GD32E503RET6 GigaDevice ARM Cortex-M33 32-bit Microcontroller MCU LQFP-64(10x10)

GD32E503RET6 Product Overview

The GD32E503RET6 is a high-performance 32-bit general-purpose microcontroller (MCU) from GigaDevice, built on the ARM Cortex-M33 core and belonging to the GD32E503 mainstream high-performance product series. Housed in a LQFP-64 (10x10mm) mainstream package with 51 I/O pins， the GD32E503RET6 delivers powerful processing capabilities with a 180MHz maximum frequency and zero-wait-state Flash access. As GigaDevice's high-performance product based on the latest Armv8-M architecture, the GD32E503RET6 integrates a complete set of DSP instructions, a single-precision Floating-Point Unit (FPU)， and a brand-new Hardware Trigonometric Accelerator (TMU) , delivering up to 244 DMIPS with a CoreMark® score of 547. With 512KB on-chip Flash and 128KB SRAM， plus EXMC external memory controller support， the GD32E503RET6 is manufactured on a 40nm advanced process. Code execution efficiency of the GD32E503RET6 at the same frequency is 10%-20% higher than comparable Cortex-M4 products and over 40% higher than Cortex-M23 products. The GD32E503RET6 is widely applicable in industrial control, motor drives, IoT, automotive electronics, and high-end consumer electronics.

GD32E503RET6 Key Features

High-Performance ARM Cortex-M33 Core: The GD32E503RET6 features an ARM Cortex-M33 processor based on the latest Armv8-M architecture with TrustZone security technology. Operating at up to 180MHz, the GD32E503RET6 has a built-in single-cycle multiplier, hardware divider, complete DSP instruction set, single-precision FPU, and a new Hardware Trigonometric Accelerator (TMU) supporting vector, sine/cosine, exponential, square root, and logarithmic operations to reduce CPU load and improve processing efficiency. The GD32E503RET6 delivers up to 244 DMIPS with a CoreMark® score of 547. Code execution efficiency of the GD32E503RET6 at the same frequency is 10%-20% higher than comparable Cortex-M4 products and over 40% higher than Cortex-M23 products.

Large Memory Capacity: The GD32E503RET6 is equipped with 512KB on-chip Flash and 128KB SRAM. The GD32E503RET6 supports EXMC External Memory Controller for expanding external SRAM, NOR Flash, and more.

Mainstream LQFP Package: The GD32E503RET6 comes in a LQFP-64 (10x10mm) package with 51 I/O pins, ideal for industrial PCB design and volume production.

Wide Voltage & Temperature Range: The GD32E503RET6 supports 1.7V to 3.6V wide operating voltage and -40℃ to +85℃ industrial temperature range.

Rich Analog Peripherals: The GD32E503RET6 integrates three 12-bit ADCs (21 channels total) and two 12-bit DACs.

Comprehensive Timer Resources: The GD32E503RET6 provides nine 16-bit general-purpose timers， two 16-bit advanced vector control timers, one 32-bit general-purpose timer, two 16-bit basic timers, and a High-Resolution Timer (HRTIM) .

Extensive Communication Interfaces: The GD32E503RET6 supports 6 USART/UART, 3 SPI, 3 I2C, 2 I2S, 3 CAN-FD (up to 6Mbps), 1 USB 2.0 FS, and 1 SDIO interface.

Memory Expansion & Advanced Peripherals: The GD32E503RET6 supports SQPI (Serial/Quad Parallel Interface) , 10/100M Ethernet MAC, and EXMC External Memory Controller.

Security Features: The GD32E503RET6 features TrustZone security technology based on Armv8-M architecture.

Multiple Low-Power Modes: The GD32E503RET6 supports various power-saving modes for flexible optimization between wake-up latency and power consumption.

GD32E503RET6 Applications

With its powerful performance, 51 I/O pins, and rich peripheral set, the GD32E503RET6 is widely used in:

Industrial Control: The GD32E503RET6 is suitable for PLCs, industrial automation equipment, variable-frequency drives, and servo drives

Motor Control & Drives: The GD32E503RET6 enables servo drives, inverter air conditioners, BLDC/PMSM motor control

IoT & Edge Computing: The GD32E503RET6 is ideal for IoT gateways, edge computing nodes, industrial data acquisition terminals

Automotive Electronics: The GD32E503RET6 can be deployed in in-vehicle infotainment, body control modules (BCM), CAN-FD gateways

High-End Consumer Electronics: The GD32E503RET6 powers smart home devices, gaming peripherals, multimedia devices

Communication Equipment: The GD32E503RET6 is used in Ethernet communication devices, industrial switches

Medical Devices: The GD32E503RET6 is applied in portable medical instruments, monitoring equipment

GD32E503RET6 Key Advantages

180MHz Cortex-M33 + FPU/DSP/TMU High Performance: The GD32E503RET6 is based on the latest Armv8-M architecture with FPU, complete DSP instructions, and Hardware TMU – delivering 244 DMIPS and CoreMark® score of 547. Code execution efficiency of the GD32E503RET6 is 10%-20% higher than comparable Cortex-M4 products and over 40% higher than Cortex-M23 products.

512KB Flash + 128KB SRAM: The GD32E503RET6 provides ample storage for complex applications with EXMC external memory expansion.

3×ADC + 2×DAC + HRTIM: The GD32E503RET6 integrates three 12-bit ADCs (21 channels), two 12-bit DACs, and a High-Resolution Timer for high-precision analog acquisition and PWM output in motor control and digital power applications.

3×CAN-FD + 6×Serial + USB OTG + Ethernet MAC: The GD32E503RET6 offers three CAN-FD (up to 6Mbps), six USART/UART, USB 2.0 FS, and 10/100M Ethernet MAC for comprehensive industrial and automotive connectivity.

TrustZone Security: The GD32E503RET6 features Armv8-M TrustZone technology for secure data and operations.

Pin-to-Pin Compatible with STM32L5 Series: The GD32E503RET6's LQFP-64 package can replace STM32L552RET6/STM32L562RET6 with low hardware replacement cost.

51 I/O Pins: The GD32E503RET6 offers 51 I/O pins in an LQFP-64 package for moderate-complexity systems.

40nm Advanced Process: The GD32E503RET6 is manufactured on a 40nm advanced process for efficient power control.

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FAQ

1 What is the GD32E503RET6 chip
The GD32E503RET6 is a high performance 32 bit microcontroller from GigaDevice based on the ARM Cortex M33 core, featuring an LQFP 64 package and integrating a hardware encryption engine and floating point unit, focusing on security and computing performance.

2 What are the core frequency Flash and SRAM capacities
The GD32E503RET6 reaches a maximum main frequency of 180MHz, with 512KB of Flash memory and 128KB of SRAM onboard, easily handling complex real time control and multitasking.

3 What is the package type pin count and physical size
The GD32E503RET6 adopts an LQFP 64 package with 64 pins and a standard dimension of 14 by 14 millimeters, which is a mainstream package balancing rich peripherals and PCB soldering convenience.

4 What are the operating voltage and temperature ranges
The GD32E503RET6 operates at 2 point 6V to 3 point 6V, and the temperature range meets the industrial standard of minus 40 degrees Celsius to plus 85 degrees Celsius.

5 Which mainstream chip can this chip replace
The GD32E503RET6 offers high compatibility with the STM32F405RET6 in hardware pins and software layers. With the M33 core and higher frequency, the GD32E503RET6 delivers enhanced processing power and security after migration.

6 What peripheral communication and control interfaces does it support
The GD32E503RET6 integrates multiple USART serial ports, I2C interfaces, SPI interfaces, 2 CAN 2.0B buses, supports USB 2.0 OTG, 12 bit ADC and DAC, TFT LCD display interfaces, and Digital Camera Interface DCI.

7 What IDEs and programming methods are supported
The GD32E503RET6 fully supports mainstream embedded IDEs such as Keil MDK, IAR EWARM, and GCC. The official standard peripheral libraries and HAL libraries are comprehensive for the GD32E503RET6.

8 What application scenarios is this chip suitable for
 With its powerful computing performance, rich peripherals, and hardware level encryption, the GD32E503RET6 is widely used in industrial automation control, motor drives, IoT security gateways, smart instruments, and high end consumer electronics.

9 What hardware security encryption features are integrated
The GD32E503RET6 integrates hardware acceleration engines for AES, SHA, SM3, and SM4 algorithms, efficiently implementing data encryption and decryption and secure communication, suitable for devices with strict information security requirements.

10 What debugging and firmware download interfaces are supported
The GD32E503RET6 supports both the SWD serial wire debug interface and the JTAG interface, allowing for online simulation, breakpoint debugging, and firmware programming through mainstream emulators during development.