STM32G431VBT6 - 170MHz Cortex-M4F 128KB MCU | STMicroelectronics
Référence : STM32G431VBT6 ✓ ActifSTM32G431VBT6 Présentation
An Arm Cortex-M4F microcontroller is a 32-bit embedded processor based on the Arm Cortex-M4 architecture and includes a floating-point unit. Within the embedded-computing hierarchy, it provides substantially more arithmetic capability than a basic 8-bit or 16-bit microcontroller while retaining a deterministic real-time-control architecture. The STM32G4 family combines that processing core with analog conversion, comparison, amplification, and communications peripherals for compact control platforms.
Key device attributes include a 170 MHz operating frequency, 213 DMIPS as stated in the manufacturer data, 128 KB of Flash, 32 KB of SRAM, and an Arm Cortex-M4F core. The analog subsystem provides an ADC resolution of up to 16 bits with hardware oversampling and a 0 V to 3.6 V conversion range. Four DAC channels are divided between two buffered external channels operating at 1 MSPS and two unbuffered internal channels operating at 15 MSPS.
The mixed-signal architecture allows a design to acquire sensor inputs, compare thresholds, perform control-loop calculations, and generate analog outputs without relying on separate devices for every function. Four ultra-fast rail-to-rail analog comparators support fast threshold and protection tasks, while three operational amplifiers can be configured in PGA mode with terminals accessible to the application. The internal VREFBUF provides a buffered voltage-reference function for analog circuitry.
Typical uses include digital power conversion, motor-control systems, industrial acquisition modules, programmable signal sources, and compact embedded instruments. The ADC, DAC, comparators, and op-amps are particularly useful when a control board must combine digital computation with precision analog front-end functions. The 100-LQFP package also provides a generous pin count for external memory, communication interfaces, sensors, and actuator connections.
Designers should confirm every peripheral instance, alternate-function mapping, power pin, and board-level connectivity against the manufacturer pinout and reference manual. The STM32G431VBT6 combines substantial analog capability in one package, but correct decoupling, analog grounding, input-range planning, and firmware initialization remain essential for predictable performance.
Alternatives de remplacement direct pour STM32G431VBT6 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
STM32G431VCT6
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM32G431VET6
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM32G431VGT6
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM32G471VET6
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM32G491VET6
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM32G431VBT6 Valeurs maximales et caractéristiques électriques
| Product Type | 32-bit Arm Cortex-M4F microcontroller |
| Core | Arm Cortex-M4F |
| Fréquence d'horloge maximale | 170 MHz |
| Instruction Performance | 213 DMIPS |
| Flash Memory | 128 KB |
| SRAM | 32 KB |
| ADC Resolution | Up to 16 bits with hardware oversampling |
| ADC Conversion Voltage Range | 0 V to 3.6 V |
| DAC Channels | 4 channels |
| Buffered DAC Output Rate | 1 MSPS on 2 external channels |
| Unbuffered DAC Output Rate | 15 MSPS on 2 internal channels |
| Analog Comparators | 4 ultra-fast rail-to-rail comparators |
| Operational Amplifiers | 3 op-amps with PGA-mode support |
| Boîtier | 100-LQFP, 14 mm x 14 mm |
| Type de montage | Surface mount |
Guide de configuration des broches du STM32G431VBT6 100-lqfp, 14 mm x 14 mm
Configuration des broches du STM32G431VBT6 (boîtier 100-lqfp, 14 mm x 14 mm). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour STM32G431VBT6.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
STM32G431VBT6 convient pour 6 applications: Industrial Motor-Control Systems, Digital Power Conversion, Precision Data-Acquisition Modules, Programmable Analog Signal Sources, Condition Monitoring and Protection, USB-Connected Embedded Instruments.
Industrial Motor-Control Systems
The STM32G431VBT6 suits compact motor-control platforms because its 170 MHz Arm Cortex-M4F core executes real-time control calculations while the integrated analog resources support current sensing and protection. Four ultra-fast rail-to-rail comparators can monitor control signals, and three operational amplifiers can support PGA-mode signal conditioning. The 128 KB Flash and 32 KB SRAM provide dedicated space for control code and working data. Compared with a separated MCU-and-analog design, this integration reduces board area, but engineers must still verify comparator timing, op-amp stability, ADC synchronization, and thermal performance for the selected motor drive.
Recommandé
Digital Power Conversion
The STM32G431VBT6 is appropriate for digital power converters that require fast control loops, flexible analog sensing, and programmable output generation. Its 170 MHz Cortex-M4F core and 213 DMIPS performance provide substantial control-loop throughput, while the 12-bit DACs can generate reference or correction waveforms. The ADC supports conversion from 0 V to 3.6 V with hardware oversampling, enabling accurate acquisition of low-level feedback signals. Three op-amps and four rail-to-rail comparators can assist with signal conditioning and protection. Practical implementation requires careful partitioning of analog and digital grounding, compensation-network design, and verification of converter stability across input voltage and load.
Recommandé
Precision Data-Acquisition Modules
The STM32G431VBT6 fits precision acquisition modules where sensor signals must be measured, filtered, and exported without a separate analog processor. The ADC can resolve up to 16 bits with hardware oversampling over a 0 V to 3.6 V range, while the 170 MHz core handles digital filtering and communication tasks. Its 128 KB Flash supports calibration tables and control firmware, and 32 KB SRAM accommodates working buffers. Three accessible-terminal op-amps can amplify sensor outputs before conversion. The key design trade-off is that oversampling improves effective resolution but does not remove analog-noise, reference-drift, or aliasing concerns, so source impedance and filtering still require careful validation.
Recommandé
Programmable Analog Signal Sources
The STM32G431VBT6 can implement compact programmable analog signal sources because it combines four DAC channels with a 170 MHz digital controller. Two buffered external DAC channels operate at 1 MSPS, while two unbuffered internal channels operate at 15 MSPS. This split allows slower, externally observable waveforms to be generated from the buffered outputs while faster internal modulation uses the high-speed channels. Three op-amps and an internal VREFBUF extend the signal-conditioning options. Designers must account for DAC output impedance, output loading, reference accuracy, and reconstruction filtering; the 15 MSPS internal rating should not be interpreted as equivalent external waveform bandwidth.
Recommandé
Condition Monitoring and Protection
The STM32G431VBT6 is suitable for condition-monitoring equipment that compares sensor-derived signals against fast thresholds and performs local protection decisions. The four ultra-fast rail-to-rail comparators operate independently of the main CPU for rapid events, while the 170 MHz Cortex-M4F core records data, manages alarms, and reports status. Three op-amps can condition sensor signals, and the 32 KB SRAM can hold a rolling acquisition buffer. For machinery or energy systems, the MCU should be paired with an isolation interface rather than connected directly to hazardous signals. Firmware must include comparator debouncing, timeout behavior, fault logging, and safe output states so a firmware fault does not mask a hardware threshold event.
Recommandé
USB-Connected Embedded Instruments
The STM32G431VBT6 can serve as the control core in a compact USB-connected instrument that combines data acquisition, signal generation, and local processing. Its 128 KB Flash and 32 KB SRAM are sufficient for many embedded-control workloads, while the mixed-signal peripherals reduce the number of discrete components around the MCU. A dedicated USB bridge can provide a robust host interface without relying on the USB capabilities of the STM32G431VBT6 itself. Engineers should validate USB timing, ground references between analog and digital sections, DAC output filtering, and host-driver compatibility. The instrument enclosure and exposed analog interfaces also require appropriate ESD, overvoltage, and isolation protection beyond the MCU specifications.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour STM32G431VBT6 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | STM32G431VCT6 | STM32G431VET6 | STM32G431VGT6 | STM32G471VET6 | STM32G491VET6 |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 100-LQFP (14x14) | 100-LQFP (14x14) | 100-LQFP (14x14) | 100-LQFP (14x14) | 100-LQFP (14x14) | 100-LQFP (14x14) |
| Flash Memory | 128 KB | 256 KB | 512 KB | 1 MB | 512 KB | 512 KB |
Principaux différenciateurs
- Lower Flash requirement with the same mixed-signal integration (vs STM32G431VET6)
- Higher processing performance for real-time control (vs STM32G431VCT6)
- Compact integration of fast analog resources (vs STM32G491VET6)
Notes de conception
Verify all supply rails and decoupling requirements against the manufacturer datasheet before layout release because the supplied excerpts do not state the complete operating-voltage table. Place the device's required local capacitors at the associated power pins with very short return paths, and keep analog supply routing separate from digital switching currents where the architecture permits. The 3.6 V ADC range is a conversion specification, not a complete power-supply rating. Treat the internal VREFBUF as a reference buffer rather than assuming it can supply unlimited external load current.
Preserve the analog signal path as a continuous, compact structure. Route sensor inputs away from the Cortex-M4F clock, DAC outputs, and fast digital return currents; keep the analog ground reference close to the ADC, comparators, op-amps, and VREFBUF. For the four DAC channels, the two buffered external outputs at 1 MSPS should be followed by filtering appropriate to the intended waveform, while the 15 MSPS internal outputs should not be treated as equivalent high-bandwidth external drivers.
A substitute MCU must be checked at the peripheral and firmware level, not only by package and clock speed. Confirm every 100-LQFP pin, alternate function, power pin, exposed analog terminal, boot configuration, debug interface, and clock source. Also verify ADC trigger behavior, DAC buffer availability, comparator routing, and DMA-channel allocation. The STM32G431VBT6 provides 128 KB of Flash and 32 KB of SRAM, so a larger-memory family alternative may change startup code, linker placement, or firmware size assumptions even when the footprint remains unchanged.
Design filtering and acquisition timing around the actual source impedance and conversion time rather than relying only on the nominal 16-bit oversampling resolution. Hardware oversampling can improve effective resolution, but aliasing, reference noise, comparator chatter, and op-amp settling remain analog concerns. If a comparator drives protection logic, define hysteresis and an external safe state so an MCU reset or firmware failure does not create an unsafe actuator command.
Informations de conformité
The supplied verified records do not explicitly state the target device's compliance status. Third-party snippets referencing RoHS or REACH did not provide an unambiguous declaration, so no compliance claim has been assumed.