Nuvoton MA35D1 MPU — Realizing Energy Storage Gateways

Application Background

Energy sustainability has long been a global focus. With growing environmental awareness, renewable energy sources such as solar and wind power are drawing increasing attention. However, the inherent characteristics of these new energy sources—such as intermittency, instability, and fluctuating output—pose challenges to grid stability.

To address these fluctuations, Energy Storage Systems have emerged as a key solution for balancing and stabilizing energy supply.
Within the Energy Storage System, both the Battery Management System (BMS) and Energy Management System (EMS) rely on a central gateway for data communication and intelligent control.
The gateway plays a critical role in enabling smart operation and efficient management of energy storage systems.

Nuvoton MA35D1 Series Overview

The NuMicro® MA35D1 series is a heterogeneous multi-core microprocessor featuring:

• Dual 64-bit Arm® Cortex®-A35 cores running up to 800 MHz
• One 180 MHz Arm® Cortex®-M4 core for real-time control

To simplify system design and production, the MA35D1 series offers LQFP and BGA packages, integrating up to 512 MB DDR2/DDR3L memory, effectively reducing PCB layer count, board size, and electromagnetic interference (EMI). The MA35D1 also provides multiple high-performance communication interfaces, including Gigabit Ethernet, SDIO 3.0, High-Speed USB 2.0, and CAN FD.

It supports an LCD controller up to 1920×1080@60fps, with an integrated 2D graphics accelerator, JPEG, and H.264 decoder, delivering enhanced GUI and multimedia performance.

Advantages of MA35D1 for Energy Storage Gateway Applications

Integrated High-Capacity DDR Memory for Simplified Design
Built-in DDR2/DDR3L up to 512 MB enables efficient data processing and streamlined hardware design.

Embedded M4 Core for Real-Time Control
Peripherals such as GPIO, ADC, UART, SPI, I²C, and CAN FD can be flexibly assigned to either the A35 or M4 core, improving responsiveness.

High-Speed Data Exchange via Shared DDR Memory
Data transfer between A35 and M4 cores via shared DDR memory achieves microsecond-level latency.

Comprehensive Communication Interfaces
Equipped with 4×CAN FD, 2×Gigabit Ethernet, and 17×UART ports. CAN FD interfaces are compatible with standard CAN and verified for stability.

Enhanced Security Features
Supports Arm® TrustZone®, Secure Boot, and Trusted Secure Island (TSI) to ensure data integrity and system protection.

Industrial Safety Compliance
Supports IEC-60730 Class B safety standard.