STM32G031J4M6 - 64MHz Cortex-M0+ 16KB MCU | STMicroelectronics
Référence : STM32G031J4M6 ✓ ActifSTM32G031J4M6 Présentation
A microcontroller is a semiconductor device that integrates a processor core, program memory, data memory, and peripherals into one integrated circuit. The STM32G0 series occupies the low-end portion of the STM32 product portfolio: microcontroller, embedded system, embedded controller, semiconductor. Its Arm Cortex-M0+ core provides a 32-bit instruction set with compact software-oriented control, while the STM32G031J4M6 is designed for applications that require modest memory, fast control, and multiple serial interfaces without a larger package.
Key features include a maximum 64 MHz CPU frequency, 16 KB of Flash memory, 8 KB of SRAM, and two USART peripherals. The listed interface resources also include timers, an ADC, and communication interfaces. The operating voltage range is 1.7 V to 3.6 V, allowing the device to operate from common low-voltage rails used in compact embedded products. The 8-SO package also reduces PCB space requirements compared with larger STM32G0 packages.
The Cortex-M0+ architecture provides a straightforward migration path for engineers already using Arm-based embedded systems. Peripheral integration is suitable for sensor reading, digital control, communications, and compact automation designs. Two USART channels can connect the MCU to external sensors, transceivers, display controllers, or service interfaces, while the ADC supports analog measurements and the timers support periodic or event-driven control functions.
Typical applications include industrial control modules, IoT sensor nodes, compact motor-control or metering systems, embedded automation controllers, and low-power board designs. Engineers should confirm peripheral assignments, clock configuration, and package pin multiplexing against the manufacturer pinout and reference manual before finalizing the PCB layout.
The main design trade-off is the combination of limited 16 KB Flash and 8 KB RAM with a compact 8-pin package. This is suitable for focused control tasks but less appropriate for complex user interfaces, large protocol stacks, or graphics-intensive workloads. Adequate decoupling, stable supply routing, and correct assignment of the multiplexed 8-pin interface remain essential.
This product page combines the manufacturer family information, distributor part details, interface specifications, replacement analysis, and practical design guidance to support component selection, PCB planning, and sourcing decisions.
Alternatives de remplacement direct pour STM32G031J4M6 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
STM32G031J4M3
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
STM32G031J4M6 Valeurs maximales et caractéristiques électriques
| Product Type | 32-bit microcontroller MCU |
| Product Series | STM32G0 |
| Processor Core | Arm Cortex-M0+ |
| Instruction Set | 32-bit RISC |
| Maximum CPU Frequency | 64 MHz |
| Flash Memory | 16 KB (16K x 8) |
| RAM | 8 KB |
| USART Count | 2 |
| ADC | Present |
| Timers | Present |
| Communication Interfaces | Present |
| Operating Voltage Range | 1.7 V to 3.6 V |
| Boîtier | 8-SO |
| Type de montage | Surface mount |
| Core Architecture | Arm Cortex-M0+ |
| Temperature Grade Indicator | M6 grade |
Guide de configuration des broches du STM32G031J4M6 8-so
Configuration des broches du STM32G031J4M6 (boîtier 8-so). 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 STM32G031J4M6.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
STM32G031J4M6 convient pour 6 applications: Industrial Control Modules, IoT Sensor Nodes, Compact Metering Systems, Embedded Automation Controllers, Low-Power Board Controllers, Serial Communication Hubs.
Industrial Control Modules
The STM32G031J4M6 fits compact industrial control modules that require deterministic digital processing and several communication resources without the memory overhead of a larger microcontroller. Its 64 MHz Arm Cortex-M0+ core handles supervisory logic, timers, and protocol servicing, while 16 KB of Flash and 8 KB of RAM support focused embedded firmware. Two USART channels can connect local sensors or downstream controllers, and the ADC supports process-variable monitoring. The 1.7 V to 3.6 V operating range supports low-voltage industrial boards, although the 8-SO package requires careful multiplexing of pins and confirmation of the exact grade before deployment.
Recommandé
IoT Sensor Nodes
The STM32G031J4M6 is suitable for IoT sensor nodes that periodically acquire measurements and communicate through a local serial link. The ADC accepts analog sensor inputs, while timers can schedule sampling and communication events. A 64 MHz Cortex-M0+ core provides enough performance for protocol handling and local control, and the 16 KB Flash plus 8 KB RAM fit compact applications with disciplined code size. The 8-SO package helps reduce board area, and the 1.7 V to 3.6 V range is useful in battery-managed designs. Firmware size and peripheral mapping should be checked early because the 8-pin package has limited dedicated I/O.
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Compact Metering Systems
The STM32G031J4M6 can serve as the controller in a compact metering system where measurement, accumulation, and communication are combined in a small enclosure. The ADC supports direct analog acquisition, the timers help establish accurate sampling or pulse-counting intervals, and two USART peripherals provide flexible communication channels. Its Cortex-M0+ 32-bit architecture and 64 MHz clock support responsive control and serial protocol handling, while the 8-SO package supports dense board layouts. The 16 KB Flash and 8 KB RAM constrain application complexity, so code should focus on measurement and communication rather than extensive local storage or a graphical interface.
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Embedded Automation Controllers
The STM32G031J4M6 is appropriate for small embedded automation controllers that coordinate discrete inputs, timers, and serial devices. At up to 64 MHz, the Cortex-M0+ core can execute control logic and communication tasks concurrently under an interrupt-driven architecture. The two USART channels provide useful flexibility for local configuration and diagnostics, while the ADC permits analog supervision of sensors or supply conditions. Its 8-SO package minimizes footprint, and its 1.7 V to 3.6 V range integrates readily with compact power systems. Engineers should verify startup, reset, clock, and debug pin assignments because the limited pin count may require multiplexing or a small I/O expander.
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Low-Power Board Controllers
The STM32G031J4M6 can be used as a low-power board controller for compact embedded systems where a 3.3 V-class rail and limited memory are normal. Its 1.7 V to 3.6 V operating range supports multiple low-voltage power architectures, while the timers, ADC, and two USARTs provide useful control and monitoring functions without requiring a large package. The 64 MHz Cortex-M0+ core permits responsive event handling, and 8 KB of RAM is suitable for modest working sets. For battery-operated equipment, engineers must select the appropriate low-power mode, configure wakeup events, and calculate average current from the actual peripheral load rather than maximum-frequency specifications.
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Serial Communication Hubs
The STM32G031J4M6 can act as a small protocol bridge or configuration hub because it includes two USART interfaces and runs a 64 MHz Arm Cortex-M0+ core. One serial channel can connect an upstream controller while the other serves a local peripheral, allowing protocol conversion, buffering, diagnostics, or configuration storage. The 16 KB Flash and 8 KB RAM are adequate for compact service routines, while the 8-SO package keeps the implementation physically small. The main limitation is I/O density, so a design needing several logic levels, multiple bus nodes, or high baud-rate signal conditioning should add an appropriate transceiver and carefully validate timing margins.
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Récapitulatif des produits recommandés
Données de référence d'ingénierie pour STM32G031J4M6 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | STM32G031J4M3 |
|---|---|---|
| Package | 8-SO | 8-SO |
| Brand | STMicroelectronics | STMicroelectronics |
| Processor Core | Arm Cortex-M0+ | Arm Cortex-M0+ |
| Maximum CPU Frequency | 64 MHz | 64 MHz |
| Flash Memory | 16 KB | 16 KB |
| RAM | 8 KB | 8 KB |
| USART Count | 2 | 2 |
| Operating Voltage Range | 1.7 V to 3.6 V | 1.7 V to 3.6 V |
| ADC | Present | Present |
| Grade Suffix | M6 | M3 |
Principaux différenciateurs
- Compact 8-SO integration (vs STM32G031J4M3)
- M6 order-code configuration (vs STM32G031J4M3)
- Low-voltage operation (vs STM32G031J4M3)
Notes de conception
Design the supply path for the documented 1.7 V to 3.6 V operating range and include local ceramic decoupling close to the VDD and VSS pins. Place the bulk capacitor near the regulator or power-source connection, keep the high-current return path compact, and avoid routing switching-node or high-current traces beneath the microcontroller. Confirm the capacitor voltage rating and ESR requirements against the manufacturer hardware guidelines.
The 8-SO footprint exposes only a limited number of I/O pins, so assign boot, reset, debug, clocks, and serial interfaces before committing to the schematic. Follow the manufacturer pinout diagram and alternate-function table exactly. Keep sensitive analog inputs away from fast switching nodes, preserve a continuous ground reference, and route programming or debug access so it remains usable after final enclosure assembly.
Do not treat the STM32G031J4 base name as a complete orderable configuration. The M3 and M6 suffixes identify different order-code variants, and tape-and-reel, tube, temperature-grade, and other options can change procurement or environmental suitability. Cross-check the complete MPN against the STMicroelectronics ordering table, device label, and incoming inspection requirements before releasing production quantities.
For the two USART channels, match the controller voltage levels to the selected transceiver or peripheral and account for line capacitance at the maximum intended baud rate. Keep ground-return paths continuous, place termination near the line endpoint where appropriate, and separate communications routing from ADC inputs. Firmware configuration should verify oversampling, parity, and baud-rate tolerance rather than relying only on nominal connector timing.
Informations de conformité
Compliance declarations are not stated in the manufacturer page excerpt or distributor summaries. Confirm RoHS, REACH, lead-free, halogen-free, conflict-minerals, and automotive qualification status using the current STMicroelectronics product documentation or declaration for the exact order code.
