GD32F303CCT6 GigaDevice ARM Cortex-M4 MCU 120MHz 256KB Flash 48KB SRAM LQFP-48 (7×7)

GD32F303CCT6 Product Overview

The GD32F303CCT6 is a mainstream 32‑bit general‑purpose microcontroller from GigaDevice, based on the ARM Cortex‑M4 core, in an LQFP-48 package (7×7mm). Running at up to 120MHz, the GD32F303CCT6 features 256KB Flash and 48KB SRAM, with an integrated FPU and DSP instruction set. As a key model in the GD32F303 series, the GD32F303CCT6 offers exceptional cost‑performance and rich peripheral resources, making it suitable for industrial control, motor drives, consumer electronics, automotive electronics, and IoT applications. This GD32F303CCT6 chip is a mainstream domestic alternative to the STM32F103 series.

GD32F303CCT6 Core Features

The GD32F303CCT6 is built on the ARM Cortex‑M4 core with FPU and DSP instruction set support. The GD32F303CCT6 runs at up to 120MHz, delivering excellent performance for applications requiring complex calculations and real‑time processing. The GD32F303CCT6 offers 256KB Flash and 48KB SRAM.

The GD32F303CCT6 provides 37 I/O ports. Analog peripherals of the GD32F303CCT6 include three 12‑bit ADCs (supporting up to 10 channels, 2.6Msps sampling rate) and two 12‑bit DACs, suitable for high‑precision analog signal processing.

Communication interfaces of the GD32F303CCT6 include three SPIs, two I2Cs, five USARTs, two CANs, and one USB 2.0 FS interface. Timer resources of the GD32F303CCT6 include six 16‑bit general‑purpose timers and two advanced timers, supporting three‑phase PWM complementary output and dead‑time management for BLDC motor control and servo drive applications.

The GD32F303CCT6 operates from 2.6V to 3.6V, over a temperature range of -40℃ to +85℃. Package of the GD32F303CCT6 is LQFP-48 (7×7mm).

GD32F303CCT6 Applications

Industrial Control & Automation: The GD32F303CCT6 is used in servo motor control, PLCs, inverters, smart instruments

Motor Control & Drives: The GD32F303CCT6 is ideal for BLDC motor control, servo drives, power tools

Consumer Electronics & IoT: The GD32F303CCT6 supports mechanical keyboards (QMK firmware, full‑key rollover, RGB customization), smart home (standby power as low as 10.5μA)

New Energy & Automotive Electronics: The GD32F303CCT6 enables Battery Management Systems (BMS, multi‑channel ADC monitoring, <1% estimation error), automotive CAN bus communication

Industrial IoT & Smart Instruments: The GD32F303CCT6 is used in distributed monitoring systems for photovoltaic energy storage and power monitoring

Education & Maker Projects: The GD32F303CCT6 is popular for portable digital oscilloscopes, OV7670 camera drivers

GD32F303CCT6 Key Advantages

As a representative of domestic high‑performance MCUs, the GD32F303CCT6 offers exceptional cost‑performance and a comprehensive ecosystem, making it a benchmark solution for replacing imported chips. The GD32F303CCT6 ARM Cortex‑M4 core with FPU and DSP instruction set runs at up to 120MHz, delivering 30% higher performance compared to competitors at the same level. With 256KB Flash and 48KB SRAM, the GD32F303CCT6 first 256KB of Flash achieves zero‑wait‑state access. The GD32F303CCT6 three 12‑bit ADCs (2.6Msps) and two 12‑bit DACs provide high‑precision analog signal processing. The GD32F303CCT6 rich communication interfaces include three SPIs, two I2Cs, five USARTs, two CANs, and USB 2.0 FS. The GD32F303CCT6 is pin‑to‑pin compatible with the STM32F103 series, allowing direct replacement of existing hardware with only minor software adjustments. The GD32F303CCT6 supports mainstream IDEs including Keil, IAR, and GCC. As an original GigaDevice product, the GD32F303CCT6 offers stable supply and a mature development ecosystem.

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FAQ

1. What is GD32F303CCT6?

The GD32F303CCT6 is a 32-bit high-performance microcontroller (MCU) from GigaDevice, based on the ARM® Cortex®-M4 core with integrated FPU and DSP instructions. The GD32F303CCT6 belongs to GigaDevice's mainstream GD32 series, operating at up to 120MHz with 150 DMIPS processing capability.

2. What are the key specifications of GD32F303CCT6?

• Core: The GD32F303CCT6 uses ARM Cortex-M4 with FPU and DSP

• Frequency: The GD32F303CCT6 runs up to 120MHz

• Memory: The GD32F303CCT6 has 256KB Flash + 48KB SRAM

• Operating Voltage: The GD32F303CCT6 operates at 2.6V ~ 3.6V

• I/Os: The GD32F303CCT6 provides 37 GPIO pins

• ADC: The GD32F303CCT6 has 2×12-bit, 10 channels

• DAC: The GD32F303CCT6 features 2×12-bit

• Timers: The GD32F303CCT6 includes 6×16-bit timers

• Temperature: The GD32F303CCT6 operates at -40°C ~ +85°C (industrial grade)

3. What package does GD32F303CCT6 use?

The GD32F303CCT6 uses an LQFP-48 package, measuring 7mm × 7mm. The GD32F303CCT6 pin pitch is 0.50mm with a height of 1.60mm. The GD32F303CCT6 is surface-mount type (SMD), MSL 3 rated, and RoHS compliant.

4. What applications is GD32F303CCT6 suitable for?

The GD32F303CCT6 is widely used in industrial control, motor drives (FOC control), consumer electronics, smart home, IoT terminals, automotive electronics, and portable digital oscilloscopes. The GD32F303CCT6 120MHz frequency and FPU make it particularly suitable for applications requiring complex algorithm processing and real-time signal processing.

5. What development tools support GD32F303CCT6?

The GD32F303CCT6 supports Keil MDK (V5 or later recommended, with GD32F30x AddOn pack installed), IAR Embedded Workbench, and GCC toolchains. GigaDevice provides the GD32F303C-START evaluation board for the GD32F303CCT6, supporting common debuggers including J-Link, ST-Link, and DAPLink.

6. What is the operating temperature range of GD32F303CCT6?

The operating temperature range of the GD32F303CCT6 is -40°C to +85°C (industrial grade). Storage temperature of the GD32F303CCT6 ranges from -55°C to +150°C.

7. What are the key features of GD32F303CCT6?

• High performance: The GD32F303CCT6 Cortex-M4 core @120MHz with FPU and DSP instructions

• Rich peripherals: The GD32F303CCT6 includes 2×ADC, 2×DAC, 6×timers (including advanced PWM timers), 3×USART, 3×SPI, 2×I2C, 2×I2S, 1×CAN

• Low power: The GD32F303CCT6 supports Sleep, Deep Sleep, and Standby power-saving modes

• Cost-effective: The GD32F303CCT6 is Pin-to-Pin compatible with STM32F103 series with significant cost advantages

8. What peripheral interfaces does GD32F303CCT6 support?

The GD32F303CCT6 supports 3×USART, 3×SPI, 2×I2C, 2×I2S, 1×CAN 2.0B communication interfaces; 2×12-bit ADC (10 channels) and 2×12-bit DAC; 6×16-bit timers (including advanced PWM timers with complementary outputs and dead-time management for BLDC motor control); USB FS device interface; and 37 GPIOs.

9. What are the alternative models for GD32F303CCT6?

• Same series: The GD32F303CCT6 is part of a series that includes GD32F303RCT6 (512KB Flash, LQFP64), GD32F303VET6 (512KB Flash/96KB SRAM, LQFP100)

• PIN-to-PIN compatible: The GD32F303CCT6 is compatible with STM32F303CCT6 (same package and core from ST), STM32F103C8T6 (direct hardware replacement)

• Other variants: The GD32F303CCT6 has a variant GD32F303CBT6 (128KB Flash)

10. What are the design considerations when using GD32F303CCT6?

• Software migration: When porting to GD32F303CCT6 from STM32, pay attention to clock configuration and delay function adjustments. The GD32F303CCT6 is highly software-compatible with STM32F103, requiring only minor modifications

• CAN configuration: The GD32F303CCT6 requires attention to GPIO remap configuration when using CAN functionality

• ADC accuracy: Be aware of ADC zero-offset error and data jitter issues in actual development with the GD32F303CCT6

• Debug interface: The GD32F303CCT6 supports SWD debugging (PA13/SWCLK, PA14/SWDIO)

• Power decoupling: At 120MHz high-speed operation of the GD32F303CCT6, ensure power integrity with appropriate decoupling capacitors near VDD pins