Beijing, China – November 4, 2025 — GigaDevice, a leading semiconductor company specializing in Flash memory, 32-bit microcontrollers (MCUs), sensors, and analog products, today announced the official launch of the GD32F503/505 high-performance series of 32-bit general-purpose microcontrollers. This release significantly strengthens its product portfolio based on the Arm® Cortex®-M33 core, adding a new powerhouse to the GD32 MCU high-performance lineup. Built on the Arm® v8-M architecture, the series operates at a frequency of 280 MHz and features flexible memory configurations, high integration, and built-in security functions, providing a solid foundation for high-performance computing.
It is well-suited for a wide range of applications, including digital power supplies, industrial automation, motor control, robotic vacuum cleaners, BMS, humanoid robots, and more. The GD32F503/505 series MCUs are now available as samples and development boards are available on request, with mass production due to begin in December.
Higher Frequency for Superior Performance
The GD32F503/505 series chips utilize the Arm® Cortex®-M33 high-performance core. The GD32F505 operates at a frequency of 280 MHz, while the GD32F503 runs at 252 MHz. Leveraging the efficient Arm®v8-M architecture, these chips feature an advanced DSP hardware accelerator and a single-precision floating-point unit (FPU). The GD32F503/505 series delivers exceptional performance, achieving up to 4.10 CoreMark/MHz and 1.51 DMIPS/MHz.
The series is equipped with up to 1024 KB of Flash and 192 KB of SRAM. Users can flexibly allocate Code-Flash, Data-Flash, and SRAM location through scatter loading based on their specific application scenarios. This feature allows users to tailor(memory) resources according to their needs, enabling optimal configuration for complex industrial control and consumer electronics applications which significantly enhances design flexibility and cost-effectiveness.
Powerful Peripherals and Industrial-Grade Reliability
The GD32F503/505 series integrates a rich set of peripheral resources, including three ADCs with a sampling rate of up to 3 Msps (supporting up to 25 channels), one fast comparator, and one DAC, enabling features such as rapid protection. It also supports up to three SPIs, two I2Ss, two I2Cs, three USARTs, two UARTs, two CAN-FDs, and one USBFS interface, facilitating seamless connectivity with various external devices.
Additionally, the GD32F503/505 series features a robust timing system, comprising one 32-bit general-purpose timer, five 16-bit general-purpose timers, two 16-bit basic timers, and two 16-bit PWM advanced timers. This upgraded system provides precise and flexible waveform control along with powerful protection mechanisms, adapted for applications such as digital power supplies and motor control.
The operating voltage range of the GD32F503/505 series is 2.6V to 3.6V, and it supports an industrial-grade temperature range of -40°C to +105°C. With three meticulously designed power-saving modes, it offers developers flexible solutions for maximizing power efficiency. This makes the series suitable not only for applications demanding extreme performance but also for power-sensitive portable devices and battery-powered applications.
The GD32F503/505 series devices incorporate enhanced electromagnetic compatibility and reliability design, delivering outstanding overall performance and long service life. In typical industrial scenarios, these chips can operate continuously for over 25 years. They also feature high-level ESD protection, supporting contact discharge up to 8 kV and air discharge up to 15 kV. Their HBM/CDM immunity remains stable at 4000V/1000V even after three Zap tests, demonstrating reliability margins that exceed conventional standards for industries such as industrial and home appliances. These characteristics collectively ensure long-term stable operation of systems in harsh electrical environments, ready to face rigorous challenges.
Active Defense for Device Security
The GD32F503/505 series MCU implements a comprehensive chip-level security architecture, providing a Secure Boot and Secure Firmware Update (SBSFU) platform. Combined with hardware security features such as user secure storage areas, they enable multi-level protection of code and data, supporting firmware upgrades, integrity and authenticity verification, and anti-rollback checks. These devices feature a built-in hardware security engine integrating SHA-256 hash algorithms, AES-128/256 encryption algorithms, and a True Random Number Generator (TRNG). Additionally, each device has a unique independent UID, providing a unique guarantee for device authentication and lifecycle management.
The GD32F503/505 series chips implement a multi-layered hardware security mechanism centered around multi-channel watchdogs, power and clock monitoring, and hardware CRC, ensuring comprehensive system reliability and data integrity. Furthermore, the GD32F5xx series MCUs’ accompanying Software Test Library (STL) has obtained German IEC 61508 SC3 (SIL 2/SIL 3) functional safety certification. To help customers quickly meet certification requirements, the series also provides a complete Safety Package, including key documents such as a safety manual, FMEDA report, and safety self-test library, establishing a high-reliability foundation for industrial applications.
Comprehensive Ecosystem Support
The GD32F503/505 series offers a wide range of product models, covering multiple package types such as LQFP100/64/48, QFN64/48/32, and BGA64, meeting the requirements of various compact device designs. All relevant documentation, including datasheets, software libraries, ecosystem guides, and supporting tools, are now available on the official website, providing developers with complete technical references and convenient access to resources. Development boards are also launched simultaneously, with sample applications now open. The series will be available through authorized distributors.
GD32 features a full-chain development ecosystem, providing seamless support for project implementation. GigaDevice offers the free GD32 Embedded Builder IDE, GD-LINK debugging and download tools, and the versatile GD32 All-In-One Programmer. Additionally, leading industry tool providers such as Arm® KEIL, IAR, and SEGGER offer comprehensive support for this series, including compilation development and trace debugging.
