Item specifics
Description
The STM32F207VET6 is a Cortex-M3 advanced performance MCU from STMicroelectronics in an LQFP-100 package. It runs at 120 MHz with ART Accelerator for zero-wait Flash execution. Integrated 512 KB Flash, 128 KB SRAM, Ethernet 10/100 MAC (IEEE 1588 PTP hardware support, MII/RMII), USB 2.0 OTG (FS/HS), dual CAN 2.0B, SDIO, hardware crypto/HASH, camera interface (DCMI), 3×12-bit ADCs (16ch/2.4MSPS/triple sampling), 2×12-bit DACs, 16-stream DMA, up to 17 timers (incl. 2 motor control PWM/deadtime/emergency stop), and 15 communication interfaces (4×USART/2×UART/3×SPI/3×I2C/SDIO/USB/CAN). 82 I/Os (LQFP-100), all 5 V-tolerant. Supply 1.8–3.6 V, -40–85 °C, ECOPACK®2. Compared to the STM32F207VCT6 (256 KB Flash/128 KB SRAM), Flash is upgraded to 512 KB. Compared to the STM32F107VET6 (72 MHz Cortex-M3), core frequency is increased to 120 MHz, adding ART Accelerator, USB OTG HS, hardware crypto engine, camera interface, more ADC/DAC channels and timers.
Core: Arm Cortex-M3 120 MHz, ART Accelerator, 1.25 DMIPS/MHz Memory: 512 KB Flash, 128 KB SRAM, CRC 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 Dual CAN 2.0B: 512 bytes dedicated SRAM, 11 filters SDIO + HW Crypto: AES 128/192/256, 3DES, HASH (MD5, SHA-1), RNG Camera Interface: 8–14-bit parallel DCMI, supports CMOS sensors 3×12-bit ADCs: 16 channels, 2.4 MSPS (7.2 MSPS interleaved), triple sample-and-hold 2×12-bit DACs: Buffered DMA: 16 streams, memory-to-memory, peripheral-to-memory Timers: Up to 17 (2× motor control PWM/deadtime/emergency stop, 10× GP/quadrature encoder, 2× basic, 2× watchdogs, SysTick) Communication Interfaces: 4×USART + 2×UART (ISO7816/LIN/IrDA), 3×SPI (30 Mbit/s), 3×I2C (SMBus), 2×I2S, SDIO, USB OTG, CAN 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, dual CAN nodes, industrial Ethernet gateways Precision Clock Sync: IEEE 1588 PTP network time synchronization, smart grid Image Capture: Simple camera monitoring, barcode scanning, industrial vision Dual-Motor FOC Control: 2 advanced-control timers USB HS Communication, Audio Devices Security Applications: IoT security, payment terminals Medical & Handheld Devices Video Intercom, HVAC
120 MHz + ART Accelerator: Zero-wait Flash execution, performance close to Cortex-M4, far surpassing standard Cortex-M3 Ethernet MAC + USB OTG HS/FS + Dual CAN + Crypto Engine: Comprehensive communication features, rare configuration 512 KB Flash + 128 KB SRAM: Flash upgraded to 512 KB over VCT6 for large firmware and protocol stack requirements Camera Interface (DCMI): Supports CMOS sensors for image capture applications LQFP-100 Package: 82 I/Os with rich resources for multi-peripheral connection 3 ADCs (Triple Sampling) + 2 DACs: Comprehensive analog functions 17 Timers (incl. 2 Motor Control): Supports dual-motor FOC 15 Communication Interfaces: Rich resources Mature STM32 Ecosystem: CubeIDE/CubeMX/HAL/LL
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FAQ:
What is the STM32F207VET6 and how does it differ from the STM32F207ZET6?
The STM32F207VET6 is a 120 MHz Arm Cortex‑M3 microcontroller with 512 KB Flash and 128 KB SRAM, packed in an LQFP‑100 package. It includes a 10/100 Ethernet MAC, USB OTG FS/HS, dual CAN, and a flexible static memory controller (FSMC). The key difference from the ZET6 is the package: the VET6 uses an LQFP‑100 with up to 82 I/Os, while the ZET6 uses an LQFP‑144 with up to 114 I/Os. The core features, memory, and peripherals are identical. Choose the VET6 when you need the full STM32F207 connectivity in a smaller, cost‑saving footprint and can work within 82 I/Os.
Is 512 KB of Flash and 128 KB of SRAM enough for a real‑time OS, Ethernet, USB, and CAN stacks?
Absolutely. A lightweight RTOS, an LwIP TCP/IP stack, a USB device/host stack, and a CANopen protocol can all fit comfortably within 512 KB, leaving room for your application logic. The 128 KB SRAM is generous for communication buffers and real‑time data. Many industrial gateways, networked controllers, and CAN‑to‑Ethernet converters run on this exact memory configuration. If you later need more Flash, the pin‑compatible STM32F207VGT6 (1 MB) provides a direct upgrade with zero PCB changes.
How does the STM32F207VET6 compare to the classic STM32F107 as an upgrade? What do I gain?
The STM32F107 is also an Ethernet‑enabled Cortex‑M3, but runs at only 72 MHz and offers only 256 KB Flash and 64 KB SRAM. The F207VET6 doubles the CPU speed, Flash, and SRAM, adds a second CAN, a more capable FSMC, and a faster USB OTG controller. The LQFP‑100 package is often pin‑compatible with the F107, enabling a straightforward hardware migration that dramatically improves network throughput and application headroom.
Why pick the STM32F207VET6 over the STM32F407VET6? What are the trade‑offs?
The STM32F407VET6 offers a 168 MHz Cortex‑M4 with FPU and DSP, plus a camera interface, but the F207VET6 costs less. If your application does not need floating‑point math, DSP acceleration, or a camera, and you simply require a fast, reliable MCU for Ethernet, USB, and CAN, the F207VET6 is a very attractive cost‑optimized alternative. It keeps the same 512 KB Flash and compact LQFP‑100 footprint, and you can easily migrate to the F407 later if needed.
Can the STM32F207VET6 really handle Ethernet, USB, and both CAN ports at the same time in a 100‑pin package?
Yes, with careful pin planning. Using RMII for Ethernet (which uses fewer pins than MII) and an external ULPI PHY for USB HS if needed, you can allocate Ethernet, USB FS/HS, two CAN 2.0B ports, and several UART/SPI/I2C interfaces without conflicts. STM32CubeMX helps you verify the exact pin‑multiplexing. This makes the VET6 a powerful, compact communication hub for industrial devices.
How can I expand the memory beyond the 128 KB of internal SRAM on the STM32F207VET6?
The FSMC (Flexible Static Memory Controller) on the VET6 allows you to connect external parallel NOR Flash, PSRAM, or NAND Flash. It does not support SDRAM (that requires the STM32F407 series). On the 100‑pin package, the FSMC data bus is limited to 8‑ or 16‑bit width, but this is still sufficient for adding a fast PSRAM for data logging or communication buffers. The 512 KB internal Flash is usually enough for the application, so external parallel Flash is rarely needed for code storage.
What low‑power modes does the STM32F207VET6 support, and is it suitable for battery‑powered devices?
It supports Sleep, Stop, and Standby modes. In Stop mode with all 128 KB SRAM retained, the typical current is around 110 µA. The chip can wake up quickly on Ethernet, USB, or CAN activity. Its 120 MHz core can complete tasks faster and return to sleep, making it a good fit for battery‑powered industrial sensors and portable instruments that need periodic network communication.
Can I use the STM32F207VET6 for USB high‑speed, or is it limited to full‑speed?
The chip includes a full‑speed USB OTG controller with an integrated PHY, and a separate high‑speed controller that requires an external ULPI PHY. You can implement USB HS devices or hosts, such as high‑speed data loggers or audio interfaces, by adding a ULPI transceiver. The 512 KB Flash and 128 KB SRAM comfortably host a USB stack and the application code.
How can I perform over‑the‑air (OTA) firmware updates with the 512 KB single‑bank Flash?
The 512 KB Flash can be logically partitioned into a bootloader, an active application, and a download buffer. A typical split reserves 16–32 KB for the bootloader, leaving about 480 KB for the application. The 128 KB SRAM can temporarily buffer the new firmware image received via Ethernet, USB, or an external wireless module. A CRC or signature check ensures a safe update even without hardware dual‑bank Flash.
What development tools and evaluation boards support the STM32F207VET6?
All major IDEs—free STM32CubeIDE, Keil MDK, and IAR EWARM—fully support the chip. While there is no dedicated Nucleo board for this exact 100‑pin part, you can prototype on a NUCLEO‑F207ZG or STM3220G‑EVAL board (software‑compatible) and then migrate to the VET6 by adjusting the linker script and pin‑out in CubeMX. The STM32CubeF2 firmware package provides HAL/LL drivers and ready‑to‑run examples for Ethernet, USB, CAN, and FSMC.