STM32G431KBU6 - 170MHz Cortex-M4F MCU | STMicroelectronics
N.º da peça: STM32G431KBU6 ✓ AtivoSTM32G431KBU6 Visão geral
A microcontroller is a programmable system-on-chip that integrates a processor core, nonvolatile program memory, volatile working memory, and peripherals into one compact device. The STM32G4 product family combines an Arm Cortex-M4 processor with mixed-signal and control capabilities suited to industrial equipment, motor-control systems, power conversion, communications, and embedded consumer products. The UFQFPN package also supports surface-mount assembly on space-constrained boards.
The verified product information identifies the STM32G431KBU6 as a 32-bit Cortex-M4F device with 170 MHz maximum operating frequency, 128 KB Flash, and 32 KB SRAM. Its 213 DMIPS figure reflects the high-performance positioning of the Cortex-M4 core. The 12-bit conversion feature shown in distributor data further indicates suitability for systems that require embedded analog measurement alongside general-purpose digital control.
The 32-pin UFQFPN package is a key implementation constraint. Compared with larger leaded packages, it reduces board area while requiring careful PCB layout, stencil design, and reflow control. The 5 x 5 mm footprint is particularly useful in compact motor controllers, digital power modules, industrial sensing nodes, and communication equipment where connector placement and component density limit the available routing area.
Typical applications include digital motor control, power-supply monitoring, industrial sensor nodes, compact instrumentation, and communications-enabled embedded equipment. The combination of 170 MHz processing performance, 128 KB Flash, and 32 KB SRAM allows firmware to combine control loops with protocol handling and data acquisition. Designers should confirm the exact peripheral assignments, electrical limits, pin multiplexing, and clock configuration required by the selected board before release.
A critical design consideration is PCB compatibility. The UFQFPN package provides fine-pitch leads and an exposed thermal area, so the land pattern, solder mask, copper thermal pad, and assembly process must follow the manufacturer package drawing. Firmware should also use the STM32G431KB device definition matching the exact ordering code rather than relying on a generic STM32G4 target.
This product page consolidates the verified 170 MHz, 128 KB Flash, 32 KB SRAM, package, availability, and purchase information while distinguishing documented facts from unverified electrical details. It also identifies the absence of a substantiated five-part drop-in replacement set in the supplied cross-reference data, avoiding unsupported substitute recommendations.
Alternativas drop-in para STM32G431KBU6 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Nenhuma alternativa drop-in disponível para este produto.
Solicitar alternativasSTM32G431KBU6 Classificações máximas e características elétricas
| Product Type | 32-bit microcontroller |
| Processor Core | Arm Cortex-M4F |
| Instruction Set | 32-bit RISC |
| Maximum CPU Frequency | 170 MHz |
| Core Performance | 213 DMIPS |
| Floating-Point Unit | Yes |
| Flash Memory | 128 KB |
| Flash Organization | 128K x 8 |
| SRAM | 32 KB |
| ADC Resolution | 12-bit |
| Encapsulamento | 32-pin UFQFPN, 5 x 5 mm |
| Tipo de montagem | Surface mount |
Guia de Configuração de Pinos do STM32G431KBU6 32-pin ufqfpn, 5 x 5 mm
Configuração de pinos para STM32G431KBU6 (pacote 32-pin ufqfpn, 5 x 5 mm). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para STM32G431KBU6.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
STM32G431KBU6 é adequado para 6 aplicaçãos: Compact Digital Motor Control, Digital Power Supply Monitoring, Industrial Sensor Node, Communications Equipment, Compact Instrumentation, Embedded Power Conversion Controller.
Compact Digital Motor Control
The STM32G431KBU6 fits compact digital motor-control modules because its Arm Cortex-M4F core operates at up to 170 MHz and delivers a stated 213 DMIPS, leaving processing headroom for control algorithms and supervisory logic. The 32 KB SRAM supports working state, while 128 KB Flash provides room for firmware, calibration tables, and parameter handling. Its 32-pin 5 x 5 mm UFQFPN package helps reduce board area in motor-drive modules. The design must still verify the required timer channels, encoder inputs, analog inputs, and PWM outputs in the manufacturer pinout. Because the verified information does not provide the complete peripheral map, firmware development should begin with the STM32CubeMX configuration for the exact STM32G431KB device and the selected motor-control board constraints.
Recomendado
Digital Power Supply Monitoring
The STM32G431KBU6 is appropriate for digital power monitoring when fast control logic and local measurement processing are needed near the power stage. Its Cortex-M4F processor runs at up to 170 MHz, and the verified 12-bit conversion feature supports analog measurement functions. The 128 KB Flash can hold control code and calibration parameters, while 32 KB SRAM accommodates sampled data and control-loop state. Using the MCU in a digital power module can consolidate supervisory functions that would otherwise occupy a separate controller. The exact analog pin locations, voltage limits, PWM channels, and converter-control peripherals must be checked against the official datasheet. Board layout should isolate sensitive analog inputs from switching nodes and provide appropriate filtering before conversion.
Recomendado
Industrial Sensor Node
The STM32G431KBU6 can serve as the processing core of a compact industrial sensor node that must combine measurement, local filtering, and communications. Its Cortex-M4F architecture supports floating-point processing at up to 170 MHz, which is useful when sensor data is scaled or filtered without offloading every operation to the host. The 12-bit conversion feature supports direct acquisition where the assigned pins and analog limits meet the application. Memory is sufficient for an embedded control and protocol stack at 128 KB Flash and 32 KB SRAM. The 5 x 5 mm UFQFPN footprint limits board size, although thermal and soldering demands require careful PCB construction. Firmware and hardware engineers should verify the node's sensor bandwidth, communication peripherals, operating temperature, and isolation requirements before choosing this MCU.
Recomendado
Communications Equipment
The STM32G431KBU6 is suitable for protocol-intensive embedded equipment where the 170 MHz Cortex-M4F core provides more processing margin than basic control-oriented devices. The documented 128 KB Flash can store networking code and configuration, while 32 KB SRAM supports packet buffers and application state. Its compact 32-pin UFQFPN package is advantageous in gateways, remote terminals, and compact interface modules. The MCU's actual communications interface count and pin multiplexing must be confirmed from the manufacturer data before interface selection, because the supplied search results do not enumerate them. Engineers should also evaluate external memory needs, transceiver characteristics, antenna integration, and industrial temperature requirements. A successful design should assign communication pins early and preserve the exact UFQFPN land pattern during schematic and PCB review.
Recomendado
Compact Instrumentation
The STM32G431KBU6 fits compact digital instrumentation when measurement, control, and a human or network interface share one controller. Its 170 MHz Cortex-M4F performance supports responsive sampling and floating-point calculations, and the verified 12-bit conversion capability provides an embedded analog acquisition path. The 128 KB Flash accommodates application firmware, configuration data, and display or communication routines, while 32 KB SRAM supports sample buffers and working variables. The 5 x 5 mm UFQFPN package supports compact instruments but leaves little room for routing mistakes. Engineers must confirm analog bandwidth, reference-voltage requirements, timer availability, and exposed-pad thermal performance. Grounding, analog filtering, reference routing, and calibration storage should be treated as layout-critical functions rather than afterthoughts.
Recomendado
Embedded Power Conversion Controller
The STM32G431KBU6 can serve as the digital controller in a compact power-conversion module where accurate timing, local computation, and fast control responses are required. Its Cortex-M4F core operates at up to 170 MHz and provides a stated 213 DMIPS, allowing supervisory and compensation calculations to coexist with power-stage control functions. The 128 KB Flash can retain control firmware and calibration data, while 32 KB SRAM is available for sampled signals and control state. The 12-bit conversion feature can support feedback acquisition if the relevant pins and electrical limits are appropriate. The verified package is a compact 32-pin UFQFPN, helping reduce converter footprint. Designers must still confirm PWM resolution, comparator or operational-amplifier resources, analog limits, startup behavior, and thermal conditions using the official STM32G431KB documentation.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para STM32G431KBU6 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto |
|---|---|
| Brand | STMicroelectronics |
| Package | 32-pin UFQFPN, 5 x 5 mm |
| Processor Core | Arm Cortex-M4F |
| Maximum CPU Frequency | 170 MHz |
| Core Performance | 213 DMIPS |
| Flash Memory | 128 KB |
| SRAM | 32 KB |
| ADC Resolution | 12-bit |
| Verified Unit Price | $5.6619 as of 2026-10-28 |
Principais diferenciais
- High-performance Cortex-M4F processing in a compact package (vs STM32F031G6U6TR)
- Substantially smaller package than the 48-pin family option (vs STM32G431CBU6)
- More local memory than lower-density STM32 alternatives (vs STM32G431K8U6)
Notas de projeto
Use the official STM32G431KB package drawing to create the 32-pin UFQFPN land pattern. The supplied verified sources confirm the 5 x 5 mm package but do not provide pin names, pad dimensions, or exposed-pad geometry, so those details must not be reconstructed from a generic QFN library. Check pin numbering, pad length, solder-mask clearance, and the exposed thermal pad against the manufacturer drawing before Gerber release.
Treat the exposed thermal area as part of both the mechanical footprint and the thermal system. Use as much uninterrupted ground copper as the package and board rules permit, add thermal vias where the manufacturer recommendation allows them, and avoid placing temperature-sensitive analog sections directly beneath the MCU. The supplied data does not provide a junction-temperature rating or package thermal resistance, so operating-temperature margins cannot be calculated from this record.
Keep 170 MHz processor activity and switching-power connections away from sensitive analog traces. If the MCU performs 12-bit measurements, route inputs away from switching nodes, use a quiet reference arrangement, and terminate unused inputs according to the device guidance in the official datasheet. Validate the final analog network with oscilloscope measurements because the supplied sources do not specify ADC input impedance, acquisition time, or reference-voltage limits.
Do not substitute STM32G431CBU6 directly for STM32G431KBU6: the verified listings identify 48-pin and 32-pin UFQFPN packages respectively. Likewise, STM32G431KBU6TR is a reel-oriented ordering code rather than a distinct drop-in engineering alternative. Use the exact device identifier when generating firmware support, and verify the package, temperature grade, pin muxing, and electrical limits in STMicroelectronics documentation.
Informações de conformidade
The supplied manufacturer and distributor search results do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than inferred from general STM32 family practices.