STM32G474QET3 - 170MHz Cortex-M4F MCU | STMicroelectronics
MPN： STM32G474QET3 ✓ 啟用中STM32G474QET3 概覽
A microcontroller is a semiconductor that integrates a processor core, program memory, data memory, peripherals, and communication interfaces into one package. Within the embedded hierarchy, the STM32G474QET3 is a general-purpose MCU based on the Arm Cortex-M4F core. The F designation identifies the floating-point instruction capability, while the STM32G4 family is positioned for demanding control, monitoring, and real-time signal-processing applications.
The verified core characteristics are a 32-bit Arm Cortex-M4F architecture, operation up to 170 MHz, and 512 KB of Flash organized as 512 K x 8. The specified 128-LQFP package provides 128 physical leads on a 14 mm x 14 mm surface-mount footprint. The Hotenda product listing also identifies a 3 V device class, making the part suitable for conventional 3 V embedded systems when confirmed against the complete manufacturer datasheet.
The combination of a 170 MHz Cortex-M4F core and 512 KB Flash allows firmware to combine control logic with computationally intensive routines without immediately using external program memory. The large pin count can also provide more externally accessible device connections than lower-pin-count variants in the STM32G4 family. Exact peripheral assignments, GPIO alternate functions, memory-map details, electrical limits, and temperature limits must be checked against the STM32G474xB/xC/xE documentation before layout release.
Typical implementation areas include industrial monitoring and automation, digital power conversion, motor-control platforms, communication equipment, and embedded test systems. In these applications, the 170 MHz processing rate supports responsive real-time tasks, while 512 KB Flash provides room for application code, configuration data, and embedded protocol implementations. The 128-LQFP package is useful where a design requires numerous accessible I/O functions rather than the smallest possible footprint.
PCB planning should use the manufacturer land pattern and verify every 128-pin signal, power, ground, and termination connection. Decoupling should follow the datasheet guidance, and signal-routing decisions should preserve the required analog and digital partitioning. Because the verified data does not include the complete pin table, electrical limits, or peripheral mapping, engineers should not infer missing values from the distributor summaries.
This product record combines verified distributor specifications, current sourcing information, family-level replacement analysis, and engineering guidance that is not presented as a substitute for the complete STMicroelectronics reference manual, errata, and datasheet. It is intended to accelerate initial component selection while preserving clear boundaries around unverified technical details.
直接替換替代品，適用於 STM32G474QET3 — 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： STM32G474QET3 （相同外形與佔位） — 差異在於 Package, Supply Voltage.
STM32G474QET6
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →STM32G474QBT3
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32G474QCT3
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32G474QGT3
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32G474QDT3
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32G474QET3 最大額定值與電氣特性
| Product Type | 32-bit Microcontroller |
| Processor Core | Arm Cortex-M4F |
| Architecture | ARM 32-bit RISC |
| Word Size | 32 bit |
| 最大時脈頻率 | 170 MHz |
| Flash Memory | 512 KB |
| Flash Organization | 512 K x 8 |
| 供應電壓 | 3 V |
| 封裝 | 128-LQFP |
| Package Dimensions | 14 mm x 14 mm |
| 腳位數 | 128 pins |
| 安裝類型 | Surface Mount |
| Product Series | STM32G4 Series |
| Core Architecture | Arm Cortex-M4 32-bit RISC |
| Floating-Point Support | Cortex-M4F |
| Product Status | Active |
STM32G474QET3 14 mm x 14 mm 腳位配置指南
STM32G474QET3（14 mm x 14 mm 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： STM32G474QET3.
請參閱 資料表 以查看完整腳位配置。
典型應用
STM32G474QET3 適用於 6 應用s: Industrial Monitoring and Automation, Digital Power Conversion, Motor-Control Platforms, Communication Gateways, Portable Measurement Instruments, Embedded Test and Measurement.
Industrial Monitoring and Automation
The STM32G474QET3 fits industrial monitoring equipment that must combine real-time sampling with a substantial embedded control program. Its 170 MHz Arm Cortex-M4F core provides processing margin for sensor conditioning, filtering, state-machine execution, and communications, while 512 KB of Flash supports application firmware, calibration tables, and protocol data. The 128-LQFP package exposes a comparatively generous number of connections for external sensors, digital interfaces, and status or actuator signals. Before schematic capture, verify the exact GPIO alternate functions and peripheral assignment for the selected Q suffix.
推薦
Digital Power Conversion
The STM32G474QET3 is suitable for digital power-conversion control where fast computation, deterministic peripheral operation, and embedded firmware storage are important. The 170 MHz Cortex-M4F core can execute control loops and supervisory logic, while the 512 KB Flash budget accommodates compensation parameters, fault handling, communications, and update-oriented routines. Its 128-pin LQFP package provides a broad connection count for power-stage sensing, gate-driver control, and protection signals. The verified data does not specify PWM, ADC, or comparator ratings, so the complete electrical and timer documentation must be checked before assigning a power-conversion role.
推薦
Motor-Control Platforms
The STM32G474QET3 can serve as the central controller in a motor-control platform that combines real-time execution with a broad package interface. Its 170 MHz Arm Cortex-M4F core is appropriate for motion algorithms, current and speed-loop processing, and supervisory logic, and its 512 KB Flash provides space for control parameters and diagnostic code. The 128-LQFP package offers many potential connections for encoders, position sensors, phase signals, and protection feedback. Because timer-channel mapping and motor-control peripherals are absent from the supplied excerpts, pin-level suitability must be established using the official STM32G474 documentation.
推薦
Communication Gateways
The STM32G474QET3 is appropriate for a gateway that must translate between embedded protocols and a host interface. Its 170 MHz Cortex-M4F core handles packet processing and concurrent control tasks, while 512 KB of Flash can retain protocol stacks, configuration, and application firmware. The 128-lead LQFP package provides a high pin count for serial links, Ethernet PHY control, status indicators, and expansion interfaces. Exact UART, USB, and other communication-instance assignments are not present in the verified data and therefore require verification before schematic allocation.
推薦
Portable Measurement Instruments
The STM32G474QET3 can support a portable measurement instrument that combines responsive signal processing with extensive firmware. The 170 MHz Cortex-M4F core supports digital filtering, calibration routines, and user-interface logic, while the 512 KB Flash capacity accommodates measurement algorithms, menus, and stored configuration data. Its 128-LQFP package gives an instrument designer access to a larger I/O pool than a low-pin MCU, including display control, buttons, sensors, and communication links. Battery-aware designs should verify sleep currents, analog performance, and power sequencing because those values are not included in the supplied source excerpts.
推薦
Embedded Test and Measurement
The STM32G474QET3 fits embedded test equipment requiring a fast processor, programmable Flash, and numerous external connections. Its 170 MHz Cortex-M4F core can execute acquisition control, sequencing, analysis, and communications, while 512 KB Flash supports firmware images and embedded configurations. The 128-LQFP package provides a practical route to external converters, communication transceivers, and front-panel controls. Since the supplied information does not include the ADC specification, comparator performance, capture features, or DAC resources, each acquisition-channel assignment must be checked against the official product documentation.
推薦
推薦產品摘要
工程參考資料，適用於 STM32G474QET3 — 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 | STM32G474QET6 | STM32G474QBT3 | STM32G474QCT3 | STM32G474QGT3 | STM32G474QDT3 |
|---|---|---|---|---|---|---|
| Package | 128-LQFP (14x14) | 128-LQFP (14x14) | 128-LQFP (14x14) | 128-LQFP (14x14) | 128-LQFP (14x14) | 128-LQFP (14x14) |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Processor Core | Arm Cortex-M4F | Arm Cortex-M4F | Arm Cortex-M4F | Arm Cortex-M4F | Arm Cortex-M4F | Arm Cortex-M4F |
| Maximum Clock Frequency | 170 MHz | 170 MHz | 170 MHz | 170 MHz | 170 MHz | 170 MHz |
| Flash Memory | 512 KB | 512 KB | 512 KB | 512 KB | 512 KB | 512 KB |
| Architecture | 32-bit ARM RISC | 32-bit ARM RISC | 32-bit ARM RISC | 32-bit ARM RISC | 32-bit ARM RISC | 32-bit ARM RISC |
| Supply Voltage Class | 3 V | 3 V family | 3 V family | 3 V family | 3 V family | 3 V family |
| Variant Suffix | QET3 | QET6 | QBT3 | QCT3 | QGT3 | QDT3 |
主要差異化特點
- High-frequency processing with integrated floating-point architecture (對比STM32G474QBT3)
- Substantial integrated program memory (對比STM32G474QCT3)
- Same 128-lead footprint for controlled board reuse (對比STM32G474QET6)
設計說明
Use the official 128-LQFP land pattern rather than deriving it from the 14 mm x 14 mm body dimension alone. The supplied excerpts confirm the package family but do not provide the official drawing, pin table, exposed-pad treatment, or recommended land geometry. Confirm lead pitch, solder-mask clearance, paste stencil, and courtyard against the current STMicroelectronics package documentation before PCB release.
The verified 3 V device class supports a conventional 3 V power architecture, but the minimum and maximum supply limits are not present in the supplied data. Design the regulator with the complete datasheet voltage range, startup ramp requirements, and current limits included. Place the required bypass capacitors directly at the relevant supply pins and preserve separate return paths to minimize supply noise reaching the Cortex-M4F core.
Because the STM32G474QET3 exposes 128 pins in a 14 mm x 14 mm package, pin escape and via-in-pad feasibility should be assessed early. Use a fanout strategy that accommodates assembly inspection and rework, keep sensitive analog or communication routes away from switching nodes and high-current paths, and verify all alternate-function assignments against the exact QET3 ordering code before fixing the schematic.
Do not treat another STM32G474Q suffix as automatically interchangeable solely because it uses a 128-pin package. The B, C, D, E, and G device letters can select different peripheral populations or configurations, and the T3 versus T6 suffix changes grade information. Compare the ordering table, pinout, memory configuration, temperature range, and qualification requirements before approving a substitution.
合規資訊
The supplied verified excerpts do not provide authoritative compliance declarations for this exact ordering code. Compliance must be confirmed from the current STMicroelectronics product documentation or material-declaration records. The product is listed as active by the verified comparison result, but that status does not establish AEC-Q100 qualification.
