STM32G071CBU3 - 64MHz Cortex-M0+ MCU | STMicroelectronics
MPN： STM32G071CBU3 ✓ 啟用中STM32G071CBU3 概覽
A microcontroller is a semiconductor device that integrates a processor core, program memory, data memory, and peripherals into one package. In the product hierarchy, the STM32G071CBU3 is an MCU, a general-purpose integrated circuit, and a member of the STM32G0 microcontroller family. Its Arm Cortex-M0+ core provides a 32-bit processing architecture optimized for control tasks, while its integrated memories allow standalone operation without an external program or data memory device.
The principal device characteristics include a 64 MHz maximum CPU frequency, 128 KB of Flash storage, and 36 KB of SRAM. The 48-pin UFQFPN package measures 7 x 7 mm, making the device suitable for compact industrial, consumer, appliance, sensing, and embedded-control products. Its operating-voltage options include 1.8 V, 2.5 V, and 3.3 V, allowing integration with common low-voltage system rails.
The STM32G071 architecture provides a practical balance between processing speed, memory capacity, and board area. The Cortex-M0+ instruction set supports efficient control-oriented firmware, while the larger 128 KB Flash region can hold application code, boot routines, configuration data, and field-update logic. The 36 KB of RAM supports working buffers, communication stacks, and state management without requiring external static memory in many designs.
Typical applications include compact motor-control modules, digital control panels, industrial sensor interfaces, building equipment, low-cost communication equipment, and consumer appliances. The UFQFPN footprint favors designs where PCB area is constrained but a higher pin count is needed for external analog, communication, debug, or control connections.
A principal design consideration is exposed-pad thermal management. The thermal and electrical performance of the package depends on PCB copper, via density, airflow, and the load imposed by the selected power mode and peripherals. Follow the pin-description table, recommended land pattern, and decoupling guidance in the manufacturer documentation before assigning tracks or finalizing the PCB.
This page consolidates the verified core specifications, package information, commercial workflow, and same-family drop-in options into an engineering-focused reference. It also identifies the limits of cross-manufacturer substitution: footprint similarity alone does not establish peripheral equivalence, firmware compatibility, timing behavior, or safe production interchangeability.
直接替換替代品，適用於 STM32G071CBU3 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： STM32G071CBU3 （相同外形與佔位） — 差異在於 Package, Product Type.
STM32G071CBU6
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →STM32G051CBU6
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32G041CBU6
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32G031CBU6
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32G071CBU3 最大額定值與電氣特性
| Product Type | 32-bit microcontroller (MCU) |
| CPU Core | Arm Cortex-M0+ |
| Maximum CPU Frequency | 64 MHz |
| Architecture | 32-bit RISC |
| Flash Memory | 128 KB |
| Flash Organization | 128K x 8 bits |
| RAM | 36 KB |
| Operating Voltage Options | 1.8 V / 2.5 V / 3.3 V |
| 封裝 | 48-pin UFQFPN, 7 x 7 mm |
| 安裝類型 | Surface mount |
| Minimum Operating Temperature | -40 C |
| Product Series | STM32G0 |
| Device Subseries | STM32G071 |
STM32G071CBU3 48-pin ufqfpn, 7 x 7 mm 腳位配置指南
STM32G071CBU3（48-pin ufqfpn, 7 x 7 mm 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： STM32G071CBU3.
請參閱 資料表 以查看完整腳位配置。
典型應用
STM32G071CBU3 適用於 6 應用s: Compact Industrial Sensor Interface, Appliance Control Module, Low-Voltage Communications Controller, Digital Control Panel, Building Equipment Controller, Battery-Powered Embedded Device.
Compact Industrial Sensor Interface
The STM32G071CBU3 fits compact sensor-hub and industrial measurement products that need more memory than an entry-level Cortex-M0+ device without using a large microcontroller package. Its 64 MHz core supports responsive acquisition and control tasks, while 128 KB of Flash stores acquisition firmware, configuration logic, communication routines, and update support. The 36 KB of RAM can hold buffers and protocol state. Use the 48-pin UFQFPN for compact analog, digital, and communications connections, while allocating suitable exposed-pad vias and copper for reliable thermal performance.
推薦
Appliance Control Module
The STM32G071CBU3 is appropriate for compact appliance controllers that coordinate user inputs, relays, displays, sensors, and motor-control functions. A 64 MHz Cortex-M0+ core provides practical responsiveness for state machines and real-time control, and the 128 KB Flash capacity accommodates layered application and communication firmware. Its 36 KB SRAM reduces the need for external memory in typical control workloads. The 7 x 7 mm 48-pin UFQFPN also permits controller placement close to the power stage or sensor interface, although exposed-pad heat spreading must be designed into the PCB.
推薦
Low-Voltage Communications Controller
The STM32G071CBU3 can serve as the control processor in compact serial-communication equipment operating from 1.8 V, 2.5 V, or 3.3 V rails. Its 64 MHz core is suitable for protocol framing, buffering, address management, and supervisory logic, while 128 KB of Flash and 36 KB of RAM provide practical headroom for gateway or node firmware. The 48-pin UFQFPN supports a mix of communications, debug, and control connections in a small footprint. Confirm transceiver logic levels, timing tolerance, and firmware interrupt requirements against the final system specification.
推薦
Digital Control Panel
The STM32G071CBU3 is well matched to compact human-interface and digital-control panels that scan buttons, drive indicators, validate inputs, and communicate with a host controller. The Cortex-M0+ processor provides sufficient performance for deterministic scanning and debounce routines, while 128 KB of Flash can hold interface firmware, diagnostics, and configuration data. The 36 KB RAM supports display and communication buffers. Its 48-pin UFQFPN allows a space-efficient layout, but unused pins, ground connections, and exposed-pad vias must follow the manufacturer’s package and layout guidance.
推薦
Building Equipment Controller
The STM32G071CBU3 can be used in compact building-automation equipment such as room controllers, environmental-control modules, and distributed I/O nodes. A 64 MHz Cortex-M0+ core handles sensor polling, control decisions, event logging, and communications, while the larger 128 KB Flash and 36 KB RAM allow richer local functionality than entry-level alternatives. The 7 x 7 mm UFQFPN supports dense terminal-style boards with many mixed-signal connections. Production suitability still depends on the required temperature range, isolation, surge exposure, EMC mitigation, and regulatory testing.
推薦
Battery-Powered Embedded Device
The STM32G071CBU3 is suitable for compact battery-powered sensing and control products when the required processing and memory fit its 64 MHz Cortex-M0+ core, 128 KB Flash, and 36 KB RAM. The device’s multiple low-voltage options, including 1.8 V, 2.5 V, and 3.3 V, simplify integration with different battery and energy-harvesting architectures. Low-power behavior should be evaluated using the manufacturer’s mode-specific current specifications rather than assumed from the maximum clock frequency. The small UFQFPN package also minimizes board area in wearable-adjacent or distributed sensor nodes.
推薦
推薦產品摘要
工程參考資料，適用於 STM32G071CBU3 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | STM32G071CBU6 | STM32G051CBU6 | STM32G041CBU6 | STM32G031CBU6 |
|---|---|---|---|---|---|
| Brand | STMicroelectronics | 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 | 48-pin UFQFPN, 7 x 7 mm |
| CPU 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 |
| Flash Memory | 128 KB | 128 KB | 64 KB | 32 KB | 16 KB |
| RAM | 36 KB | 36 KB | 8.2 KB | 6.2 KB | 3.6 KB |
| Operating Voltage Options | 1.8 V / 2.5 V / 3.3 V | 1.8 V / 2.5 V / 3.3 V | 1.8 V / 2.5 V / 3.3 V | 1.8 V / 2.5 V / 3.3 V | 1.8 V / 2.5 V / 3.3 V |
| Ordering and Temperature Code | CBU3 | CBU6 | CBU6 | CBU6 | CBU6 |
| Processor Architecture | 32-bit | 32-bit | 32-bit | 32-bit | 32-bit |
主要差異化特點
- Largest Flash capacity among the listed same-package STM32G0 options (對比STM32G051CBU6)
- Substantially greater SRAM for protocol and control buffers (對比STM32G041CBU6)
- Eightfold Flash capacity compared with the lowest-memory listed option (對比STM32G031CBU6)
設計說明
Treat the exposed thermal pad as a mandatory PCB thermal path rather than an optional copper area. Follow the manufacturer land pattern and place a recommended array of thermal vias beneath the pad while keeping those vias clear of sensitive routing. Copper area and via density influence heat spreading from the 64 MHz Cortex-M0+ core, and ambient temperature, switching activity, supply voltage, and peripheral load determine the actual junction condition. Validate the final assembly using the package thermal model and worst-case operating mode.
Place all required decoupling capacitors adjacent to their associated supply pins and keep the high-current return path through the exposed pad electrically short. Separate sensitive analog inputs from fast digital or clock routes where the board architecture permits. The 48-pin UFQFPN has a 7 x 7 mm body, so courtyard, paste, solder mask, and pad-clearance tolerances must be checked against the current manufacturer package drawing before PCB release.
Do not select a same-footprint MCU solely from the number of pins. For every alternative, verify the exact pin names, exposed-pad connection, power pins, ground pins, debug functions, oscillator requirements, boot behavior, peripheral assignments, and maximum pin voltages. Moving from STM32G071CBU3 to a lower-memory G0 device also requires a complete linker, startup, and firmware-memory review because the Flash and SRAM reductions can be substantial.
合規資訊
The product listings identify STMicroelectronics as the manufacturer but do not state the device-specific RoHS, REACH, automotive-qualification, lead-free, halogen-free, or conflict-minerals status.