The GD32F103 is a mainstream 32-bit MCU based on the Arm Cortex-M3 core running up to 108 MHz, pin-compatible with STM32F103 for easy migration. Rich peripherals (USART/SPI/I²C/USB/CAN/ADC) make it ideal for industrial control, motor drive, and consumer electronics.
| Core | Arm Cortex-M3 |
| Max Frequency | 108 MHz |
| Flash | 16KB ~ 1MB |
| SRAM | up to 96KB |
| Interfaces | USART, SPI, I²C, USB, CAN |
| ADC | 12-bit |
| Supply Voltage | 2.6V ~ 3.6V |
| Package | LQFP48/64/100, QFN |
The GD32E230 uses the Arm Cortex-M23 core at up to 72 MHz, targeting low cost and low power — ideal for appliance control, compact sensors, and cost-sensitive consumer products. Available in TSSOP/QFN/LQFP compact packages.
The GD25Q64 is a 64 Mbit (8 MB) serial SPI NOR Flash supporting Standard / Dual / Quad SPI at up to 120 MHz — widely used for code storage, boot loading, and data logging. Available in SOP8 / USON8 compact packages.
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