STM32G431RBT3 - 170MHz Cortex-M4 MCU, 128KB Flash | STMicroelectronics
MPN： STM32G431RBT3 ✓ 啟用中STM32G431RBT3 概覽
An Arm Cortex-M4 microcontroller is a 32-bit reduced-instruction-set-computing core designed for embedded control, combining deterministic interrupt handling, single-precision floating-point capability, and a broad peripheral ecosystem. Within the product hierarchy, the STM32G4 series sits between general-purpose STM32 microcontrollers and dedicated motor-control devices, adding fast analog conversion, timers with advanced capture features, and hardware suited to power-conversion control loops.
The STM32G431RBT3 provides 128 KB of Flash for firmware storage and 32 KB of SRAM for working memory and data acquisition. Its maximum operating frequency is 170 MHz, while the specified operating-temperature range is -40 C to 125 C. The 64-LQFP 10 x 10 mm package supports compact industrial control boards and exposes the device's communication, timer, analog, and debug resources through a conventional leaded footprint.
The STM32G4 architecture is particularly suited to applications where control-loop computation must coexist with accurate analog measurement. The 12-bit ADC resources support current, voltage, and temperature feedback, while dedicated timer and math-accelerator features reduce the processing burden of digital power and motor-control algorithms. The 170 MHz Cortex-M4 core provides headroom for communications stacks, supervisory logic, and real-time control software.
Typical implementations include electric-motor controllers, digital power converters, industrial sensor-conditioning systems, and compact automation controllers. In these systems, the MCU can execute current-control and voltage-control loops while simultaneously managing external communications and safety monitoring. The LQFP package is particularly useful for prototypes, test fixtures, and industrial equipment where inspection and rework are easier than with fine-pitch packages.
When designing around the STM32G431RBT3, verify every analog input range, timer output, and alternate-function assignment against the pin-description tables in the manufacturer datasheet. Decoupling requirements, clock configuration, and exposed-pin assignments must follow the device reference manual and hardware-design guidance. Use the exact STM32G431RB device documentation when defining the board footprint and firmware package.
This page combines manufacturer device information, distributor availability records, package and memory details, drop-in family variants, comparison parameters, and practical design guidance. It is intended to help engineers qualify the STM32G431RBT3 for embedded industrial and motor-control designs before starting a new PCB layout or firmware port.
直接替換替代品，適用於 STM32G431RBT3 — 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： STM32G431RBT3 （相同外形與佔位） — 差異在於 Core, Package.
STM32G431RBT6
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →STM32G431RBT2
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32G431RBT4
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32G431RBT1
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32G431RBT3 最大額定值與電氣特性
| Product Type | 32-bit Arm Cortex-M4 microcontroller |
| Core | Arm Cortex-M4 with FPU |
| 最大時脈頻率 | 170 MHz |
| Flash Memory | 128 KB |
| Flash Organization | 128K x 8 bits |
| SRAM | 32 KB |
| ADC Resolution | 12 bits |
| Math Accelerator | Yes |
| 封裝 | 64-LQFP (10 x 10 mm) |
| 安裝類型 | Surface mount |
| 工作溫度 | -40 C to 125 C |
| 生命週期狀態 | Active |
| RoHS Compliance | Compliant |
| AEC-Q100 Qualification | Not applicable |
| Primary Applications | Motor control and industrial control |
| Program Memory Type | Internal Flash |
| CPU Architecture | 32-bit RISC |
STM32G431RBT3 64-lqfp (10 x 10 mm) 腳位配置指南
STM32G431RBT3（64-lqfp (10 x 10 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： STM32G431RBT3.
請參閱 資料表 以查看完整腳位配置。
典型應用
STM32G431RBT3 適用於 6 應用s: Electric Motor Control, Digital Power Conversion, Industrial Sensor Conditioning, Industrial Automation Controllers, Condition Monitoring Equipment, Rapid-Control Prototyping.
Electric Motor Control
The STM32G431RBT3 is suitable for field-oriented motor control because its 170 MHz Cortex-M4 core can execute current and speed loops while the 12-bit ADC measures phase currents and bus voltage. Its hardware math accelerator assists with trigonometric and transform operations that would otherwise consume substantial processor time. The 64-LQFP footprint also exposes the timer, analog, and communication resources needed for a compact industrial drive. Validate PWM complementary outputs, emergency shutdown behavior, and analog scaling in the exact pin configuration.
推薦
Digital Power Conversion
The STM32G431RBT3 can serve as the digital controller in a buck, boost, or bidirectional power stage. Its 170 MHz Cortex-M4 core provides processing headroom for compensation loops, while the 12-bit ADC supports output-voltage and inductor-current feedback. The hardware math accelerator is valuable for control calculations, and the SRAM allows current samples, filter state, and control variables to be handled without external memory. Board design should isolate analog inputs carefully and verify high-speed timer routing before layout release.
推薦
Industrial Sensor Conditioning
The STM32G431RBT3 is appropriate for industrial measurement modules that combine analog acquisition with real-time filtering and control. Its 12-bit ADC can digitize sensor outputs, and the 32 KB SRAM is sufficient for acquisition buffers and intermediate filter state. The 170 MHz core can run background diagnostics alongside the measurement loop, and the operating-temperature range of -40 C to 125 C supports demanding industrial environments. Confirm the analog input count, reference voltage, and calibration requirements against the package pin assignments.
推薦
Industrial Automation Controllers
The STM32G431RBT3 can serve as the central controller in a compact automation module that must handle discrete I/O, analog monitoring, and a communications protocol. Its 170 MHz Cortex-M4 core has ample capacity for protocol stacks and supervisory logic, while 128 KB of Flash accommodates firmware, drivers, and configuration data. The 32 KB SRAM supports task stacks and communication buffers. Use the manufacturer pin and alternate-function tables to confirm that the selected LQFP routing exposes every required interface.
推薦
Condition Monitoring Equipment
The STM32G431RBT3 is useful in vibration, current, or temperature monitoring systems where acquisition and signal analysis must run concurrently. The 12-bit ADC provides the sampling interface, and the 170 MHz core supports digital filtering, feature extraction, and threshold evaluation. The hardware math accelerator can reduce the computational load associated with transforms and complex filters. Its 64-LQFP package is also convenient for industrial test equipment that may require rework or through-hole assembly of peripheral components.
推薦
Rapid-Control Prototyping
The STM32G431RBT3 supports rapid-control prototyping because it combines a 170 MHz control processor, 12-bit ADC, and 128 KB of Flash on a widely inspectable 64-LQFP package. Engineers can implement current-mode or voltage-mode control loops, expose the results over a serial interface, and revise algorithms without changing the board footprint. The package lead pitch simplifies rework on prototypes and low-volume builds. Final validation should include thermal measurements at the intended switching rate and worst-case ambient temperature.
推薦
工程參考資料，適用於 STM32G431RBT3 — 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 | STM32G431RBT6 | STM32G431RBT2 | STM32G431RBT4 | STM32G431RBT1 |
|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 64-LQFP (10 x 10 mm) | 64-LQFP (10 x 10 mm) | 64-LQFP (10 x 10 mm) | 64-LQFP (10 x 10 mm) | 64-LQFP (10 x 10 mm) |
| CPU Core | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU |
| Maximum Clock Frequency | 170 MHz | 170 MHz | 170 MHz | 170 MHz | 170 MHz |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| ADC Resolution | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits |
| Math Accelerator | Yes | Yes | Yes | Yes | Yes |
主要差異化特點
- High-performance control processing with dedicated math hardware (對比STM32G431RBT2)
- Industrial temperature capability for harsh operating environments (對比STM32G431RBT1)
- Same-package family transition without footprint redesign (對比STM32G431RBT6)
- Balanced embedded memory for real-time control firmware (對比STM32G431RBT4)
設計說明
Use the manufacturer STM32G431RB land-pattern, solder-mask, and paste documents for the 64-LQFP 10 x 10 mm footprint. Place all decoupling capacitors at their associated supply pins with the shortest possible current loops, and keep analog inputs away from high-current switching nodes. Because many pins have multiplexed functions, freeze the pin-assignment spreadsheet before routing and verify each alternate function in the official pin-description table.
Budget analog and digital supply rails independently according to the STM32G431RB hardware guidance. Estimated: the MCU dissipation depends on VDD, clock activity, and enabled peripherals, so calculate P approximately as the sum of core and peripheral currents multiplied by their respective supply voltages. Verify startup current, regulator stability, and transient response rather than relying only on average operating current. Provide local bulk capacitance and a controlled power-up ramp where the analog section requires it.
Do not treat pin compatibility alone as proof of a drop-in replacement. The STM32G431RBT6 and other RBT-family order codes share the footprint and core configuration, but the temperature grade, packing suffix, qualification expectations, and supply status must match the product requirement. For cross-manufacturer substitutes, recheck clock pins, debug access, analog-reference routing, timer channels, and firmware startup before approving a substitution.
For motor-control and digital-power designs, separate the sensitive analog path from gate-drive and power-switching nodes, use a solid ground plane, and provide a defined analog reference with local filtering. Keep the high-current return path out of the analog ground region and use the recommended star or split-plane arrangement from the application guidance. Validate sampling behavior with an oscilloscope before trusting firmware filtering to remove coupled switching noise.
合規資訊
RoHS3 compliance and active lifecycle status are reported for this part. REACH, moisture sensitivity level, lead-free status, and conflict-minerals status are not established by the available manufacturer and distributor records.
