Introduction

The SP2301 Linux EVB is a high-integration embedded Linux development board designed by WIZnet for industrial IoT and edge computing applications. Powered by a Cortex-A5 core-based SP2301 industrial-grade module, this EVB provides a feature-rich platform for robust and scalable industrial solutions.

Its design ensures that developers can easily implement reliable communication and automation systems, with built-in support for dual-port Ethernet through WIZnet's W5100S-io or W5500-io modules.

Key Features at a Glance

• Processor: Cortex-A5 core industrial module (SP2301)

• Operating System: Linux/RTOS support

• Ethernet Ports: Dual-port 100M Ethernet

  • Control Plane: SP2301 core board direct connection

  • Data Plane: W5100S-io / W5500-io expansion (hardware TCP/IP stack)

• Wireless:

  • 4G full-netcom (via Mini PCIe)

  • WiFi 6 / BT 5.0 (via M.2)

• Industrial Buses:

  • 4x RS485 (with direction control + surge protection)

  • 2x CAN bus

• Storage:

  • Micro TF card slot

  • QSPI Flash (W25Q32JVSSIQ*1)

• Expansion: 90 programmable GPIOs, I2C, UART, SPI

• Display / Vision: Dual MIPI CSI/DSI (camera + display interface)

• Power Input: 9-36V wide voltage DC input

• Temperature Range: -40°C to +85°C (industrial grade)

• Protection: ESD, power isolation, reverse polarity protection, signal impedance matching

Detailed Specifications

Power

• Input: DC005 jack, 9V ~ 36V wide voltage range

• Power architecture: 4V / 3.3V / 1.8V hierarchical power management

Ethernet

• SP2301 core Ethernet: 100 Mbps for control

• Expansion Ethernet: W5100S-io / W5500-io 100 Mbps for data, with hardware TCP/IP offload

USB

• Type: Type-C 16P

• Support: USB OTG functionality

Indicators

• Power indicator LED

• 4G network status LED

• GPIO user-controllable LED

Cellular Communication

• Interface: Mini PCIe slot (50 x 32 mm)

• Supported Modules: Universal 4G modules

• Antenna: IPEX FPC / IPEX to SMA elbow onboard antenna

• SIM: Micro SIM self-ejecting slot

WiFi / Bluetooth

• Interface: M.2 slot (30 x 22 mm)

• Supported Modules: Universal M.2 WiFi/BT (SDIO)

• Antenna: IPEX FPC / IPEX to SMA elbow onboard antenna

Expansion Interfaces

• Connectors: 3x 2.54mm 2x15 pin headers

• Functions: GPIO, I2C, UART, SPI

Dual-Port Ethernet: Reliable Separation of Control and Data

The unique dual-port design of the SP2301 Linux EVB separates the control plane and data plane physically:

• The SP2301 native Ethernet port handles control signals, commands, and system management.

• The W5100S-io / W5500-io expansion port focuses on high-speed data transfer, with hardware TCP/IP acceleration, reducing CPU load and increasing throughput.

This design improves system stability, security, and communication integrity — critical in industrial applications where control and data flows must not interfere with each other.

Industrial-Grade Reliability

The SP2301 Linux EVB is built for harsh conditions:

• Wide temperature support: -40°C to +85°C

• Robust power design: handles voltage fluctuations and supports reverse connection protection

• ESD protection and signal integrity design

These features ensure the board can be deployed confidently in factory automation, smart grid, transportation, and other demanding environments.

Conclusion

With its comprehensive connectivity, flexible expansion, and dual-port Ethernet capability via the W5100S-io / W5500-io, the SP2301 Linux EVB is a powerful solution for developers creating next-generation industrial IoT devices and edge gateways. Its modular design accelerates prototyping, testing, and scaling to mass production, while its industrial-grade reliability ensures long-term, stable operation in critical applications.