STM32G071CBU3 - 64MHz Cortex-M0+ MCU | STMicroelectronics
料号： STM32G071CBU3 ✓ 量产中STM32G071CBU3 概述
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.
直接替换替代料： STM32G071CBU3 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： STM32G071CBU3 （相同外形与封装尺寸） ——差异在于 Package, Product Type.
STM32G071CBU6
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →STM32G051CBU6
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32G041CBU6
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32G031CBU6
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32G071CBU3 最大额定值与电气特性
| 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 |
| 封装 | 48-pin UFQFPN, 7 x 7 mm |
| 安装类型 | Surface mount |
| Minimum Operating Temperature | -40 C |
| Product Series | STM32G0 |
| Device Subseries | STM32G071 |
STM32G071CBU3 48-pin ufqfpn, 7 x 7 mm 引脚配置指南
STM32G071CBU3（48-pin ufqfpn, 7 x 7 mm 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： STM32G071CBU3.
请参阅 数据手册 以查看完整引脚配置。
典型应用
STM32G071CBU3 适用于 6 应用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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： STM32G071CBU3 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Largest Flash capacity among the listed same-package STM32G0 options （对比 STM32G051CBU6)
- Substantially greater SRAM for protocol and control buffers （对比 STM32G041CBU6)
- Eightfold Flash capacity compared with the lowest-memory listed option （对比 STM32G031CBU6)
设计说明
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.
合规信息
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.