STM32F103C8T6 STMicroelectronics

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The STM32F103C8T6 is a microcontroller unit (MCU) from STMicroelectronics, which is part of their mainstream performance line. It is built around an ARM Cortex-M3 core and operates at a frequency of up to 72 MHz. This MCU is known for its versatility and is widely used in various applications due to its rich set of peripherals and features.



The STM32F103C8T6 microcontroller is part of the STM32 F1 series and is known for its high-performance ARM Cortex-M3 processor. It offers a variety of features that make it suitable for a wide range of applications, from simple to complex ones. Some of its key features include:

  1. Core: It is built around an ARM 32-bit Cortex-M3 CPU, which can run up to 72 MHz, providing 90 DMIPS with 1.25 DMIPS/MHz. This core is capable of single-cycle multiplication and hardware division, enhancing its computational efficiency.
  2. Memory: The device comes with a range of 32-to-128 Kbytes of Flash memory and 6-to-20 Kbytes of SRAM, offering ample space for both program storage and runtime data handling.
  3. Power Efficiency: It includes various low power modes such as Sleep, Stop, and Standby, alongside a VBAT supply for RTC and backup registers, optimizing power consumption for battery-powered applications.
  4. Analog Features: It has 2 x 12-bit, 1 µs A/D converters supporting up to 16 channels, enabling the microcontroller to interface with a variety of sensors and perform analog-to-digital conversions efficiently.
  5. Connectivity and Peripherals: The STM32F103C8T6 supports a wide array of peripherals and interfaces including timers, ADC, SPIs, I2Cs, and USARTs, facilitated by a 7-channel DMA controller for efficient data transfers without CPU intervention.
  6. Clock, Reset, and Supply Management: It provides a robust set of features for clock management with options like a 4-to-16 MHz quartz oscillator, an internal 8 MHz factory-trimmed RC, a PLL for CPU clock, and more. This ensures flexible clocking options and reliable operation across different application requirements.
  7. Package and Compliance: It is offered in a LQFP48 package, ensuring compactness for designs where space is a premium. Additionally, it complies with industrial-grade specifications and RoHS standards, making it suitable for a wide range of industrial applications.
  8. Cross-Family Compatibility: It offers pin-to-pin, peripheral, and software compatibility across the STM32 family, simplifying upgrades and product line expansions.

These features underline the STM32F103C8T6’s versatility, making it a preferred choice for applications in industrial control, motor drives, power management, and more​​. For a deeper dive into its specifications and benefits, you might want to explore detailed datasheets and technical documents provided by STMicroelectronics.


The STM32F103C8T6 microcontroller, built around an ARM Cortex-M3 core, is well-regarded for its excellent real-time capabilities, outstanding power efficiency, and a wide array of innovative peripherals. This combination of features makes the STM32F103C8T6 a highly versatile and efficient choice for a broad range of applications.

Typical applications leveraging the capabilities of the STM32F103C8T6 include complex motor control systems, advanced communication interfaces, and various industrial applications. Its robust design, featuring a range of 2.0 to 3.6 V for application supply and I/Os, a wide operating temperature range from -40 °C to 85 °C, and a comprehensive set of power-saving modes, ensures reliable performance in demanding environments.

The microcontroller’s rich set of peripherals, including multiple timers, ADCs, SPI, I2C, and USART interfaces, along with USB and CAN communication capabilities, provide maximum integration for complex applications. This integration, coupled with the device’s cross-family compatibility, makes the STM32F103C8T6 an excellent choice for developers looking to create scalable and future-proof designs.



Product Attribute Attribute Value
Manufacturer: STMicroelectronics
Product Category: ARM Microcontrollers – MCU
Series: STM32F103C8
Mounting Style: SMD/SMT
Package / Case: LQFP-48
Core: ARM Cortex M3
Program Memory Size: 64 kB
Data Bus Width: 32 bit
ADC Resolution: 12 bit
Maximum Clock Frequency: 72 MHz
Number of I/Os: 37 I/O
Data RAM Size: 20 kB
Supply Voltage – Min: 2 V
Supply Voltage – Max: 3.6 V
Minimum Operating Temperature: – 40 C
Maximum Operating Temperature: + 85 C
Packaging: Tray
Brand: STMicroelectronics
Data RAM Type: SRAM
Height: 1.4 mm
Interface Type: CAN, I2C, SPI, USART, USB
Length: 7 mm
Moisture Sensitive: Yes
Number of ADC Channels: 10 Channel
Number of Timers/Counters: 3 Timer
Processor Series: ARM Cortex M
Product: MCUs
Product Type: ARM Microcontrollers – MCU
Program Memory Type: Flash
Factory Pack Quantity: 1500
Subcategory: Microcontrollers – MCU
Tradename: STM32
Width: 7 mm
Unit Weight: 180 mg



STM32F103C8T6 STMicroelectronics Datasheet


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