STM32F103CBT6, STMicroelectronics, a 32-bit general-purpose MCU (microcontroller) based on the ARM Cortex-M3 core, from the classic STM32F1 series, packaged in LQFP48, is a popular entry-level industrial main controller.

Core parameters

Kernel: ARM Cortex-M3, up to 72MHz, with hardware single-precision FPU, DMIPS: 90

Storage: Flash 128KB, SRAM 20KB

Power supply voltage: 2.0V ~ 3.6V

Temperature range: -40℃ ~ +85℃ (industrial grade, not AEC-Q100 automotive grade)

Package: LQFP-48, 37-way IO pins

Timers: 4 general-purpose 16-bit timers, 1 advanced PWM timer (capable of motor drive PWM output)

Debug interface: SWD/JTAG

Model suffix interpretation: C=LQFP48; B=128KB Flash; T = Temperature - 40~85℃; 6=MSL3 humidity level

Complete ordering part number: STM32F103CBT6TR (tape and reel packaging)

Analog peripherals: 2-channel 12-bit ADC (10 channels), 1-channel voltage comparator

Communication interfaces: 2 SPI channels, 2 I2C channels, 3 USART channels, 1 CAN channel, USB 2.0 full-speed

Main functions

Universal embedded main controller, Cortex-M3 core, complete peripherals, extremely rich development materials, mature ecosystem, and cost-friendly.

The advanced timer can output multiple PWM signals, which are used for motor driving, LED dimming, and simple electronic speed control for drones.

Supports RTOS (Real-Time Operating System), suitable for simple multitask control.

Built-in watchdog to prevent program drift and enhance the long-term operational stability of the device.

CAN bus interface: for interfacing with industrial buses and device networking.

USB full-speed interface: capable of functioning as a USB virtual serial port and facilitating USB device communication.

ADC collects analog signals, interfacing with temperature, humidity, pressure, and gas sensors to collect analog data.

Scope of Application

Unmanned Aerial Vehicle (UAV) / Robot

Simple flight control auxiliary MCU, small electric motor controller, gimbal control board

Low-level control of small AGVs and wheeled robots

IoT & Smart Home

Smart home controller, sensor module main controller

Wireless acquisition node

Industrial Automation

Industrial acquisition board, sensor signal acquisition module

Simple PLC, valve controller, relay control board

Instruments, meters, and testing equipment motherboards

consumer electronics

Small household appliance main controller, LED lighting driver, portable detector

Learning development board, prototype verification for universities/R&D engineers

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STM32F103 is a classic "national MCU", frequently used in project prototyping and small devices; however, many new high-end projects have upgraded to the F4/H7 series;

Advantages: low price, abundant resources, low development threshold; disadvantages: limited computing power, not suitable for complex IMU attitude solution (F4/H7 is recommended for complex attitude solution);

Note: Not compliant with automotive standards, cannot be used in automotive safety projects.

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For technical and business inquiries, please contact Mr. Zhang at 13430464310