STM32F103TBU6, STMicroelectronics, 32‑bit MCU Microcontroller

STMicroelectronics, ARM Cortex‑M3 core, 32‑bit MCU microcontroller. It belongs to the medium‑density F103 series. The TBU6 variant comes in LQFP‑36 package. It is a well‑established legacy microcontroller widely used in industrial applications.

Key Parameters

• Core: ARM Cortex‑M3, up to 72 MHz

• Flash: 128 KB for program storage

• RAM: 20 KB SRAM

• Package: LQFP‑36, 36 pins

• Supply Voltage: 2.0 V ~ 3.6 V

• I/O Ports: 26 general‑purpose GPIOs

Peripherals

• 3 × 12‑bit ADC (up to 16 channels)

• 4 general‑purpose timers + 1 advanced‑control timer (for PWM output and motor driving)

• Communication Interfaces: 3 × USART, 2 × SPI, 2 × I2C, CAN 2.0B, USB2.0 Full‑Speed

• Operating Temperature: ‑40 ℃ ~ +85 ℃, industrial grade

Note: No hardware Ethernet, no FPU floating‑point unit.

Main Functions

• Main‑control operation: 32‑bit microcontroller for logic operation, data acquisition and application control.

• Analog acquisition: ADC for voltage sensor signal sampling.

• PWM output: Motor control, LED dimming and servo drive.

• Communication: Connect sensor modules via UART, I2C and SPI; interface with industrial equipment over CAN bus; implement virtual COM port via USB.

• Timers for timing, counting and pulse capture.

• GPIOs to drive relays, keys and indicator LEDs.

Applications

• Consumer: Small home appliances, handheld devices, Bluetooth peripheral controllers.

• Industrial: Simple industrial control boards, sensor acquisition modules, relay control boards.

• Security: Access control systems, alarm modules.

• Drones / Robots: Simple controllers (limited computing power; not suitable for complex flight controllers).

• Learning & Development: Classic STM32 F1‑series model for beginner training.