With the accelerated reshaping of the global industrial chain and the profound evolution of industrial intelligence demands, "independent control and complete domestic production" has become the core strategic direction for the development of my country's embedded industrial control and Internet of Things (IoT) fields. At the same time, applications such as IoT gateways, human-machine interfaces, and intelligent control terminals place higher demands on processor computing power, multimedia capabilities, and connectivity. Against this backdrop, EBBTE's ECK41-E1N2-N and ECK41-E1-N series core boards and the matching ECB41-PGE1N2-N single-board computer are industrial-grade embedded core board solutions based on the Rockchip RK3506G2 completely domestically produced processor. These solutions provide developers with an ideal choice that combines high performance, high reliability, high cost-effectiveness, and a complete domestic supply chain guarantee.

I. Product Overview: Small Yet Powerful, Fully Domestically Produced Industrial Brain

The ECK41-E1N2-N and ECK41-E1-N series embedded core boards and the ECB41-PGE1N2-N fully domestically produced single-board computer are meticulously designed, fully domestically produced industrial control core modules based on the Rockchip RK3506G2 tri-core Cortex-A7 processor. The biggest highlight of this series is the realization of "full domestic production" from the processor, memory, and storage to all key components, strictly adhering to industrial-grade standards in design and production.

The product adopts an innovative 96-pin stamp hole + 44-pin LGA composite interface package. Commonly used I/O resources are placed in the stamp hole, while special function pins are brought out through the LGA. While maintaining an ultra-small size (only 29mm × 25mm × 3.1mm), it provides extremely flexible expansion capabilities and soldering reliability. Its compact size and dual-interface design meet the needs of high-performance applications while simplifying baseboard design and reducing production costs.

To facilitate rapid user evaluation and development, EBITE simultaneously launched the ECB41-PGE1N2-N, a fully domestically produced industrial-grade embedded single-board computer perfectly compatible with this core board. It adopts a Raspberry Pi-compatible size design (85mm × 56mm), transforming the core board's rich interfaces into practical physical interfaces for display, network, USB, and audio. It not only serves as a functional verification platform, but its industrial-grade design also allows for direct mass production, significantly shortening the product launch cycle.

II. Processor Performance Characteristics: Triple-core A7, Designed for Intelligent Interaction

The core driving force of the ECK41-E series comes from the Rockchip RK3506G2 processor, a high-performance application processor optimized for multimedia interactive applications such as intelligent voice, audio processing, and image display.

Powerful Computing Core: Integrating three ARM Cortex-A7 cores with a maximum clock speed of 1.2GHz, it provides ample general-purpose computing power, sufficient to smoothly run Linux, lightweight GUI frameworks, and complex application logic. Meanwhile, the additionally integrated ARM Cortex-M0 coprocessor can handle real-time tasks, enabling a reasonable allocation of high- and low-performance tasks.

Integrated Memory, Simplified Design: 128MB of DDR3L memory is directly packaged inside the processor. This innovative design not only significantly reduces the overall size and power consumption of the core board but also reduces peripheral circuitry, improving overall system reliability.

Rich Multimedia Engine: Built-in 2D graphics acceleration engine and advanced display output engine efficiently process graphical interfaces, reducing CPU load. A hardware architecture optimized for audio supports multiple high-definition audio inputs, outputs, and processing, making it ideal for intelligent voice products.

Comprehensive Peripheral Interfaces: Natively supports dual 100Mbps Ethernet (RMII), multiple USB 2.0 OTG ports, CAN bus, and multiple UART/SPI/I2C industry-standard interfaces, providing powerful connectivity for IoT gateways, industrial controllers, and other applications.

III. Product Features and Model Selection

1. Series Model Analysis

The main difference between the ECK41-E1N2-N and ECK41-E1-N embedded core boards lies in their onboard storage configuration, designed to meet the different application requirements for boot speed and storage capacity:

2. Core Functional Highlights

High-Definition Display Output: Supports RGB parallel interface, BT.656/1120 and 2-lane MIPI-DSI interface, with a maximum output resolution of 1280×1280@60fps, capable of driving various displays.

Professional Audio Processing: Provides 4-channel SAI (supporting I2S/PCM/TDM), SPDIF input and output, supports up to 8-channel PDM microphone arrays, 24-bit ADC microphone input, and digital DAC output, meeting complex audio front-end processing needs.

Industrial-Grade Connectivity and Expansion: Features 2-channel CAN 2.0B controllers, 6-channel UART, 3-channel SPI, 3-channel I2C, 12-channel PWM, and up to 80-channel GPIO, easily connecting to various sensors, actuators, and industrial bus devices.

Power Supply and Reliability: Single-channel +5V@1A power supply; the core board internally generates 1.8V and 3.3V power supplies, and can provide 500mA/100mA power supply capabilities externally. Employing a 6-layer PCB immersion gold process**, it boasts a wide operating temperature range (-25℃ to 85℃), ensuring stable operation in harsh industrial environments.

A comprehensive software ecosystem: It runs on a system based on the Linux 6.1.99 kernel, providing complete U-Boot, kernel, and driver source code. It supports Buildroot and Yocto file systems and offers easy-to-use burning tools such as RKDevTool, providing a mature development environment.

IV. Working Principle and Development Path

The ECK41-E series operates on a clear principle: the core board acts as the "brain," housing the processor, memory, power management, and other core units; the user-designed baseboard acts as the "body and limbs," connecting to the core board via a stamp hole/LGA interface and configuring peripheral circuits (such as Ethernet PHY, display, audio codec, etc.) according to application requirements.

For developers, this solution offers two efficient pathways:

**Custom Baseboard Design:** Utilize the core board pin definitions, hardware design guidelines, and packaging files provided by EBITE to develop a custom baseboard, achieving product differentiation.

**ECB41-PGE1N2-N Single-Board Computer:** Directly use this near-product-grade single-board computer. It integrates dual Gigabit Ethernet ports (RJ45), a MIPI-DSI display interface, USB Host/OTG, a TF card slot, audio interfaces, and extended GPIO headers (compatible with some Raspberry Pi pins), and its baseboard design files are open-source. Developers can quickly develop software and prototype based on this, and even directly integrate it as a core module into their own terminal devices, significantly reducing the hardware development threshold and risk.

V. Application Scenarios of Fully Domestic Embedded Solutions

With their fully domestically produced features, high performance, strong multimedia capabilities, and rich interfaces, the ECK41-E1N2-N and ECK41-E1-N series embedded core boards have broad application prospects in the following fields:

Industrial IoT Gateways: Dual network ports, multiple serial ports, and CAN bus make them ideal as industrial edge gateways for protocol conversion and data aggregation.

Intelligent Human-Machine Interfaces: Powerful display and audio processing capabilities make them applicable to industrial HMIs, self-service terminals, integrated advertising machines, smart home control screens, etc.

Audio Processing Equipment: Serving intelligent voice terminals, conferencing systems, broadcasting equipment, and other scenarios requiring multi-channel audio acquisition, processing, and encoding/decoding.

Embedded Control Motherboards: Playing a core role in fields requiring certain computing power and rich I/O, such as robot controllers, drone flight control, and automation equipment.

VI. Common Problems and Solutions

Q1: How to choose between ECK41-E1N2-N and ECK41-E1-N? If your product requires firmware, mass production, and fast boot speed, choose the ECK41-E1N2-N with onboard Flash. If your project is in the prototype verification stage, or requires frequent system changes and fluctuating storage capacity requirements, the ECK41-E1-N offers more flexibility, allowing system booting via TF card or soldered eMMC chip.

Q2: Do the stamp holes and LGA interface on the core board need to be soldered?

Not necessarily. The stamp holes contain commonly used functions (such as GPIO, UART, I2C, SPI, PWM, and some display and audio pins). If your application only uses these common functions, only the stamp holes need to be soldered, simplifying the SMT process. The LGA interface mainly contains some special function pins (such as some high-speed differential signals and test points), and only needs to be soldered when these specific functions are required.

Q3: How to program and update the system on the ECB41-PGE single-board computer?

Two main methods are provided:

① TF Card Burning: Using the accompanying SDDiskTool, write the system image to the TF card, insert it into the single-board computer's card slot, and it will boot.

② USB Burning: Through the Type-C interface, using the RKDevTool, system firmware can be burned and upgraded, suitable for mass production. The single-board computer also has UART Recovery and Maskrom buttons for entering burning mode.

Q4: Is the core board stable in high or low temperature environments?

All models in the ECK41-E series are designed with a **wide temperature range (-25℃ ~ +85℃)**. The core components selected, such as the processor, memory, and Flash, are all industrial grade or conform to this temperature range. Under power and heat dissipation conditions specified in the manual, it can operate stably within the above temperature range. It is recommended to conduct high and low temperature tests in actual applications to verify its adaptability in specific scenarios.

The combination of the ECK41-E1N2-N and ECK41-E1-N core boards with the ECB41-PGE1N2-N single-board computer brings the market a fully domestically produced, high-performance, and ready-to-use embedded solution. It not only responds to the call for industrial self-sufficiency but also, with its substantial industrial-grade performance, rich functional interfaces, and convenient development support, becomes a reliable partner for engineers facing complex challenges in areas such as the Internet of Things, industrial control, and intelligent interaction. Choosing the ECK41-E means choosing a fast track to efficient, reliable, and self-reliant product development.