STM32F401CBU6 - 84MHz Cortex-M4 128KB MCU | STMicroelectronics
部品番号: STM32F401CBU6 ✓ 生産中STM32F401CBU6 概要
A microcontroller is a programmable semiconductor that integrates a processor core, memory, peripherals, and communication interfaces onto one device. The STM32F401CBU6 belongs to the hierarchy of Cortex-M microcontrollers, 32-bit embedded processors, and general-purpose semiconductors. Its balanced combination of processing performance, internal Flash, compact packaging, and low-voltage operation makes it useful where a small controller must execute firmware while handling sensors, communications, and control tasks.
Key characteristics include an 84 MHz Arm Cortex-M4 core, a single-precision FPU, 128 KB of Flash memory, a 1.7 V to 3.6 V operating-supply range, and operation from -40 °C to 85 °C or 105 °C depending on the device variant and qualification. The Arm Cortex-M4 architecture supports DSP instructions and single-precision floating-point calculations, allowing control algorithms and signal-processing routines to run efficiently without a separate numerical processor.
The STM32F401 series is positioned as STMicroelectronics' high-performance access line within the STM32F4 family. Its architecture combines efficient instruction execution with a broad set of embedded resources, while the UFQFPN package reduces board footprint compared with larger leaded packages. The exact peripheral mix and I/O assignment should be checked against the manufacturer datasheet before assigning PCB signals or designing a new board.
Typical applications include compact sensor controllers, industrial monitoring modules, digital control equipment, communication-enabled accessories, and low-power embedded products. The Cortex-M4 DSP and FPU capabilities are particularly valuable for filtering, motion calculations, motor-control supervisory functions, and signal conditioning. The 48-pin package also allows a useful balance between processing capability and board-space reduction in dense assemblies.
For a new design, begin with the manufacturer's reference pinout and power-supply recommendations, then confirm that every required peripheral is available on the selected pins. Pay close attention to decoupling, clock configuration, unused inputs, exposed-pad assembly requirements, and the operating range selected for the final ordering code.
This product overview consolidates the confirmed core, memory, frequency, voltage, temperature, and package characteristics with application guidance, replacement analysis, and practical design considerations. It helps engineers evaluate fit before committing to a PCB layout or firmware platform.
ドロップイン代替品: STM32F401CBU6 — 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: STM32F401CBU6 （同一形状・フットプリント） — 相違点: Flash Memory, Package, Core, SRAM, Flash Organization.
STM32F401CCU6
✅ 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 →STM32F401CEU6
✅ 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 →STM32F401C8U6
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
STM32F401CBU6 最大定格＆電気的特性
| Product Type | 32-bit microcontroller MCU |
| Manufacturer | STMicroelectronics |
| Series | STM32F4 |
| Product Line | STM32F401 high-performance access line |
| Processor Core | Arm Cortex-M4 |
| Architecture | 32-bit |
| Maximum CPU Frequency | 84 MHz |
| Floating-Point Unit | Single precision |
| DSP Support | Arm Cortex-M4 DSP instructions |
| Flash Memory | 128 KB |
| Flash Organization | 128K x 8 bits |
| 動作電源電圧 | 1.7 V to 3.6 V |
| 動作温度範囲 | -40 °C to 85 °C or 105 °C |
| パッケージ | 48-pin UFQFPN, 7 x 7 mm |
| 実装タイプ | Surface mount |
| Program Memory Type | Flash |
| ART Accelerator | Supported |
STM32F401CBU6 48-pin ufqfpn, 7 x 7 mm ピン配置ガイド
STM32F401CBU6 (48-pin ufqfpn, 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: STM32F401CBU6.
詳細は データシート をご参照ください。
主な用途
STM32F401CBU6 の用途: 6 件s: Industrial Sensor and Condition Monitoring, Compact Motor-Control Supervisor, Digital Audio and Signal Processing, IoT Gateway and Communication Module, Portable Medical and Wearable Device, Automated Test and Measurement Equipment.
Industrial Sensor and Condition Monitoring
The STM32F401CBU6 fits compact condition-monitoring controllers because its 84 MHz Arm Cortex-M4 core executes acquisition logic and filtering with ample processing headroom, while the single-precision FPU supports calculations commonly used in vibration, temperature, and signal analysis. The device operates from 1.7 V to 3.6 V, allowing integration with low-voltage sensor and communications circuitry. Its 128 KB of Flash provides room for firmware, calibration tables, and protocol handlers. In an industrial product, designers should reserve the required timer, ADC, UART, and communication pins, provide local decoupling, and verify the selected peripheral assignments against the manufacturer pin-description tables.
おすすめ
Compact Motor-Control Supervisor
The STM32F401CBU6 is suitable as a supervisory controller in compact motor systems where an 84 MHz Cortex-M4 core can execute control algorithms and the single-precision FPU can accelerate filtering, transformations, and interpolations. The 1.7 V to 3.6 V operating range supports integration into regulated low-voltage control hardware, while the 48-pin UFQFPN package limits board footprint. Its 128 KB of Flash is appropriate for embedded control code, configuration data, and fault logging. The exact timer channels, encoder or sensor interfaces, and external protection requirements must be checked against the manufacturer documentation before assigning signals or selecting the external power stage.
おすすめ
Digital Audio and Signal Processing
The STM32F401CBU6 can serve compact audio and general signal-processing modules because the Arm Cortex-M4 core supports DSP instructions and includes a single-precision floating-point unit. At 84 MHz, these capabilities allow real-time filtering, mixing, modulation, or measurement routines to execute efficiently without a separate DSP controller. The 128 KB of Flash can hold DSP code and fixed configuration data, while the 1.7 V to 3.6 V supply range facilitates integration into low-voltage portable equipment. Designers should budget Flash for buffering and libraries, verify supported peripheral connections, and validate latency or signal-integrity requirements with representative processing loads.
おすすめ
IoT Gateway and Communication Module
The STM32F401CBU6 is appropriate for compact IoT gateways that must coordinate sensors, local control, and serial communications while remaining within a small board area. Its 84 MHz Cortex-M4 core provides processing capacity for protocol framing, data conversion, and background control, and the 128 KB of Flash accommodates embedded firmware and communication stacks. Operation from 1.7 V to 3.6 V permits use with common low-voltage rails and radio modules. A practical design should partition continuous-time and switched-capacitive supplies, use the manufacturer-recommended decoupling network, and confirm that the required UART, SPI, I2C, USB, or other interfaces are exposed on the selected package pins.
おすすめ
Portable Medical and Wearable Device
The STM32F401CBU6 can support portable health, diagnostic, or wearable products that combine sensor acquisition with local filtering and a low-power embedded interface. The 84 MHz Cortex-M4 core and single-precision FPU enable efficient signal conditioning, while the compact 48-pin UFQFPN package supports space-constrained assemblies. Its 1.7 V to 3.6 V operating range aligns with many low-voltage device architectures, and 128 KB of Flash can hold application and update-handling code. Medical and wearable designs still require application-specific validation of isolation, leakage, accuracy, battery behavior, and regulatory obligations; the MCU selection alone does not establish system compliance.
おすすめ
Automated Test and Measurement Equipment
The STM32F401CBU6 is useful in compact automated test equipment where an embedded controller must sequence measurements, evaluate data, and manage a local display, keypad, or communications link. Its 84 MHz Cortex-M4 core provides deterministic headroom for control routines, and the DSP and single-precision floating-point features support numerical processing of captured signals. The 128 KB of Flash can contain firmware, calibration coefficients, and test procedures, while the 1.7 V to 3.6 V range supports compact multi-rail instruments. Designers should confirm the required ADC, timer, and serial interfaces, and should isolate analog measurement paths from digital switching and clocking circuitry.
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: STM32F401CBU6 — 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 | STM32F401CCU6 | STM32F401CEU6 | STM32F401C8U6 |
|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 48-pin UFQFPN, 7 x 7 mm | 48-pin UFQFPN, 7 x 7 mm | 48-pin UFQFPN, 7 x 7 mm | 48-pin UFQFPN, 7 x 7 mm |
| Processor Core | Arm Cortex-M4 | Arm Cortex-M4 | Arm Cortex-M4 | Arm Cortex-M4 |
| Maximum CPU Frequency | 84 MHz | 84 MHz | 84 MHz | 84 MHz |
| Flash Memory | 128 KB | 256 KB | 512 KB | 64 KB |
| Flash Organization | 128K x 8 bits | 256K x 8 bits | 512K x 8 bits | 64K x 8 bits |
| Operating Supply Voltage | 1.7 V to 3.6 V | 1.7 V to 3.6 V | 1.7 V to 3.6 V | 1.7 V to 3.6 V |
| Floating-Point Unit | Single precision | Single precision | Single precision | Single precision |
| Operating Temperature Range | -40 °C to 85 °C or 105 °C | -40 °C to 85 °C or 105 °C | -40 °C to 85 °C or 105 °C | -40 °C to 85 °C or 105 °C |
主な差別化要因
- Balanced 128 KB configuration without a larger Flash footprint （vs STM32F401CEU6)
- Double the program memory of the lower-capacity same-family option （vs STM32F401C8U6)
- Compact 48-pin UFQFNA integration with 84 MHz processing （vs STM32F401CCU6)
設計ノート
Use the manufacturer package drawing and land-pattern dimensions when laying out the 48-pin UFQFPN. Place power and decoupling components close to their associated pins, keep the exposed thermal pad electrically consistent with the recommended schematic, and use a solder mask-defined or solder-defined pad according to the assembly process. Confirm pin-one orientation mechanically and electrically because package-side marking alone can be misread during inspection.
Design the 1.7 V to 3.6 V supply path so the MCU remains within its permitted range during startup, load changes, and temperature extremes. Follow the manufacturer guidance for bulk and high-frequency decoupling, and account for voltage droop at the device pins rather than only at the regulator output. If the board combines radio, switching, or high-current loads, use appropriate filtering or a separate low-noise rail to prevent disturbances from coupling into sensitive measurements.
Preserve the integrity of high-speed communication and clock signals by keeping traces short, providing continuous return paths, and avoiding routing sensitive inputs beneath switching nodes or noisy power-conversion components. Stagger termination or series damping only where signal-integrity analysis or measured ringing shows it is necessary. Boot, reset, debug, and programming-test points should be accessible without compromising the compact 7 x 7 mm placement.
A common mistake is treating members of the STM32F401 family as interchangeable solely because they share a 48-pin package. Before substituting a higher- or lower-Flash device, verify the exposed-pad connection, alternate-function mapping, power pins, oscillator requirements, peripheral availability, and firmware startup assumptions. For the 128 KB STM32F401CBU6, also reserve headroom for the bootloader, runtime library, update mechanism, and application code rather than relying on nominal Flash capacity alone.
コンプライアンス情報
The manufacturer product page confirms that the STM32F401CB family is active, but the available product information does not explicitly state the compliance status required for this ordering code. Confirm RoHS, REACH, lead-free, halogen-free, conflict-minerals, and automotive qualification status with STMicroelectronics before environmental or automotive release.