company blog about ST STM32F103CBT6 32-Bit Single-Core 72MHz ARM Cortex-M3 MCU

ST STM32F103CBT6 32-Bit Single-Core 72MHz ARM Cortex-M3 MCU

Shenzhen Mingjiada Electronics Co., Ltd., as a seasoned enterprise in the field of electronic components, has been supplying ST STM32F103CBT6 32-bit microcontrollers based on the ARM Cortex-M3 core for an extended period.

STM32F103CBT6 Product Overview:

STM32F103CBT6 medium-density performance line family incorporates the high-performance Arm® Cortex®-M3 32-bit RISC core operating at a 72 MHz frequency, high-speed embedded memories (Flash memory up to 128 Kbytes and SRAM up to 20 Kbytes), and an extensive range of enhanced I/Os and peripherals connected to two APB buses. STM32F103CBT6 devices offer two 12-bit ADCs, three general purpose 16-bit timers plus one PWM timer, as well as standard and advanced communication interfaces: up to two I2Cs and SPIs, three USARTs, an USB and a CAN.

STM32F103CBT6 medium-density performance line family includes devices in six different package types: from 36 pins to 100 pins. Depending on the device chosen, different sets of peripherals are included, the description below gives an overview of the complete range of peripherals proposed in this family.

STM32F103CBT6 Core Architecture and Performance Parameters:

The STM32F103CBT6 is equipped with an ARM Cortex-M3 processor, a 32-bit RISC core renowned for its high performance and low power consumption. The MCU's key technical specifications include:

Core Architecture: 32-bit single-core ARM Cortex-M3

Operating Frequency: 72MHz, providing excellent real-time processing capability

Program Memory: 128KB Flash memory (128K x 8), supporting multiple erase/write cycles

RAM Capacity: 20KB SRAM (20K x 8), providing ample space for data processing

Operating Voltage: Wide voltage range from 2V to 3.6V, suitable for various power supply environments

Operating temperature: -40°C to 85°C industrial-grade temperature range, ensuring reliability in harsh environments

STM32F103CBT6 specifications:

Core: ARM Cortex-M3

Program memory capacity: 128 kB

Data bus width: 32-bit

ADC resolution: 12-bit

Maximum clock frequency: 72 MHz

Number of I/O pins: 37 I/O pins

Data RAM capacity: 20 kB

Supply voltage - minimum: 2 V

Supply voltage - maximum: 3.6 V

Minimum operating temperature: -40°C

Maximum operating temperature: +85°C

Interface types: CAN, I2C, SPI, USART, USB

ADC channel count: 10 channels

Timer/counter count: 4 timers

Processor series: ARM Cortex-M

STM32F103CBT6 features a rich set of peripheral interfaces:

The STM32F103CBT6 integrates various communication interfaces and peripheral modules, significantly simplifying system design and reducing BOM costs:

Communication interfaces: Supports CANbus, I2C, IrDA, LIN, SPI, UART/USART, and USB full-speed interfaces to meet various connectivity requirements

Analogue functionality: Built-in 10-channel 12-bit ADC for analogue signal acquisition

Timer resources: Includes 7 timers supporting PWM output and motor control

GPIO count: Provides up to 37 general-purpose I/O pins to enhance system expandability

Protection features: Integrated power-on reset (POR), power-down detection (PVD), and watchdog timer (WDT), enhancing system reliability

Package and physical characteristics:

The STM32F103CBT6 uses a 48-pin LQFP package, a surface-mount package with the following features:

Pin pitch: 0.5mm, suitable for high-density PCB layout

Package size: 7x7mm, saving PCB space

Environmental certification: Compliant with RoHS standards, manufactured using lead-free processes

This compact package design makes the STM32F103CBT6 ideal for space-constrained applications while maintaining excellent thermal performance and soldering reliability.

STM32F103CBT6 application areas:

Industrial automation and control:

PLC controllers

Motor drive systems

Industrial sensor interfaces

Human-machine interface (HMI) devices

Consumer electronics:

Home appliance control boards

Smart home devices

Portable electronic devices

Gaming peripherals

Automotive Electronics:

Body Control Modules (BCM)

In-vehicle infotainment system auxiliary control

Automotive diagnostic equipment

IoT End Devices:

Wireless sensor nodes

Smart metering devices

Remote monitoring terminals

Medical Devices:

Portable medical monitoring instruments

Rehabilitation equipment controllers

Medical diagnostic auxiliary equipment