STM32L031K6T7 - 32MHz Cortex-M0+ 32KB MCU | STMicroelectronics
部品番号: STM32L031K6T7 ✓ 生産中STM32L031K6T7 概要
An ultra-low-power microcontroller is a semiconductor device designed to minimize energy use during active operation, sleep, and standby modes. The STM32L031K6 belongs to STMicroelectronics' access-line STM32L0 family. Its position in the hierarchy is microcontroller IC, embedded processor, microcontroller, and semiconductor. This makes it suitable for compact battery-powered sensing, industrial control, communications, and consumer equipment where a general-purpose processor would be unnecessarily large or power-hungry.
Key features include a 32 MHz Arm Cortex-M0+ processor, 32 KB of Flash program memory, and 8 KB of SRAM. The verified product information also identifies a 12-bit ADC and an operating-temperature range of -40°C to +105°C. These specifications support firmware storage, real-time control tasks, analog signal acquisition, and industrial thermal requirements while keeping the device within the STM32L0 access-line portfolio.
The 32-bit Cortex-M0+ architecture provides a compact instruction set and efficient execution for embedded workloads. With 32 KB of Flash, the MCU can hold boot code, application firmware, configuration data, and protocol handlers without requiring an external memory interface. Its 8 KB of SRAM provides working memory for control loops, communication buffers, and peripheral data handling, although developers should size memory carefully in highly concurrent applications.
Typical applications include low-power sensor nodes, industrial monitoring equipment, compact control panels, building automation endpoints, battery-operated instruments, and embedded communications controllers. The -40°C to +105°C range makes the device relevant to demanding industrial environments, while the 12-bit ADC supports analog inputs used in sensing and measurement designs.
When designing around the STM32L031K6T7, verify every peripheral, alternate-function mapping, pin requirement, and software-driver dependency against the manufacturer documentation. Pay particular attention to startup configuration, clock limits, ADC acquisition requirements, and low-power mode transitions. PCB layout should preserve clean power distribution and appropriate decoupling around this 32-LQFP device.
This product page consolidates verified manufacturer and distributor information, purchase context, technical comparison data, and practical design guidance. It distinguishes verified attributes from specifications requiring confirmation, helping engineers evaluate the STM32L031K6T7 without relying on generic microcontroller claims.
ドロップイン代替品: STM32L031K6T7 — 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: STM32L031K6T7 （同一形状・フットプリント） — 相違点: Package, Flash Memory, Product Type, RoHS Status, SRAM.
STM32L031K6T6
✅ ドロップイン ⚠️ 仕様未検証価格はお問い合わせください
データシートを見る →STM32L041K6T6
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
STM32L051K6T6
✅ 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 →STM32L021K4T6
✅ 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 →STM32L031K6T7 最大定格＆電気的特性
| Product Type | Ultra-low-power 32-bit microcontroller |
| CPU Core | Arm Cortex-M0+ |
| Architecture | 32-bit RISC |
| Maximum CPU Frequency | 32 MHz |
| Flash Memory | 32 KB |
| Flash Organization | 32K x 8 bits |
| SRAM | 8 KB |
| ADC Resolution | 12 bit |
| 動作温度範囲 | -40°C to +105°C |
| パッケージ | 32-LQFP, 7 x 7 mm |
| 実装タイプ | Surface mount |
| Product Series | STM32L0 access line |
| Core Variant | STM32L031x4/6 family |
| RoHS ステータス | RoHS3 compliant |
| Supply Status | In stock at LCSC |
STM32L031K6T7 32-lqfp, 7 x 7 mm ピン配置ガイド
STM32L031K6T7 (32-lqfp, 7 x 7 mm パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: STM32L031K6T7.
詳細は データシート をご参照ください。
主な用途
STM32L031K6T7 の用途: 6 件s: Battery-Powered Sensor Nodes, Industrial Process Monitoring, Building Automation Endpoints, Low-Power Communication Controllers, Compact Control Panels, Battery-Operated Instruments.
Battery-Powered Sensor Nodes
The STM32L031K6T7 fits compact battery-powered sensor nodes because its 32 MHz Arm Cortex-M0+ core handles acquisition, filtering, and local control while the STM32L0 family is positioned for ultra-low-power operation. Its 32 KB of Flash accommodates application firmware, calibration data, and update logic, while 8 KB of SRAM supports working buffers. The 12-bit ADC provides a usable resolution for many cost-sensitive analog measurements. Designers should operate peripherals selectively and confirm low-power current and wake-up behavior from the manufacturer documentation. The -40°C to +105°C range also permits deployment across industrial temperature environments without changing the controller family.
おすすめ
Industrial Process Monitoring
The STM32L031K6T7 is appropriate for compact industrial process-monitoring modules that combine analog sensing with local logic. Its 12-bit ADC supports measurement channels, while the 32-bit Cortex-M0+ core at up to 32 MHz can run sampling control, filtering, diagnostics, and communications. The 32 KB Flash provides room for embedded protocols and configuration, and 8 KB of SRAM can hold short acquisition buffers. Its verified -40°C to +105°C operating range is useful in factory equipment and other thermally variable environments. Design engineers should add appropriate input protection, verify ADC acquisition limits, and separate sensitive analog routing from digital clocks and switching nodes.
おすすめ
Building Automation Endpoints
The STM32L031K6T7 can serve as the local controller in a building-automation endpoint responsible for sensor aggregation, actuator commands, and network communication. Its 32 KB Flash and 8 KB SRAM are suitable for compact control firmware, while the 32 MHz Cortex-M0+ core provides responsive task scheduling without requiring a higher-power processor. The 12-bit ADC supports environmental inputs such as temperature, light, or occupancy-related analog interfaces. Low-power capability is valuable in battery or energy-harvested installations. Firmware should use the device's documented sleep modes, avoid unnecessary polling, and validate the exact digital-interface and peripheral assignments on the final 32-LQFP footprint.
おすすめ
Low-Power Communication Controllers
The STM32L031K6T7 is suitable for small protocol controllers that must mediate data between a sensor or actuator and a fieldbus, serial link, or local gateway. The 32 MHz Cortex-M0+ processor can manage framing, timeouts, status reporting, and configurable data-rate handling. Its 32 KB of Flash can hold protocol stacks and application logic, while 8 KB of SRAM accommodates packet buffers and state machines. The MCU's compact 32-LQFP package supports dense controller boards. Engineers should review UART, SPI, I2C, timer, and pin-multiplexing requirements against the datasheet, because the supplied data does not enumerate peripheral counts or alternate functions.
おすすめ
Compact Control Panels
The STM32L031K6T7 can support compact control-panel logic where a display, keypad, indicator, and limited set of analog or digital I/O must be coordinated. Its 32-bit Cortex-M0+ core at 32 MHz can manage user-interface state, input scanning, debouncing, and status updates, while 32 KB of Flash and 8 KB of SRAM fit focused embedded firmware. The 12-bit ADC can support analog controls or monitoring inputs. The 7 x 7 mm 32-LQFP package helps minimize controller-board area. Layout planning should keep display and switching interfaces away from sensitive ADC routing, while firmware should include debounce, fault recovery, and brownout-aware startup behavior.
おすすめ
Battery-Operated Instruments
The STM32L031K6T7 suits compact battery-operated instruments where a dedicated low-power MCU can manage measurements, event handling, and status reporting. The 32 MHz Cortex-M0+ core offers enough performance for local computation, and the STM32L0 family's ultra-low-power positioning aligns with long-duration battery operation. Memory is adequate for instrument firmware, configuration, and short working data sets, with 32 KB of Flash and 8 KB of SRAM. The 12-bit ADC can digitize suitable sensor signals, and the wide -40°C to +105°C range supports harsh installations. Designers should calculate average current from the exact active and sleep duties and confirm regulator dropout, battery impedance, and wake-up sources.
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: STM32L031K6T7 — 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 | STM32L031K6T6 | STM32L041K6T6 | STM32L051K6T6 | STM32L021K4T6 |
|---|---|---|---|---|---|
| Package | 32-LQFP (7 x 7 mm) | 32-LQFP (7 x 7 mm) | 32-LQFP (7 x 7 mm) | 32-LQFP (7 x 7 mm) | 32-LQFP (7 x 7 mm) |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| CPU Core | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB |
| Series Position | STM32L031 access line | STM32L031 access line | STM32L04 access line | STM32L05 access line | STM32L02 access line |
主な差別化要因
- Broader verified temperature grade （vs STM32L031K6T6)
- Double the Flash capacity （vs STM32L021K4T6)
- Direct access-line family positioning （vs STM32L051K6T6)
設計ノート
Place the STM32L031K6T7 on a stable ground plane and route supply traces directly to its power pins. Add local high-frequency decoupling close to the device and bulk energy storage near the supply entry point. Because the supplied data does not specify recommended capacitor values or ESR requirements, use the manufacturer application guidance and regulator stability requirements rather than relying on generic values.
Keep the 12-bit ADC signal paths short, quiet, and separated from switching-node, clock, and digital-output routing. Use a defined analog ground strategy and avoid routing analog inputs beneath noisy digital or power-conversion nodes. The verified material does not provide input impedance, sampling-time, or reference specifications, so ADC conditioning and acquisition timing must be calculated from the manufacturer datasheet.
Do not assume that any related STM32L0 MCU is an automatic software or pin-level substitute. The alternative candidates share the 32-LQFP format, but alternate functions, peripheral availability, clock options, interrupt behavior, and low-power characteristics can differ. After any substitution, rebuild the firmware with the correct device header, recheck the linker memory map, and validate every pin assignment against the selected part's datasheet.
For battery-powered designs, estimate the average current from active processing, analog conversion, communications activity, and the selected low-power state rather than using only the CPU frequency. The supplied data confirms the STM32L0 family's ultra-low-power positioning but does not provide detailed current-consumption figures. Confirm run, sleep, and standby currents, wake-up timing, and regulator efficiency using the manufacturer documentation.
コンプライアンス情報
The verified ICBoms listing identifies the STM32L031K6T7 as RoHS3 compliant. REACH, lead-free, halogen-free, conflict-minerals, and automotive qualification data were not supplied.
