STM32F091CBU6 - 48MHz Cortex-M0 MCU 128KB Flash | STMicroelectronics
部品番号: STM32F091CBU6 ✓ 生産中STM32F091CBU6 概要
A microcontroller is a programmable system-on-chip that integrates a processor core, nonvolatile program memory, volatile working memory, peripherals, and communication interfaces on one package. Within the hierarchy of embedded semiconductors, the STM32F091CBU6 is an ARM Cortex-M0 microcontroller, an STM32 embedded MCU, and a member of the STM32F0 series. Its compact package and broad peripheral set support space-constrained industrial, consumer, communications, and control applications.
Key features include a maximum 48 MHz operating frequency, 128 KB of flash, 32 KB of SRAM, and a 2 V to 3.6 V supply range. The device provides a 12-bit ADC, a 12-bit DAC, 12 timers, and CAN support according to the available product summaries. The 38 I/O provide practical connectivity for sensors, actuators, communication transceivers, human-interface interfaces, and board-level control signals within the 48-pin UFQFPN footprint.
The STM32F091CBU6 combines an ARM Cortex-M0 RISC core with integrated memory and peripherals intended for embedded control workloads. Its 32-bit architecture provides 32-bit arithmetic and addressing, while the 48 MHz operating point supports time-sensitive control loops and responsive communication handling. The integrated CRC calculation unit, real-time clock functions, and communication peripherals broaden its utility in compact industrial controllers and connected products.
Typical uses include CAN-connected industrial controls, compact sensor hubs, motor and actuator controllers, consumer appliances, and communication equipment. It is particularly appropriate when a design benefits from 128 KB of embedded flash and 32 KB of SRAM but does not require the larger memory or faster core of higher STM32 families. For CAN networks, an external transceiver remains necessary between the MCU and physical bus.
Designers should verify the complete UFQFPN land pattern, exposed-pad connection, decoupling requirements, and peripheral pin assignments against the manufacturer documentation before layout. Because the verified sources identify the device and package but do not provide the complete numbered pinout, pin-level assignment should not be inferred from the generic QFN drawing. Firmware migration also requires validation of clocks, interrupts, peripherals, and board-level support rather than assuming that package compatibility alone guarantees identical behavior.
This page consolidates the verified STM32F091CBU6 specifications, distributor references, same-package comparison candidates, and practical selection guidance. It distinguishes confirmed electrical and packaging facts from details that still require the manufacturer datasheet, helping engineers evaluate this MCU without treating incomplete cross-reference snippets as a substitute for pin-level qualification.
ドロップイン代替品: STM32F091CBU6 — 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: STM32F091CBU6 （同一形状・フットプリント） — 相違点: Package.
STM32F072CBU6
✅ 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 →STM32F042C4U6
✅ ドロップイン📋 参考代替品（カタログ未掲載）
STM32F091CBU6 最大定格＆電気的特性
| Product Type | 32-bit ARM Cortex-M0 microcontroller |
| Maximum CPU Frequency | 48 MHz |
| Architecture | 32-bit RISC |
| Flash Memory | 128 KB |
| Flash Organization | 128K x 8 bits |
| SRAM | 32 KB |
| 動作電源電圧 | 2 V to 3.6 V |
| GPIO Count | 38 I/O |
| ADC Resolution | 12-bit |
| DAC Resolution | 12-bit |
| Timer Count | 12 timers |
| Communication Interface | CAN |
| Peripheral Unit | CRC calculation unit |
| パッケージ | 48-pin UFQFPN, 7 x 7 mm |
| 実装タイプ | Surface mount |
| Manufacturer Product Family | STM32F091xB/xC |
STM32F091CBU6 48-pin ufqfpn, 7 x 7 mm ピン配置ガイド
STM32F091CBU6 (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: STM32F091CBU6.
詳細は データシート をご参照ください。
主な用途
STM32F091CBU6 の用途: 6 件s: CAN-Connected Industrial Control, Compact Sensor Hub, Motor and Actuator Control, Consumer Appliance Controller, Communication Equipment, Data Acquisition and Test Module.
CAN-Connected Industrial Control
The STM32F091CBU6 fits compact CAN controllers because it combines a 48 MHz ARM Cortex-M0 core, CAN support, 38 I/O, and a 12-bit ADC in a 48-pin UFQFPN package. The processor can execute control logic and acquire analog process inputs while exchanging data over the CAN bus. Its 128 KB flash provides room for application firmware, configuration handling, and communication routines, while 32 KB of SRAM supports buffers and working state. The MCU still requires an external CAN transceiver, proper bus termination, and a correctly decoupled 2 V to 3.6 V supply. Engineers should confirm the alternate-function mapping for each required CAN and digital signal against the manufacturer pinout before layout.
おすすめ
Compact Sensor Hub
The STM32F091CBU6 is suitable for a compact sensor hub that samples analog inputs and coordinates local peripherals. Its verified 12-bit ADC supports embedded measurement, while the 48 MHz Cortex-M0 core provides headroom for filtering, calibration, and protocol handling. Thirty-two kilobytes of SRAM can hold working buffers, and 128 KB of flash can store firmware and calibration tables. The 7 x 7 mm UFQFPN package also helps reduce board area in distributed monitoring equipment. Designers must confirm the ADC reference, input impedance, acquisition requirements, and available pin assignments using the manufacturer documentation. They should also add local bypassing and provide a stable clock source appropriate to the selected operating mode.
おすすめ
Motor and Actuator Control
The STM32F091CBU6 can serve as the control MCU in compact motor and actuator systems where fast deterministic control and mixed analog and digital I/O are required. Its verified 48 MHz Cortex-M0 core, 12 timers, 12-bit ADC, 12-bit DAC, and 38 I/O allow the controller to interpret feedback signals, generate timing references, and supervise external drivers. The 128 KB flash and 32 KB SRAM support control code, parameter storage, and diagnostic buffers. Because the MCU does not directly drive practical motor power, an appropriate gate driver or power stage remains required. Thermal design, current limits, fault handling, and protection features must be evaluated for the exact actuator, while pin reuse must be checked before assigning timer outputs and analog inputs.
おすすめ
Consumer Appliance Controller
The STM32F091CBU6 is well matched to compact consumer appliances that need a capable control core, local storage, analog measurement, and multiple peripheral interfaces without using a higher-memory MCU. The 48 MHz ARM Cortex-M0 core handles UI state and control routines, the 12-bit ADC measures sensor inputs, and the DAC can provide an analog output where required. Its 128 KB flash and 32 KB SRAM are useful for embedded firmware and working buffers. The compact 48-pin UFQFPN package supports dense, cost-sensitive assemblies. Designers should define the required communication interfaces, bootloader method, brownout behavior, and actuator drivers before schematic freeze, and they should use the manufacturer documentation to confirm package-specific pin multiplexing and exposed-pad implementation.
おすすめ
Communication Equipment
The STM32F091CBU6 fits compact communication equipment that requires a fast 32-bit control processor, moderate embedded memory, CAN capability, and a small package. The 48 MHz Cortex-M0 core can service interrupts and protocol tasks, while 128 KB of flash holds firmware and 32 KB of SRAM accommodates packet or message buffers. The 12-bit ADC and DAC support monitoring and test functions, and the 38 I/O provide configuration, status, and interface signals. For network-facing products, engineers must add the appropriate physical-layer transceivers and verify the selected peripheral instance, alternate functions, and clock configuration against the manufacturer documentation. Firmware should also include robust communication framing, watchdog use, and recovery behavior rather than relying on device pin compatibility alone.
おすすめ
Data Acquisition and Test Module
The STM32F091CBU6 is appropriate for compact data-acquisition and test modules that need an ADC, DAC, timers, digital I/O, and local control in one device. The verified 12-bit ADC supports analog measurement, the 12-bit DAC supports stimulus or reference generation, and the 12 timers help organize acquisition and output timing. A 48 MHz Cortex-M0 core can process samples and handle control logic, while 32 KB of SRAM provides data buffers. Its 48-pin UFQFPN package reduces board footprint in multi-channel or distributed test systems. Signal-chain designers should separately consider analog input conditioning, reference accuracy, protection, bandwidth, grounding, and calibration. The exact pin map and exposed-pad connection must be obtained from STMicroelectronics documentation before layout.
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: STM32F091CBU6 — 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 | STM32F072CBU6 | STM32F042C4U6 |
|---|---|---|---|
| Manufacturer | 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 |
主な差別化要因
- Higher verified memory capacity （vs STM32F042C4U6)
- Integrated CAN, ADC, and DAC resource set （vs STM32F072CBU6)
- 48 MHz Cortex-M0 processing performance （vs STM32F042C4U6)
設計ノート
Do not assign MCU functions from the generic UFQFPN outline alone. Before routing, download the STM32F091CBU6 package drawing and pin table, then mark every power, ground, analog, oscillator, reset, debug, and communication connection on the schematic. The exposed-pad implementation must follow the manufacturer land-pattern guidance rather than an assumed QFN pattern. Confirm pin multiplexing and remapping in the device documentation because the same package does not guarantee identical behavior across STM32F0 members.
The verified operating range is 2 V to 3.6 V, so the power tree should provide a regulated rail within that range with appropriate transient margin. Place the required bypass capacitors at the device supply pins using the datasheet's placement and stability guidance. Because this is a digital microcontroller, the soa field is not applicable, but supply sequencing, brownout behavior, and exposed-pad grounding still require deliberate review.
Separate analog and digital return paths where the 12-bit ADC is used. Keep the analog source, reference, and ADC input traces short, maintain continuous reference-ground geometry under the analog section, and avoid routing switching or high-current signals beneath sensitive inputs. The 48 MHz maximum clock and the ADC require a clean layout, but the verified data does not provide complete high-frequency timing or impedance guidance, so use the manufacturer reference design and evaluation-board layout where available.
Package compatibility alone does not establish a safe MCU replacement. For STM32F072CBU6 or STM32F042C4U6, compare the complete pin matrix, reset and boot behavior, oscillator limits, ADC and DAC channels, CAN electrical interface, timer resources, debug access, flash organization, and firmware startup code. Also confirm regulator and exposed-pad requirements. Perform a controlled board-level validation if the alternative changes clocking, interrupts, low-power modes, or peripheral assignments.
コンプライアンス情報
The supplied search results refer to compliance comparisons but do not provide extractable compliance declarations for the target. Compliance values are therefore recorded as unknown rather than inferred.
