The W5500 is a fully hardware-based TCP/IP embedded Ethernet controller designed to simplify internet connectivity for embedded systems. It integrates the entire TCP/IP stack, along with the 10/100M Ethernet MAC and PHY layers, allowing developers to easily add network capabilities to their applications using just one chip. This makes it an ideal solution for IoT devices, industrial automation, and other embedded systems requiring reliable and fast networking.
The WIZnet W5500 features a market-proven full hardware TCP/IP stack that supports a wide range of protocols including TCP, UDP, IPv4, ICMP, ARP, IGMP, and PPPoE. It includes a 32KB on-chip buffer for efficient Ethernet packet processing. With the W5500, users can implement Ethernet applications using basic socket programming, which is faster and more straightforward than many other embedded Ethernet solutions. Additionally, the chip supports up to 8 hardware sockets, enabling simultaneous independent communication.
To make integration with microcontrollers easier, the W5500 provides an SPI (Serial Peripheral Interface) that allows seamless connection with various MCUs. The chip also uses an advanced high-speed SPI protocol capable of reaching up to 80MHz, making it suitable for high-performance network applications. To help reduce power consumption, the W5500 offers Wake-on-WLAN (WOL) and power-down modes, giving users flexibility in managing energy usage based on their application needs.
**Absolute Maximum Ratings**
It's important to note that exceeding the absolute maximum ratings may cause permanent damage to the device. Below are some key electrical specifications:
- **Electrostatic Discharge (ESD)**: The W5500 is designed to withstand certain levels of static electricity, ensuring reliability in various environments.
- **Static Lock**: The chip has built-in protection against static lock, enhancing its durability and performance.
**DC Characteristics**
The DC characteristics of the W5500 define the voltage and current ranges under which the device operates reliably. These parameters are crucial for proper circuit design and ensure stable operation across different conditions.
**Power Consumption**
Under standard test conditions (VDD = 3.3V, AVDD = 3.3V, Ta = 25°C), the W5500 demonstrates low power consumption, making it suitable for battery-powered or energy-sensitive applications.
**AC Characteristics**
The AC characteristics of the W5500 include timing parameters such as reset clock, wake-up time, crystal oscillation, SPI clock speed, transformer behavior, and polarity transformation.
- **Reset Clock**: The W5500 ensures a stable reset sequence to maintain consistent operation.
- **Wake-Up Time**: The device can wake up in as little as 10 microseconds, providing quick response times.
- **Crystal Characteristics**: The internal oscillator is optimized for stability and accuracy.
- **SPI Clock**: The W5500 supports high-speed SPI communication, enabling fast data transfer rates.
- **Transformer Characteristics**: The chip is compatible with standard Ethernet transformers, ensuring compatibility with common network infrastructure.
- **Polarity Transformation**: While the W5500 does not support auto MDIX, it works with both straight-through and crossover cables, depending on the connected device. Users can connect to switches or routers with straight-through cables and to other devices with crossover cables, or use any cable with devices that support automatic polarity correction.
Overall, the W5500 is a powerful and flexible solution for adding Ethernet connectivity to embedded systems, offering high performance, ease of use, and energy efficiency.
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