STM32F207IET6 - 120MHz Cortex-M3 MCU with 512KB Flash | STMicroelectronics
MPN： STM32F207IET6 ✓ 啟用中STM32F207IET6 概覽
A microcontroller is a programmable system-on-chip that integrates a CPU core, Flash memory, SRAM, peripheral interfaces, timers, and analog conversion blocks into one component. In the product hierarchy, the STM32F207IET6 is a 32-bit embedded microcontroller, a Cortex-M3-based microcontroller, and an STMicroelectronics STM32 family device designed for connected industrial, communications, and embedded-control equipment.
Principal features include a 120 MHz ARM Cortex-M3 core, execution reaching 150 DMIPS or 1.25 DMIPS/MHz under Dhrystone 2.1 conditions, and an ART Accelerator that permits zero-wait-state execution from Flash memory. The device provides 512 KB of Flash, 132 KB of SRAM as reported for this package, and a hardware memory protection unit. Its communication resources include Ethernet, USB OTG high-speed and full-speed operation, camera connectivity, and multiple communication interfaces.
Three 12-bit ADCs, 17 timers, and 15 communication interfaces support motor-control, sensing, and real-time data acquisition designs. The STM32F2 architecture is suitable for applications requiring higher peripheral density than entry-level Cortex-M devices while retaining the familiar ARM Cortex-M programming model, exception architecture, and ecosystem of development tools.
Typical uses include industrial Ethernet controllers, USB-connected data acquisition equipment, camera-based inspection systems, networked embedded products, and industrial automation modules. The large 176-LQFP footprint exposes substantially more I/O than smaller microcontroller packages, making the device appropriate where parallel sensor inputs, actuator outputs, communications, and multiple analog channels must coexist on one board.
When laying out a board, treat all 176 package leads as a dense fine-pitch fanout and route decoupling close to the supply pins. Preserve the reference-design decoupling values, provide clean analog and digital return paths, and verify that the external crystal, memory, and interface networks match the manufacturer reference schematics. Firmware changes should also be validated because alternative Cortex-M devices can use different peripheral registers even when the package is physically interchangeable.
This page combines manufacturer-style technical specifications, verified package and memory details, drop-in candidate analysis, interface-specific application guidance, and practical design notes. It also distinguishes physical compatibility from software compatibility, an important consideration when selecting a second source for an STM32F2 design.
直接替換替代品，適用於 STM32F207IET6 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： STM32F207IET6 （相同外形與佔位） — 差異在於 Package, Maximum CPU Frequency, Mounting Type, Core, Number of I/O Pins.
STM32F207ICT6
✅ 直接替換📋 參考替代品（不在目錄中）
STM32F217IET6
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32F217IGT6
✅ 直接替換聯絡詢價
查看資料表 →STM32F745IET6
✅ 直接替換聯絡詢價
查看資料表 →STM32F207IET6 最大額定值與電氣特性
| Product Type | 32-bit ARM Cortex-M3 Microcontroller |
| Series | STM32F2 |
| Maximum CPU Frequency | 120 MHz |
| Core | ARM 32-bit Cortex-M3 |
| Program Memory Size | 512 KB (512K x 8) Flash |
| RAM Size | 132K x 8 |
| Number of I/O Pins | 140 |
| 封裝 | 176-LQFP (24x24) |
| 安裝類型 | Surface Mount |
| Performance | 150 DMIPS / 1.25 DMIPS/MHz |
| Benchmark | Dhrystone 2.1 |
| Flash Execution | 0-wait state with ART Accelerator |
| ADC Quantity | 3 |
| Timer Quantity | 17 |
| Communication Interfaces | 15 |
| Connectivity | Ethernet MAC, USB OTG HS/FS, camera interface |
| Memory Protection Unit | Yes |
| 供應電壓 | 2.5 V / 3.3 V |
STM32F207IET6 176-lqfp (24x24) 腳位配置指南
STM32F207IET6（176-lqfp (24x24) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： STM32F207IET6.
請參閱 資料表 以查看完整腳位配置。
典型應用
STM32F207IET6 適用於 6 應用s: Industrial Ethernet Control, USB Data Acquisition Equipment, Machine Vision and Inspection, Motor and Encoder Control, Connected Embedded Gateway, Multi-Channel Sensor Node.
Industrial Ethernet Control
The STM32F207IET6 fits industrial Ethernet controllers because it combines an integrated Ethernet MAC with a 120 MHz Cortex-M3 core and 17 timers. The 176-LQFP package exposes 140 I/O, leaving ample pins for digital inputs, encoder interfaces, discrete outputs, and status indicators. Ethernet and USB connectivity can share the same processor, while three ADCs support analog supervision. Follow the manufacturer reference schematic for the Ethernet PHY, magnetic-interface components, clock source, and decoupling.
推薦
USB Data Acquisition Equipment
USB OTG high-speed and full-speed support makes the STM32F207IET6 appropriate for connected measurement and laboratory equipment. Three ADCs can acquire analog sensor channels, while 17 timers support precise sampling intervals and motor or actuator timing. The 512 KB Flash and 132K x 8 RAM provide room for protocol stacks and buffering, and the ART Accelerator supports zero-wait-state Flash execution at the 120 MHz maximum clock. Validate USB impedance routing and power distribution early in the layout.
推薦
Machine Vision and Inspection
The camera interface and large I/O count suit machine-vision controllers, inspection equipment, and automated imaging systems. The 120 MHz Cortex-M3 core can coordinate image capture, sensor fusion, exposure timing, and actuator control, while Ethernet supports upstream transfer to a host or industrial network. With 140 I/O and a 176-LQFP footprint, the device also accommodates trigger inputs, encoder signals, and pneumatic or motorized axes. Validate camera timing, memory bandwidth, and connector placement in the reference design.
推薦
Motor and Encoder Control
Seventeen timers and 140 I/O make the STM32F207IET6 a strong controller for stepper, servo, or encoder-feedback systems. The high-performance timer resources support pulse-width modulation, input capture, and periodic control tasks, while three ADCs can monitor current or analog feedback channels. Ethernet or USB can provide configuration and diagnostics without slowing the real-time control loop. Keep control-loop timing deterministic by using timer-triggered sampling and carefully placed ground returns.
推薦
Connected Embedded Gateway
The STM32F207IET6 can serve as a compact communications gateway between local serial equipment and Ethernet or USB. Fifteen communication interfaces and 140 I/O allow several protocol ports to coexist, while the 512 KB Flash accommodates networking firmware and a 120 MHz core supports protocol processing. The STM32F2 memory-protection unit can isolate critical tasks or firmware regions. Use an isolated Ethernet path where the equipment crosses a high-noise industrial environment.
推薦
Multi-Channel Sensor Node
Three ADCs, numerous timers, and extensive GPIO allow the STM32F207IET6 to supervise multiple analog and digital sensor channels. It is useful for environmental monitoring, process instrumentation, and condition-monitoring nodes that must also forward measurements over Ethernet or USB. The 176-LQFP package provides enough pin access for channel multiplexing and isolated communications, while 132K x 8 RAM supports local buffering. Separate analog and digital return paths to limit converter noise in measured signals.
推薦
推薦產品摘要
工程參考資料，適用於 STM32F207IET6 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | STM32F207ICT6 | STM32F217IET6 | STM32F217IGT6 | STM32F745IET6 |
|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 176-LQFP (24x24) | 176-LQFP | 176-LQFP | 176-LQFP | 176-LQFP |
| Program Memory | 512 KB Flash | 512 KB Flash | Up to 1 MB Flash | 1 MB Flash | 512 KB Flash |
主要差異化特點
- Closest same-platform option with the same listed memory class and package footprint (對比STM32F207ICT6)
- Higher Flash capacity for expanded firmware (對比STM32F217IGT6)
- Higher processor generation with a larger I/O footprint (對比STM32F745IET6)
- Large I/O and analog resource count for mixed-signal equipment (對比STM32F207ICT6)
設計說明
The 176-LQFP footprint has a 0.5 mm lead pitch, so fanout routing and assembly inspection become the primary layout risks. Follow the manufacturer land pattern and keep decoupling capacitors adjacent to the corresponding supply pins rather than sharing distant bulk capacitance. Place the boot, debug, reset, and clock nets so they remain accessible for programming and production test.
Use separate return paths for analog and digital sections, especially around the three ADCs and Ethernet interface. Connect analog ground to the main ground plane at a controlled location, keep switching or Ethernet circuitry away from precision analog inputs, and follow the reference schematic for the analog supply filter. Validate crosstalk and ADC noise on the final multilayer board.
A matching package does not guarantee a drop-in firmware substitution. Before replacing the STM32F207IET6, compare the startup file, vector table, peripheral register map, clock tree, DMA channels, timer assignments, Ethernet and USB pin mapping, and peripheral library version. Also confirm that the alternative's supply pins, bootstrap settings, and exposed grounds satisfy its own datasheet.
The device supports 2.5 V and 3.3 V supply configurations, but the correct internal regulator, external decoupling, and analog reference arrangement must be copied from the manufacturer application circuit. Check the voltage applied to every I/O because directly connected external interfaces must not exceed the selected I/O voltage range.
合規資訊
The manufacturer datasheet and product page should be consulted for the authoritative declarations of substance, environmental, and automotive qualifications. This general-purpose STM32F2 microcontroller is not identified as an AEC-Q100 automotive-qualified device.
