Item specifics
Description
The STM32F207ZGT6 is a Cortex-M3 advanced performance MCU from STMicroelectronics in an LQFP-144 package. It runs at 120 MHz with ART Accelerator for zero-wait Flash execution. Integrated 1 MB 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). 114 I/Os (LQFP-144), all 5 V-tolerant. Supply 1.8–3.6 V, -40–85 °C, ECOPACK®2. Compared to the STM32F207ZET6 (512 KB Flash/128 KB SRAM), Flash is upgraded to 1 MB, meeting large firmware and complex algorithm requirements. Compared to the STM32F107ZGT6 (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: 1 MB 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: 114, all 5 V-tolerant Low Power: Sleep/Stop/Standby, VBAT backup RTC Package: LQFP-144 (20×20×1.4 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 1 MB Flash + 128 KB SRAM: High-capacity storage for large complex protocol stacks, graphical interfaces, and algorithms LQFP-144 Package: 114 I/Os with extremely rich resources for multi-peripheral connection Camera Interface (DCMI): Supports CMOS sensors for image capture applications 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 STM32F207ZGT6 and how does it fit in the STM32 family?
The STM32F207ZGT6 is a 120 MHz Arm Cortex‑M3 microcontroller with 1 MB Flash, 128 KB SRAM, a 10/100 Ethernet MAC, USB OTG, dual CAN, and an LQFP‑144 package. It was the first STM32 to combine a high‑speed 120 MHz Cortex‑M3 core with rich wired connectivity, bridging the gap between the basic F1 series and the more advanced F4 with FPU and DSP. It is designed for cost‑sensitive connected applications that need Ethernet and USB but can trade the FPU and camera interface of the F4 for a lower price.
How does the STM32F207ZGT6 compare to the classic STM32F107? Is it a direct upgrade?
The STM32F107 is also an Ethernet‑enabled Cortex‑M3, but runs at only 72 MHz. The F207ZGT6 doubles the CPU speed to 120 MHz, increases Flash from 256 KB to 1 MB, and expands SRAM from 64 KB to 128 KB. It adds a second CAN, a more flexible external memory controller, and a faster USB OTG module. The LQFP‑144 package is often layout‑compatible, allowing a smooth hardware migration with a significant performance and memory boost.
Why choose the STM32F207ZGT6 over the STM32F407ZGT6? What are the trade‑offs?
The STM32F407ZGT6 offers a 168 MHz Cortex‑M4 with FPU and DSP, plus a camera interface, but the F207ZGT6 costs less. If your application does not require floating‑point math, DSP acceleration, or a camera, and you simply need a fast, reliable MCU with Ethernet, USB, and CAN, the F207ZGT6 is a very attractive cost‑optimized alternative. It uses the same proven STM32 ecosystem and can be easily migrated to the F407 later if more processing power is needed.
Can the STM32F207ZGT6 handle Ethernet and USB at the same time? What about CAN?
Yes, the three major communication interfaces can run concurrently. The chip includes a 10/100 Ethernet MAC (MII/RMII), a USB OTG FS/HS controller (HS requires an external ULPI PHY), and two CAN 2.0B ports. With proper pin assignment in STM32CubeMX, you can route all of them simultaneously on the LQFP‑144 package without conflicts, making the chip a powerful industrial communication hub.
Is 128 KB of SRAM enough for a complex connected application with Ethernet and USB stacks?
Yes, it is sufficient for many proven designs. A typical system with a lightweight RTOS, an LwIP TCP/IP stack, a USB device stack, and moderate application buffers fits comfortably in 128 KB. If you need more RAM for data logging or large communication buffers, the chip’s flexible static memory controller (FSMC) allows you to connect external SRAM or PSRAM, providing a straightforward upgrade path.
What external memory can I connect to the STM32F207ZGT6? Does it support SDRAM?
The FSMC on the STM32F207 supports parallel NOR Flash, PSRAM, and NAND Flash, but does not support SDRAM. For SDRAM, you need to move to the STM32F407 series. However, you can easily add external PSRAM or connect a serial SPI Flash or SPI RAM for additional storage. The internal 1 MB Flash is usually enough for the application, and the FSMC is primarily used for external data buffers or a memory‑mapped display.
How does the STM32F207ZGT6 perform in low‑power applications compared to the STM32F1?
The F207ZGT6 is fabricated on a more advanced process than the F1, giving it better power efficiency at the same frequency. It supports Sleep, Stop, and Standby modes, with a typical Stop‑mode current of around 110 µA while retaining all 128 KB of SRAM. Its 120 MHz core allows faster task completion before returning to sleep, making it a good fit for battery‑powered devices that need periodic Ethernet or USB communication.
Can I use the STM32F207ZGT6 for USB high‑speed applications, or is it limited to full‑speed?
The chip provides a full‑speed USB OTG controller with an integrated PHY, and a separate high‑speed controller that works with an external ULPI PHY. This means you can implement USB HS devices or hosts, such as high‑speed data loggers or audio interfaces, by adding a ULPI transceiver. The 1 MB 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 STM32F207ZGT6's 1 MB single‑bank Flash?
The 1 MB Flash can be logically partitioned into a bootloader, an active application, and a download buffer, or split into two 512 KB slots for an A/B update scheme. The 128 KB SRAM can temporarily hold the new firmware received via Ethernet, USB, or an external SPI‑to‑Wi‑Fi module. A CRC or signature check ensures a safe update without hardware dual‑bank Flash.
What development tools and evaluation boards support the STM32F207ZGT6?
All major IDEs—free STM32CubeIDE, Keil MDK, and IAR EWARM—fully support the chip. While there is no dedicated Nucleo‑144 board for the F207, the STM3220G‑EVAL board or the NUCLEO‑F207ZG (if available) can be used for prototyping. The STM32CubeF2 firmware package provides HAL/LL drivers and ready‑to‑run examples for Ethernet, USB, CAN, and FSMC.