Item specifics
Description
The STM32F207ZET6 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 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). 114 I/Os (LQFP-144), all 5 V-tolerant. Supply 1.8–3.6 V, -40–85 °C, ECOPACK®2. Compared to the STM32F207VET6 (LQFP-100, 82 I/Os), the package is upgraded to LQFP-144, significantly increasing I/Os to 114 for multi-peripheral connection needs. Compared to the STM32F107ZET6 (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: 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 512 KB Flash + 128 KB SRAM: High-capacity storage for complex protocol stacks 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 STM32F207ZET6 and how does it differ from the STM32F207ZGT6?
The STM32F207ZET6 is a 120 MHz Arm Cortex‑M3 microcontroller with 512 KB Flash and 128 KB SRAM, housed in an LQFP‑144 package. It integrates a 10/100 Ethernet MAC, USB OTG FS/HS, dual CAN, and a flexible static memory controller (FSMC). The only difference from the ZGT6 is the Flash size: the ZET6 provides 512 KB, while the ZGT6 doubles it to 1 MB. All other features—CPU speed, SRAM, peripherals, and pin‑out—are identical. Choose the ZET6 when your firmware comfortably fits within 512 KB and you want a more cost‑effective version of the same high‑performance connectivity MCU.
Is 512 KB of Flash enough for a complex connected application with Ethernet, USB, and CAN?
Absolutely. A typical setup with a lightweight RTOS, an LwIP TCP/IP stack, a USB device/host stack, and application logic fits easily in 400–480 KB, leaving headroom for custom features. Many industrial gateways, networked sensors, and CAN‑to‑Ethernet converters ship with exactly 512 KB. If your firmware later grows, the pin‑compatible STM32F207ZGT6 (1 MB) offers a direct drop‑in upgrade with no hardware changes.
How does the STM32F207ZET6 compare to the classic STM32F107 as an upgrade?
The STM32F107 is a 72 MHz Ethernet‑enabled Cortex‑M3 with only 256 KB Flash and 64 KB SRAM. The F207ZET6 doubles the CPU speed, Flash, and SRAM, adds a second CAN, a more flexible FSMC, and a faster USB OTG module. The LQFP‑144 package is often layout‑compatible, allowing a smooth hardware migration that dramatically boosts performance, memory, and connectivity without a major redesign.
Why choose the STM32F207ZET6 over the STM32F407ZET6? What are the trade‑offs?
The STM32F407ZET6 offers a 168 MHz Cortex‑M4 with FPU and DSP, plus a camera interface, but the F207ZET6 costs less. If your design 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 F207ZET6 is a very attractive cost‑optimized alternative. It shares the same 512 KB Flash and LQFP‑144 footprint, and can be migrated to the F407 later if more processing power is needed.
Can the STM32F207ZET6 run Ethernet, USB, and both CAN ports at the same time?
Yes. 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 careful pin allocation in STM32CubeMX, you can route all of them simultaneously on the LQFP‑144 package without conflicts, making the ZET6 a powerful industrial communication hub even in its entry‑level Flash configuration.
How can I expand the memory beyond the 128 KB of internal SRAM?
The flexible static memory controller (FSMC) allows you to connect external parallel NOR Flash, PSRAM, or NAND Flash. You cannot add SDRAM (that requires the STM32F407 series), but a fast 16‑bit PSRAM can provide additional buffer space for data logging or communication stacks. The 1 MB Flash on the ZGT6 is not needed if your code fits in 512 KB, so external parallel Flash is rarely required for code storage.
How does the STM32F207ZET6 perform in low‑power applications compared to the STM32F1?
Built on a more advanced process, the F207ZET6 is more power‑efficient than the F1 at the same clock speed. 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 can complete tasks faster and return to sleep, making it suitable for battery‑powered devices that wake periodically for Ethernet or USB communication.
Can the STM32F207ZET6 be used for USB high‑speed, 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 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 application code.
How can I implement 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 a 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 STM32F207ZET6?
All major IDEs—free STM32CubeIDE, Keil MDK, and IAR EWARM—fully support the chip. While there is no dedicated Nucleo‑144 board for this exact part, the STM3220G‑EVAL board or a 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.