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 10/100 Mbps Ethernet MAC and PHY layers, allowing developers to add network capabilities to their applications using just one chip. This makes it an efficient and compact solution for a wide range of IoT and industrial applications.
The WIZnet W5500 features a proven, full-hardware TCP/IP stack that supports essential protocols such as TCP, UDP, IPv4, ICMP, ARP, IGMP, and PPPoE. It also includes a 32K-byte on-chip buffer for efficient Ethernet packet handling. With the W5500, users can quickly implement Ethernet-based applications using simple socket programming, which is faster and more straightforward compared to other embedded Ethernet solutions. Additionally, the chip offers 8 independent hardware sockets for simultaneous communication, making it ideal for multi-tasking network applications.
To facilitate integration with microcontrollers, the W5500 provides an SPI (Serial Peripheral Interface) that allows seamless connection to peripheral MCUs. Moreover, it uses an advanced high-efficiency SPI protocol capable of operating at up to 80 MHz, ensuring fast and reliable data transfer over the network. To further enhance energy efficiency, the W5500 includes power-down and Wake-on-Wall (WOL) modes, giving users flexibility in managing power consumption 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 ESD events, but exceeding the specified limits could lead to failure.
- **Static Lock**: The chip has built-in protection against static lock, but extreme conditions may still affect performance.
**DC Characteristics**
The DC characteristics provide detailed information about voltage levels and current requirements under various operating conditions. These parameters ensure stable and reliable operation of the W5500 in different environments.
**Power Consumption**
At a standard test condition (VDD = 3.3V, AVDD = 3.3V, Ta = 25°C), the W5500 exhibits low power consumption, making it suitable for battery-powered or energy-sensitive applications.
**AC Characteristics**
The AC characteristics cover timing and signal integrity aspects, including:
- **Reset Clock**: Defines the behavior of the internal clock after a reset.
- **Wake-up Time**: The W5500 can wake up from sleep mode in as little as 10 microseconds.
- **Crystal Characteristics**: Details about the external crystal oscillator used for clock generation.
- **SPI Clock**: Describes the timing and performance of the SPI interface.
- **Transformer Characteristics**: Information about the Ethernet transformer interface.
- **Polarity Transformation**: The W5500 does not support auto MDI/MDIX, so users must use appropriate cables when connecting to switches, routers, or other devices. However, it can automatically adjust polarity when connected to devices that support it.
Overall, the W5500 is a powerful and flexible solution for adding Ethernet connectivity to embedded systems, offering high performance, ease of use, and low power consumption.
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