STM32F303 Microcontroller ICs – ARM Cortex-M4 MCU Variants

STM32F303 Series Microcontroller ICs

Upgrade your embedded projects with the STM32F303 series microcontroller ICs — a powerful family of ARM Cortex-M4 based 32-bit MCUs designed for general-purpose applications. Whether you're prototyping, developing motor control systems, or building precision analog applications, the STM32F303 family delivers high performance with an integrated FPU, rich peripherals, and flexible I/O configurations.

Available in multiple variants to suit your exact design requirements:

• STM32F303CBT6 – LQFP-48, 128 KB Flash, 40 KB RAM
• STM32F303CCT6 – LQFP-48, 256 KB Flash, 40 KB RAM
• STM32F303K6T6 – LQFP-32, 32 KB Flash, 12 KB RAM
• STM32F303K8T6 – LQFP-32, 64 KB Flash, 12 KB RAM
• STM32F303R8T6 – LQFP-64, 64 KB Flash, 16 KB RAM
• STM32F303RBT6 – LQFP-64, 128 KB Flash, 32 KB RAM
• STM32F303RCT6 – LQFP-64, 256 KB Flash, 40 KB RAM
• STM32F303RDT6 – LQFP-64, 384 KB Flash, 64 KB RAM
• STM32F303RET6 – LQFP-64, 512 KB Flash, 64 KB RAM

Key Features

• ARM® 32-bit Cortex®-M4 CPU with FPU, up to 72 MHz clock speed
• Embedded Flash and SRAM memory — variant-dependent capacities
• High-resolution timers for precise PWM and motor control
• Up to 4× op-amps and 4× 12-bit ADCs for advanced analog signal processing
• Multiple communication interfaces: SPI, I2C, USART, CAN, USB
• Wide operating voltage: 2.0 V to 3.6 V
• Available in compact LQFP-32, LQFP-48, and LQFP-64 packages
• RoHS-compliant; no high-concern chemicals
• General-purpose use for industrial, consumer, and hobby electronics

Ideal Applications

• Motor and power control systems
• Industrial automation and sensing
• Robotics and embedded computing
• DIY electronics and maker projects
• IoT edge devices and sensor hubs

Made in Mainland China.

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Frequently Asked Questions

Q: What is the STM32F303 series and what makes it suitable for general-purpose embedded applications?

A: The STM32F303 series are 32-bit ARM Cortex-M4 microcontrollers from STMicroelectronics featuring a floating-point unit (FPU), high-resolution timers, multiple ADCs, and rich communication peripherals. They are well-suited for a wide range of general-purpose embedded applications including motor control, industrial sensing, and consumer electronics.

Q: How do I choose the right STM32F303 variant for my project?

A: Choose based on your required Flash memory size, RAM, I/O pin count, and package format. For compact designs with fewer pins, the LQFP-32 variants (K6T6, K8T6) are ideal. For more I/O and larger memory, the LQFP-64 variants (R8T6 through RET6) offer expanded capabilities. The LQFP-48 variants (CBT6, CCT6) provide a balanced middle-ground option.

Q: What programming tools are compatible with STM32F303 microcontrollers?

A: STM32F303 MCUs are compatible with ST-LINK/V2 programmers and popular IDEs including STM32CubeIDE, Keil MDK, and IAR Embedded Workbench. They also support open-source toolchains such as GCC ARM and PlatformIO, making them accessible for both professional engineers and hobbyists.

Q: Are these ICs RoHS-compliant?

A: Yes, the STM32F303 series ICs in this listing contain no high-concern chemicals and are RoHS-compliant, making them suitable for use in environmentally conscious product designs.