 KB of Flash enough for a real‑time OS, Ethernet, and a camera application?
Yes. A typical design with FreeRTOS, LwIP, a USB device stack, a DCMI camera driver, and basic image processing easily fits within 400–480 KB, leaving room for application code. Many industrial IP cameras, networked sensors, and Ethernet‑to‑CAN gateways operate comfortably with 512 KB of Flash. If your code outgrows this limit, the pin‑compatible VGT6 (1 MB) provides a direct drop‑in upgrade.
How does the STM32F407VET6 compare with the STM32F407ZET6? When should I pick the 100‑pin version?
The ZET6 is the 144‑pin LQFP variant with the same 512 KB Flash and 192 KB SRAM, but it offers more I/Os (114 vs 82). The VET6 packs the same core, memory, and all major peripherals into a smaller footprint. Choose the VET6 when board space is tight and 82 I/Os are sufficient. The ZET6 gives you extra I/Os for a full 32‑bit SDRAM, more UART/SPI/I2C, and easier routing when using both Ethernet and camera.
Can the STM32F407VET6 really run a camera, Ethernet, and USB high‑speed at the same time in a 100‑pin package?
Yes, with careful pin planning. Using RMII for Ethernet (instead of MII) and an external ULPI PHY for USB HS, you can allocate an 8‑bit DCMI camera, RMII Ethernet, USB HS, dual CAN, and several UART/SPI/I2C interfaces without conflicts. STM32CubeMX is essential for verifying the exact pin‑multiplexing. This makes the VET6 a powerful single‑chip solution for compact networked cameras and gateways.
How much external SDRAM can I connect to the STM32F407VET6?
The flexible memory controller (FMC) on the 100‑pin package supports SDRAM, but the data bus width is limited to 8‑ or 16‑bit due to the reduced number of I/Os. You can connect a 16‑bit wide SDRAM for frame buffers or data logging, and still have pins for other functions. For a full 32‑bit SDRAM interface, the 144‑pin ZET6 is needed. The VET6 is a good fit for moderate‑resolution camera applications where a 16‑bit SDRAM provides sufficient bandwidth.
How does the STM32F407VET6 compare with the STM32F405? Why choose the F407?
The STM32F405 lacks the Ethernet MAC and DCMI camera interface, while the F407VET6 includes both. They share the same CPU, memory size, and most other peripherals. Choose the F407VET6 when your design needs wired networking or a parallel camera input. If those interfaces are not required, the F405 can be a more cost‑sensitive alternative with the same core performance.
Can I upgrade from an STM32F103 or STM32F2 design to the STM32F407VET6? What benefits will I see?
Yes, it is a common migration path. The F407VET6 offers a much higher CPU clock (168 MHz vs 72 MHz for the F103), a single‑precision FPU with DSP instructions, Ethernet, USB HS, a DCMI camera, and larger SRAM (192 KB). The LQFP‑100 package is often pin‑compatible with high‑end F103 and F2 designs, enabling a smooth hardware upgrade. Existing HAL code can be reused with minimal changes.
How can I implement over‑the‑air (OTA) firmware updates on the STM32F407VET6 with only 512 KB of single‑bank Flash?
The 512 KB Flash can be partitioned into a bootloader, an active application, and a download buffer. A typical split reserves 16–32 KB for the bootloader, leaving 480 KB for the application. The 192 KB SRAM can temporarily buffer the new firmware during reception via Ethernet or USB. Alternatively, an A/B scheme with two 240 KB slots can be used. Signature verification ensures a safe update even without dual‑bank Flash.
What low‑power modes does the STM32F407VET6 support, and can it be used in battery‑powered designs?
It supports Sleep, Stop, and Standby modes. In Stop mode with full SRAM retention, typical current is about 110 µA. The chip can wake up quickly on Ethernet, USB, or external interrupts. Together with its FPU and DSP capabilities, it works well in battery‑powered industrial sensors and portable instruments that sleep most of the time and wake only to process and transmit data.
What are the most typical applications for the STM32F407VET6, given its 512 KB Flash and 100‑pin package?
It excels in compact IP cameras, networked industrial sensors, Ethernet‑to‑CAN gateways, USB‑host data loggers, building automation controllers, and motor drives with network connectivity. The combination of 512 KB Flash, 192 KB SRAM, a camera interface, Ethernet, and a hand‑solderable LQFP‑100 package makes it a well‑balanced, production‑ready platform for many professional embedded systems where board space is at a premium.