Description：

The GigaDevice GD32G553MET7 is a high-performance member of the GD32G5 series, featuring a 216 MHz Arm® Cortex®-M33 core. This model delivers the series' signature high-precision control capabilities—such as the advanced High-Resolution Timer (HRTIM)—in an ultra-compact 81-pin Wafer-Level Chip-Scale Package (WLCSP). It is ideally suited for applications demanding both powerful processing for complex algorithms and a minimal PCB footprint, making it an excellent choice for next-generation compact motor drives, digital power modules, and space-constrained industrial devices.

Main Features：

1. Core & Performance

High-Performance Core: 216 MHz Arm® Cortex®-M33 core with DSP instruction set support and an integrated Single-Precision Floating-Point Unit (FPU).

Hardware Accelerators: Built-in Trigonometric Mathematics Unit (TMU), Filter Algorithm Accelerator (FAC), and Complex Mathematics Unit (CMU), significantly enhancing the computational efficiency for digital signal processing and control loops.

2. Advanced Control & Peripherals

High-Resolution Timer (HRTIM): Provides PWM output with a resolution as high as 145 picoseconds (ps), which is core to achieving efficient digital power supplies (e.g., LLC, totem-pole PFC) and precision motor control (e.g., FOC algorithm).

High-Speed Analog Front-End: Integrates up to 4 channels of 12-bit high-speed ADC (max. sampling rate of 5.3 MSPS) and 2 channels of 12-bit high-speed DAC (max. update rate of 15 MSPS), along with multiple high-speed comparators (CMP), meeting real-time signal acquisition and processing needs.

Rich Connectivity: Provides communication interfaces including CAN-FD, multiple SPI/I2C/USART, and USB 2.0 FS.

Enhanced Security: Equipped with hardware AES-128/256 encryption engine, Hash (HASH) processor, and True Random Number Generator (TRNG), supporting secure boot and secure communication.

3. Memory, Package & Reliability

Memory Configuration: According to model naming convention, the "E" suffix typically corresponds to 512KB Flash and 128KB SRAM (including 32KB Tightly Coupled Memory).

Ultra-Compact Package: The "ME" combination in the model number indicates it uses an 81-pin WLCSP package, with a typical size of only 4.118 x 3.838 mm, making it ideal for space-constrained designs.

Industrial-Grade Reliability: The suffix "T7" indicates an operating temperature range of -40°C to +105°C, meeting stringent industrial environment requirements.

System-Level Safety: Designed to comply with the IEC 61508 SIL2 system functional safety standard, with functional safety documentation packages available.

Typical Applications：

High-Power-Density Digital Power Supplies: AI server power supplies, communication power modules, photovoltaic micro-inverters (PV Micro-inverter).

Compact High-Performance Motor Drives: Robotic joint servo motors, precision Brushless DC (BLDC) motor drivers, compact servo drives in industrial automation.

High-End Industrial Control: Industrial IoT (IIoT) nodes requiring powerful computing and minimal size, advanced sensors, motion control cards.

Other Space-Constrained Applications: Drone Electronic Speed Controllers (ESC), portable medical devices, high-end consumer electronics, etc.