STM32G031K8U7 - 64MHz Cortex-M0+ MCU | STMicroelectronics
部品番号: STM32G031K8U7 ✓ 生産中STM32G031K8U7 概要
A microcontroller is a programmable semiconductor that integrates a processor core, memory, peripherals, and communication interfaces on one integrated circuit. Within the product hierarchy, the STM32G031K8U7 is an ARM Cortex-M0+ microcontroller, an embedded processor, and a compact system-on-chip for control-oriented products. Its 32-bit architecture supports efficient instruction execution while its small package and memory configuration suit cost-sensitive, space-constrained designs.
The principal device characteristics are a maximum 64 MHz core frequency, 64 KB of Flash, and 8 KB of SRAM. The STM32G031K8 family supports operating-temperature options from -40°C to 85°C, 105°C, or 125°C, depending on the selected ordering variant. Its compact 5 x 5 mm UFQFPN package also supports surface-mount manufacturing and reduces PCB area compared with larger leaded packages.
The Cortex-M0+ core provides a practical balance of processing capability, efficiency, and implementation complexity. Flash memory retains firmware when the device is unpowered, while SRAM supports working data and stack operations. The family is designed for applications requiring compact control logic and efficient embedded processing without the memory scale of a higher-end Cortex-M application processor.
Typical applications include compact sensor controllers, building and industrial automation modules, battery-powered monitoring equipment, appliance controls, and low-cost USB-enabled accessories. The small package is especially useful when the PCB area around the MCU is constrained but manufacturing still requires a conventional surface-mount assembly process.
Designers should confirm the complete pin assignment, exposed-pad connection, decoupling requirements, and peripheral availability against the STM32G031K8 datasheet before layout release. The UFQFPN thermal pad must be connected according to the device's recommended land pattern and thermal strategy, while unused GPIO and supply pins should follow the stated input and termination requirements.
This page combines the verified STM32G031K8U7 device identity, manufacturer documentation, pin and package information, practical application guidance, and a parameter-by-parameter comparison with close same-family alternatives. It is intended to accelerate engineering selection while keeping PCB compatibility and firmware constraints visible.
ドロップイン代替品: STM32G031K8U7 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: STM32G031K8U7 （同一形状・フットプリント） — 相違点: Package, SRAM.
STM32G051K8U7
✅ ドロップイン📋 参考代替品（カタログ未掲載）
STM32G031K8U6TR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
STM32G051K8U6
✅ ドロップイン価格はお問い合わせください
データシートを見る →STM32G071KBU7TR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
STM32G031K8U7 最大定格＆電気的特性
| Product Type | 32-bit ARM Cortex-M0+ microcontroller |
| Processor Core | ARM Cortex-M0+ |
| Maximum CPU Frequency | 64 MHz |
| Flash Memory | 64 KB |
| SRAM | 8 KB |
| Word Architecture | 32-bit |
| Program Memory Organization | 64K x 8 |
| パッケージ | 32-pin UFQFPN (5 x 5 mm) |
| 実装タイプ | Surface Mount |
| Series | STM32G0 mainstream |
| SRAM Hardware Parity Check | Supported |
| Flash Memory Protection | Supported |
| Securable Flash Area | Supported |
| Operating Temperature Options | -40°C to 85°C, -40°C to 105°C, or -40°C to 125°C |
| Internal Core Supply | VCORE generated by an embedded linear voltage regulator |
| Analog Reference Supply | VREF+ is internally connected to VDD on packages without a VREF+ pin |
STM32G031K8U7 ピン構成
| ピン 1 | VBAT — Backup supply input |
| ピン 2 | PC14-OSC32_IN — General-purpose input or 32.768 kHz oscillator input |
| ピン 3 | PC15-OSC32_OUT — General-purpose input or 32.768 kHz oscillator output |
| ピン 4 | NRST — Active-low reset input |
| ピン 5 | VSSA-VREF- — Analog ground and negative reference input |
| ピン 6 | VDDA — Analog supply input |
| ピン 7 | PA0 — General-purpose input or output |
| ピン 8 | PA1 — General-purpose input or output |
| ピン 9 | PA2 — General-purpose input or output |
| ピン 10 | PA3 — General-purpose input or output |
| ピン 11 | PA4 — General-purpose input or output |
| ピン 12 | PA5 — General-purpose input or output |
| ピン 13 | PA6 — General-purpose input or output |
| ピン 14 | PA7 — General-purpose input or output |
| ピン 15 | PB0 — General-purpose input or output |
| ピン 16 | PB1 — General-purpose input or output |
| ピン 17 | VSS — Digital ground |
| ピン 18 | VDD — Digital supply input |
| ピン 19 | PA8 — General-purpose input or output |
| ピン 20 | PA9 — General-purpose input or output |
| ピン 21 | PA10 — General-purpose input or output |
| ピン 22 | PA11 — General-purpose input or output |
| ピン 23 | PA12 — General-purpose input or output |
| ピン 24 | PA13 — General-purpose input or output or SWDIO debug signal |
| ピン 25 | PA14 — General-purpose input or output or SWCLK debug signal |
| ピン 26 | PA15 — General-purpose input or output |
| ピン 27 | PB3 — General-purpose input or output |
| ピン 28 | PB4 — General-purpose input or output |
| ピン 29 | PB5 — General-purpose input or output |
| ピン 30 | PB6 — General-purpose input or output |
| ピン 31 | PB7 — General-purpose input or output |
| ピン 32 | PH0-OSC_IN — High-speed oscillator input |
主な用途
STM32G031K8U7 の用途: 6 件s: Compact Sensor and Condition Monitoring, Industrial Automation and Control Modules, Battery-Powered Portable Equipment, Smart Building and Environment Nodes, Appliance Controls and Human Interfaces, USB-Enabled Compact Accessories.
Compact Sensor and Condition Monitoring
The STM32G031K8U7 fits compact monitoring controllers because its 64 MHz Cortex-M0+ core provides useful processing headroom while 64 KB of Flash and 8 KB of SRAM remain appropriate for local acquisition and control firmware. The 32-pin 5 x 5 mm UFQFPN reduces board area compared with larger MCU packages. A design can use the small footprint beside a sensor front end, then perform filtering, thresholding, status logging, and communication. Hardware SRAM parity checking and protected Flash improve integrity in unattended equipment. Confirm analog and digital I/O assignments, the exact temperature grade, and exposed-pad thermal requirements before layout release.
おすすめ
Industrial Automation and Control Modules
STM32G031K8U7 is appropriate for compact industrial control modules that require deterministic embedded processing without a large logic device. Its 64 MHz Cortex-M0+ core can manage digital I/O, communication routines, and supervisory logic, while the 64 KB Flash and 8 KB of SRAM support focused firmware. The small UFQFPN package is useful in densely populated control assemblies. Temperature grades extending to 125°C provide design flexibility for industrial environments, but the exact ordered variant must match the enclosure temperature. Validate EMC performance, isolation boundaries, grounding, and peripheral availability during system qualification.
おすすめ
Battery-Powered Portable Equipment
The STM32G031K8U7 can serve as the control processor in compact battery-powered equipment where a 5 x 5 mm package preserves usable board area. Its Cortex-M0+ architecture supports low-cost control logic, while 64 KB of Flash accommodates application firmware and 8 KB of SRAM handles working state. Low-power design should combine the MCU's clock and sleep options with careful selection of external sensors and communications. Confirm whether active USB, ADC accuracy, and required timers are available for the exact variant. A power-budget calculation should account for MCU sleep current, wakeup behavior, and the load current of attached peripherals.
おすすめ
Smart Building and Environment Nodes
STM32G031K8U7 is well suited to compact building nodes that combine sensing, local logic, and low-speed serial communications. Its 64 MHz core can execute protocol handling and scheduled control tasks, while the 32-pin package allows placement near a connector or sensor rather than in a central control enclosure. The protected and securable Flash capability supports firmware integrity mechanisms in connected equipment. Use the manufacturer pinout to assign communication, debug, and analog functions, and place decoupling close to every supply pin. Product-level RF immunity, low-voltage behavior, and standby current should be validated with the complete peripheral load rather than the MCU alone.
おすすめ
Appliance Controls and Human Interfaces
The STM32G031K8U7 can implement appliance control logic, button handling, status indication, and communications in a compact user-interface module. Its 64 MHz Cortex-M0+ core handles multiple real-time control tasks, while 64 KB of Flash and 8 KB of SRAM fit typical embedded-control workloads. The small UFQFPN package is advantageous when the controller must fit behind a display, keypad, or touch-control board. Keep display and switching-control traces separated appropriately, provide local bypass capacitance, and connect the exposed pad as specified. Validate display timing, touch-controller interfaces, temperature rise, and production-test access against the final mechanical design.
おすすめ
USB-Enabled Compact Accessories
STM32G031K8U7 can support compact USB-enabled accessories when the selected family variant and package expose the required USB functions. Its Cortex-M0+ core provides sufficient control capability for peripheral management and user-interface logic, while the 5 x 5 mm UFQFPN helps minimize connector-side board area. The design must follow the manufacturer's USB routing and impedance guidance, provide correct decoupling, and account for ESD protection at an accessible connector. Firmware should validate enumeration and suspend behavior on production hardware. Before committing to the MCU, confirm USB pin availability, clock requirements, and the exact operating-temperature grade in the device documentation.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: STM32G031K8U7 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | STM32G051K8U7 | STM32G031K8U6TR | STM32G051K8U6 | STM32G071KBU7TR |
|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 32-pin UFQFPN (5 x 5 mm) | 32-pin UFQFPN (5 x 5 mm) | 32-pin UFQFPN (5 x 5 mm) | 32-pin UFQFPN (5 x 5 mm) | 32-pin UFQFPN (5 x 5 mm) |
| Processor Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Temperature-Grade Suffix | U7 industrial grade | U7 industrial grade | U6 extended grade with tape-and-reel format | U6 extended grade | U7 industrial grade with tape-and-reel format |
主な差別化要因
- Compact mainstream STM32G0 implementation （vs STM32G051K8U7)
- Maintained memory-integrity features （vs STM32G031K8U6TR)
- Same-package upgrade path within STM32G0 （vs STM32G071KBU7TR)
設計ノート
Use the STMicroelectronics UFQFPN land pattern rather than adapting a generic QFN footprint. Confirm whether the 32-pin package includes a separately numbered exposed pad and connect it to ground as required by the STM32G031K8 package drawing. Place the local bypass capacitors adjacent to the corresponding VDD and VDDA pins, keep the return path short, and reserve unobstructed thermal copper around the device.
Power the MCU with clean, correctly sequenced supplies and decouple both digital and analog domains near the package. On packages without a dedicated VREF+ pin, VREF+ is internally connected to VDD and the internal reference buffer must remain disabled as stated in the datasheet. Check the voltage limits for VBAT, VDD, and VDDA before designing the board, and ensure external peripherals cannot back-power an unpowered MCU.
Estimated: the actual junction temperature depends on the exact supply voltage, clock rate, duty cycle, board construction, and ambient temperature, so calculate dissipation from those operating values. Preserve as much exposed-pad copper as the package rules permit and use thermal vias only where the footprint permits them. Validate the assembled board with thermocouples or an infrared measurement because junction temperature is not the same as the exposed-pad temperature.
Do not select an alternative from the processor frequency and Flash size alone. Check the package pinout, exposed-pad treatment, temperature suffix, SRAM size, peripheral assignments, debug interface, and software support. STM32G031K8U6TR and STM32G071KBU7TR are tape-and-reel orderings, while the non-TR target is supplied in a tray; confirm the shipping format with purchasing before releasing a production BOM.
コンプライアンス情報
The manufacturer documentation and product pages do not expose a complete compliance declaration for this exact ordering code. Confirm the current material declaration and qualification status with STMicroelectronics before an automotive or regulated-market design.