GD32F450xx devices belong to the performance expansion series of the GD32 MCU family. It is a new 32-bit general-purpose microcontroller based on the ARMortex-M4 RISC core, with the best price/performance ratio in terms of enhanced processing capabilities, reduced power consumption and peripherals. The Cortex-4 core integrates a floating-point unit (FPU) to accelerate single-precision floating-point math operations and supports all ARM single-precision instructions and data types. It implements a set of DSP instructions to meet the needs of the digital signal control market for efficient and easy-to-use control and signal processing capabilities. It also provides a Memory Protection Unit (MPU) and powerful tracing to enhance application security and advanced debugging support. GD32F450xx devices integrate an ARM Cortex-M4 32-bit processor core running at 200 MHz with zero wait states for Flash access for maximum efficiency. It provides up to 3072 KB of on-chip Flash memory and 512 KB of SRAM memory. The device provides up to three 12-bit 2.6M SPS ADCs, two 12-bit DACs, up to eight general-purpose 16-bit timers, two 16-bit PWM advanced control timers, two 32-bit general-purpose timers and two 16-bit basic timers, as well as standard and advanced communication interfaces: up to six SPI three I2C, four USART and four UART, two I2S, two CAN, one SDIO, USB device/host/OTG FS and HS, and network MAC. In addition, additional peripherals such as digital camera interface (DCI), EXMC interface supporting SDRAM expansion, TFT-LCD interface (TLI) and image processor (IPA) are included. The device operates from 2.6 to 3.6V and has an operating temperature range of -40 to 85 degrees Celsius. Three energy-saving modes maximize the flexibility of optimizing power consumption, which is particularly important in low-power applications. The above characteristics make GD32F450xx devices suitable for a wide range of interconnected and advanced applications, especially in industrial, consumer and handheld devices, embedded modules, human-machine interfaces, security and alarm systems, graphic displays, car navigation, drones, Internet of Things and other fields.