STM32F103CBT7 - 72MHz Cortex-M3 128KB MCU | STMicroelectronics
料号： STM32F103CBT7 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.7962 | $3.80 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
STM32F103CBT7 概述
A microcontroller is a semiconductor that integrates a processor core, memory, and peripherals into one programmable device. The STM32F1 family belongs to the ARM Cortex-M embedded ecosystem, where the MCU executes firmware from flash and uses peripherals to interface with sensors, communication networks, motors, displays, and control systems. STM32F103CBT7 is specifically associated with the medium-density performance line and is suitable for designs where a Cortex-M3 core and compact 48-pin implementation are required.
The key verified characteristics are a 32-bit Cortex-M3 processor, 72MHz maximum operating frequency, 128KB flash, and a 48-LQFP 7x7mm package. These values make the device appropriate for industrial controllers, communication modules, motor-control peripherals, instrument interfaces, and embedded automation products. The LQFP package also provides a practical surface-mount format for prototypes and medium-density production assemblies.
The STM32F103CBT7 is a programmable embedded platform rather than a fixed-function controller. Firmware determines the behavior of its GPIO, timers, serial interfaces, analog functions, and interrupt-driven control loops. Designers should therefore validate the complete peripheral configuration, clock plan, memory usage, and board-level power requirements against the applicable STMicroelectronics documentation before production release.
Typical applications include connected industrial sensors, compact motor-control boards, USB or UART communication modules, data acquisition equipment, and embedded controller platforms. The 72MHz Cortex-M3 core provides processing headroom for control tasks, while 128KB flash provides room for application code and bootloader logic. The 48-LQFP package remains useful where a moderate pin count and easy visual inspection are preferred over a very small package.
When designing around STM32F103CBT7, preserve the required decoupling and oscillator layout recommended by the manufacturer documentation, and confirm the exact peripheral pin mapping for the selected board. Do not assume that a competitor with a similar package name is electrically or firmware compatible without checking pin functions, voltage limits, clock behavior, and peripheral differences. This page combines verified distributor data with clearly marked data gaps rather than estimating missing electrical details.
This product reference is intended to help engineers identify the correct MCU, compare possible replacements, and plan an embedded design. The most important engineering checks are package compatibility, firmware portability, peripheral coverage, clock configuration, and supply availability.
直接替换替代料： STM32F103CBT7 ——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： STM32F103CBT7 （相同外形与封装尺寸） ——差异在于 Core, Package, Series.
快速对比工具——选择替代料号进行并排对比：
GD32F103C8T6
✅ 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 →WCH32F103C8T6
✅ 直接替换📋 参考替代料（不在目录中）
STM32F103CBT7 最大额定值与电气特性
| Core | ARM Cortex-M3 |
| Architecture | 32-bit |
| Maximum Frequency | 72 MHz |
| Flash Memory | 128 KB |
| Flash Organization | 128K x 8 |
| Series | STM32F1 |
| Product Line | Medium-density performance line |
| 封装 | 48-LQFP 7x7 mm |
| 安装类型 | Surface Mount |
STM32F103CBT7 48-lqfp 7x7 mm 引脚配置指南
STM32F103CBT7（48-lqfp 7x7 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： STM32F103CBT7.
请参阅 数据手册 以查看完整引脚配置。
典型应用
STM32F103CBT7 适用于 6 应用s: Industrial Sensor Controller, Compact Motor-Control Module, Serial Communication Module, Data-Acquisition Controller, Embedded Automation Controller, Instrument and Test Controller.
Industrial Sensor Controller
STM32F103CBT7 fits compact industrial sensor nodes that need a 32-bit Cortex-M3 core for acquisition, condition checking, local control, and communication. Its verified 72MHz operating speed provides a practical processing platform for interrupt-driven sensor loops, while 128KB flash leaves room for application code and a small bootloader. The 48-LQFP 7x7mm package is also convenient for boards that need a moderate pin count and straightforward assembly. Before finalizing the design, verify the exact ADC, timer, UART, and supply specifications required by the sensor node.
推荐
Compact Motor-Control Module
STM32F103CBT7 is suitable for small motor-control and actuator-control modules where a real-time Cortex-M3 execution engine is needed alongside programmable timers and digital I/O. The verified 72MHz core frequency supports fast control-loop computation, and the 128KB flash capacity accommodates application logic, parameter storage, and firmware updates. The 48-LQFP package provides a manageable footprint for a separate controller board. Motor designs must still verify timer channels, PWM behavior, protection inputs, current sensing, thermal limits, and the exact peripheral resources of the chosen STM32F103 variant.
推荐
Serial Communication Module
STM32F103CBT7 can be used in compact serial gateways and protocol-conversion modules that combine firmware processing with UART, SPI, or other communication functions. Its 32-bit Cortex-M3 architecture and verified 72MHz maximum frequency are useful for framing, buffering, filtering, and protocol state machines. The 128KB flash capacity is suitable for a moderate firmware image without relying on external program memory. Because the supplied snippets do not enumerate the exact peripheral configuration or electrical thresholds, verify UART levels, pin multiplexing, ESD protection, and interface timing in the manufacturer documentation.
推荐
Data-Acquisition Controller
STM32F103CBT7 is a reasonable platform for compact data-acquisition controllers that sample sensors, perform digital filtering, maintain records, and forward results through a serial link. The verified 72MHz Cortex-M3 core provides processing capacity for control and communication tasks, while 128KB flash supports firmware, lookup tables, and protocol code. The 48-LQFP 7x7mm package is useful when a design needs accessible leads and a moderate number of connections. Confirm the ADC resolution, sample-rate requirements, analog input range, timer availability, and memory requirements because those values are not present in the supplied verified data.
推荐
Embedded Automation Controller
STM32F103CBT7 can serve as the central controller in a compact automation or equipment-control module, coordinating digital inputs, outputs, timing functions, and external communications. Its confirmed 32-bit Cortex-M3 core, 72MHz operation, and 128KB flash provide a capable platform for deterministic embedded logic without moving to a larger processor. The 48-LQFP package supports a conventional surface-mount layout and provides enough external access for typical controller boards. Validate the exact I/O count, pin multiplexing, watchdog behavior, supply voltage, and environmental requirements against the manufacturer datasheet.
推荐
Instrument and Test Controller
STM32F103CBT7 is suitable for compact instrument and test controllers that need local sequencing, measurement handling, status reporting, and control-panel interfaces. The 72MHz Cortex-M3 processor can execute control code while the 128KB flash stores firmware and calibration-related application logic. Its 48-LQFP 7x7mm package makes it practical for a small controller PCB with external connectors, status LEDs, and interface components. For instrumentation applications, verify ADC performance, analog reference requirements, timer accuracy, communication interfaces, and low-noise layout guidance in the exact STM32F103CBT7 documentation.
推荐
推荐产品汇总
工程参考数据： STM32F103CBT7 ——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 | GD32F103C8T6 | AT32F403A | WCH32F103C8T6 |
|---|---|---|---|---|
| Package | 48-LQFP 7x7 mm | 48-LQFP 7x7 mm candidate; verify exact variant | 48-LQFP 7x7 mm candidate; verify exact variant | 48-LQFP 7x7 mm candidate; verify exact variant |
| Series / Family | STM32F1 | GD32F103 family candidate | AT32 family candidate | WCH32F103 family candidate |
关键差异点
- Confirmed STM32F1 identity （对比 GD32F103C8T6)
- Confirmed 128KB flash organization （对比 AT32F403A)
- Known package identity （对比 WCH32F103C8T6)
设计说明
Confirm the exact STM32F103CBT7 supply-voltage range, regulator tolerances, decoupling values, and power-supply sequencing requirements from the manufacturer datasheet before layout. The supplied verified data does not include voltage limits or current consumption, so do not select a regulator by extrapolating from another STM32F1 variant. Place required bulk and bypass capacitors close to the supply and ground pins according to the reference layout.
Use the exact STM32F103CBT7 pinout and package drawing as the source of truth for the PCB footprint. The verified package is 48-LQFP 7x7mm, but the supplied data does not include the complete pin table or pin-1 orientation. Check the manufacturer land pattern, pin numbering, exposed thermal considerations, and assembly tolerances rather than relying on a generic 48-LQFP footprint.
Do not treat a similar STM32F103 or GD32F103-family part as automatically interchangeable. Verify flash and RAM size, maximum clock, pin multiplexing, peripheral mapping, interrupt behavior, clock configuration, startup code, and toolchain support. The supplied cross-reference material identifies compatibility only at a family or candidate level, so a production substitution requires schematic review, firmware regression testing, and hardware validation.
合规信息
Compliance fields were not present in the supplied verified data and must be confirmed from the manufacturer or authorized distributor documentation.
