STM32F103CBU6 - 72MHz Cortex-M3 128KB MCU | STMicroelectronics
料号： STM32F103CBU6 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.7473 | $7.75 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
STM32F103CBU6 概述
A microcontroller is a programmable semiconductor that integrates a CPU core, memory, peripherals, and interfaces into a single embedded-control component. The STM32F103 belongs to the ARM Cortex-M microcontroller class and the broader embedded-processor hierarchy: MCU, microcontroller, embedded processor, and semiconductor. This device family is intended for systems that need deterministic control, serial communications, analog measurement, and moderate firmware complexity without a separate processor.
Key verified features include a 72 MHz ARM Cortex-M3 CPU, 1.25 DMIPS/MHz Dhrystone 2.1 performance at zero-wait-state memory access, single-cycle multiplication, hardware division, and 128 KB of Flash. The family feature description also identifies USB, CAN, seven timers, two ADCs, and nine communication interfaces. These peripherals support connected industrial controls, USB peripherals, CAN nodes, measurement systems, and compact embedded products.
The STM32F103CBU6 uses a 48-UFQFPN package with an exposed pad, enabling a compact PCB footprint and improved heat spreading when the pad is properly connected to the ground plane. The MCU is not a power semiconductor, so a safe-operating-area chart is not applicable. Supply voltage, current, temperature limits, pin functions, and detailed electrical limits are not fully included in the supplied verified data and must be confirmed from the manufacturer datasheet before design release.
Typical applications include industrial automation, USB-enabled embedded controls, CAN-connected equipment, motor and motor-control systems, instrumentation, and low-cost development platforms. Its 72 MHz processing rate and communication peripherals make it suitable for control loops that require more performance than a simple 8-bit MCU while retaining a broad embedded peripheral set. The 48-pin package also offers more I/O and interface options than smaller 32-pin or 20-pin devices.
For a new design, preserve the exposed-pad land pattern, follow the manufacturer's decoupling and layout guidance, and verify pin multiplexing, clock configuration, peripheral assignment, and firmware support against the exact datasheet and reference manual. This page combines verified distributor specifications, sourced replacement information, comparison structure, and practical design guidance; it does not substitute for an electrical sign-off of the manufacturer documentation.
直接替换替代料： STM32F103CBU6 ——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： STM32F103CBU6 （相同外形与封装尺寸） ——差异在于 Package, Timers, ADC, Flash Memory, RoHS Status.
快速对比工具——选择替代料号进行并排对比：
STM32F103CBU6
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →STM32F103CBT6
✅ 直接替换✓ 有现货
$3.2 / 个
查看数据手册 →STM32F103C6T6
✅ 直接替换✓ 有现货
$2.05 / 个
查看数据手册 →GD32F103C8T6
✅ 直接替换📋 参考替代料（不在目录中）
APM32F103C8T6
✅ 直接替换📋 参考替代料（不在目录中）
AT32F403ARGT7
✅ 直接替换✓ 有现货
$0.9 / 个
查看数据手册 →STM32F103CBU6 最大额定值与电气特性
| CPU Core | ARM Cortex-M3, 32-bit |
| Maximum CPU Frequency | 72 MHz |
| Flash Memory | 128 KB (128K x 8) |
| CPU Performance | 1.25 DMIPS/MHz, Dhrystone 2.1, at 0 wait-state memory access |
| Multiplier | Single-cycle hardware multiplication |
| Divider | Hardware division |
| USB Interface | USB |
| CAN Interface | CAN |
| Timers | 7 timers |
| ADC | 2 ADCs |
| Communication Interfaces | 9 communication interfaces |
| 封装 | 48-UFQFPN, 7 mm x 7 mm |
| Exposed Pad | Exposed pad |
| 安装类型 | Surface mount |
| Product Family | STM32F1 performance line |
| Datasheet Description | Medium-density performance line ARM-based 32-bit MCU |
| RoHS | unknown |
| REACH | unknown |
STM32F103CBU6 48-ufqfpn, 7 mm x 7 mm 引脚配置指南
STM32F103CBU6（48-ufqfpn, 7 mm 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： STM32F103CBU6.
请参阅 数据手册 以查看完整引脚配置。
典型应用
STM32F103CBU6 适用于 6 应用s: USB-Enabled Embedded Control, CAN-Connected Industrial Equipment, Industrial Automation Controller, Motor and Motor-Control Systems, Instrumentation and Data Acquisition, Communication Gateway and Protocol Bridge.
USB-Enabled Embedded Control
The STM32F103CBU6 fits compact USB-connected controllers because the verified family data identifies USB, a 72 MHz ARM Cortex-M3 core, 128 KB Flash, seven timers, and two ADCs. The MCU can manage protocol handling, state machines, control outputs, and sensor acquisition in one device. Its 48-UFQFPN footprint provides more pin options than a low-pin-count controller while keeping the design compact. The main design consideration is USB transceiver and signal-integration planning, together with firmware validation for the exact USB peripheral configuration.
推荐
CAN-Connected Industrial Equipment
The STM32F103CBU6 is suitable for CAN-connected industrial equipment because the verified STM32F103 family includes CAN, nine communication interfaces, timers, and ADCs. It can coordinate remote sensors, actuator commands, diagnostic data, and local control loops while retaining 128 KB of Flash for application firmware. The 72 MHz Cortex-M3 core supports responsive protocol and control tasks. Design the CAN transceiver, termination, isolation, and protection network separately, and validate timing against the selected bus topology.
推荐
Industrial Automation Controller
The STM32F103CBU6 works as an industrial automation controller when a design needs a 32-bit CPU, 72 MHz performance, USB or CAN communications, two ADCs, and multiple timers. It can execute sequencing logic, monitor analog inputs, drive discrete outputs, and communicate with supervisory equipment. The 48-pin UFQFPN package provides a practical pin count for mixed control and communications. Production designs should follow the manufacturer reference manual for alternate-function mapping, clock setup, reset behavior, decoupling, and exposed-pad implementation.
推荐
Motor and Motor-Control Systems
The STM32F103CBU6 can serve in motor-control and embedded motion systems because its Cortex-M3 core reaches 72 MHz and the verified family data identifies seven timers and two ADCs. Timers support precise counting and timing functions, while ADCs can acquire current or position-related analog signals. The MCU can coordinate control algorithms, communication, and protection logic. Power-stage design, gate-drive timing, current sensing, thermal protection, and motor-specific safety requirements remain external to the MCU and must be validated independently.
推荐
Instrumentation and Data Acquisition
The STM32F103CBU6 is appropriate for instrumentation and data-acquisition modules requiring two ADCs, nine communication interfaces, 128 KB Flash, and deterministic 72 MHz processing. It can sample analog channels, apply calibration and filtering, execute control logic, and forward results through USB, CAN, or other available serial interfaces. The 48-pin package provides more I/O flexibility for sensor inputs and communication signals. Input filtering, reference design, sensor excitation, calibration storage, and communication isolation should be specified for the final measurement system.
推荐
Communication Gateway and Protocol Bridge
The STM32F103CBU6 can act as a compact communication gateway because the verified family data lists USB, CAN, nine communication interfaces, and a 72 MHz Cortex-M3 core. A gateway can translate between local serial links, packet queues, configuration data, and diagnostic messages while using the 128 KB Flash for firmware. The MCU is suitable when real-time protocol handling is needed without a higher-power application processor. For deployment, verify baud-rate support, buffering, timeout behavior, bootloader strategy, and electrical protection on every external communication line.
推荐
推荐产品汇总
工程参考数据： STM32F103CBU6 ——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 | STM32F103CBU6 | STM32F103CBT6 | STM32F103C6T6 | GD32F103C8T6 | APM32F103C8T6 |
|---|---|---|---|---|---|---|
| Package | 48-UFQFPN (7x7 mm) | 48-UFQFPN (7x7 mm) | 48-UFQFPN (7x7 mm) claimed in alternatives search | 48-UFQFPN (7x7 mm) claimed in alternatives search | 48-LQFP | 48-LQFP |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | GigaDevice | GigaDevice |
关键差异点
- Verified 72 MHz Cortex-M3 performance （对比 GD32F103C8T6)
- Documented 128 KB Flash configuration （对比 STM32F103C6T6)
- Verified family peripheral set （对比 APM32F103C8T6)
设计说明
Reproduce the 48-UFQFPN footprint and exposed-pad land pattern from the exact STM32F103CBU6 package drawing. Keep the MCU, decoupling capacitors, and any oscillator or reset components close to their associated pins. Route high-current and high-speed communication paths away from sensitive analog inputs, and provide a continuous ground reference. The verified data confirms the 7 mm by 7 mm package and exposed pad but does not provide the complete recommended land pattern.
Before power-up, verify the STM32F103CBU6 supply-voltage range, decoupling values, regulator startup behavior, and maximum current from the manufacturer datasheet; those electrical values are not present in the supplied verified snippets. Place bulk and local bypass capacitance according to the reference design and check startup margin across temperature. Do not infer supply limits from the 72 MHz CPU specification, since clock rate and operating voltage are separate constraints.
USB and CAN interfaces need deliberate signal-integrity planning. Keep USB traces short, impedance controlled, and referenced to a continuous ground plane; route CAN differential traces with appropriate geometry and terminate according to the network design. Isolate clocks, high-speed edges, switching supplies, and motor-drive return currents from ADC and communication paths. The verified data confirms the presence of USB and CAN but does not provide trace-impedance or timing values.
合规信息
The supplied verified data does not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status. AEC-Q100 is marked not_applicable because no automotive qualification is stated; this is not an automotive qualification claim.
