接口IC

WIZ100SR

WIZ100SR - RS232 to TCP/IP Ethernet Bridge Module | WIZnet

The WIZnet WIZ100SR is a serial-to-Ethernet gateway module that converts RS-232 serial data into TCP/IP packet streams over a 10/100 Base-T/TX Ethernet interface, integrating a W5100 hardwired TCP/IP controller, an 8051-compatible MCU, and a 10/100 Mbps Ethernet PHY on a single through-hole module with RJ45 and DB9-compatible pin header I/O. Operating from a single 3.3 V DC supply and rated for the 0 °C to +80 °C commercial temperature range, the WIZ100SR exposes the W5100's four independent hardware sockets so that TCP, UDP, ICMP, IPv4, ARP, IGMP, and PPPoE protocols are processed entirely in silicon without burdening the host MCU. A Serial-to-Ethernet (also called RS232-to-Ethernet) module is a small embedded network appliance that transparently bridges a legacy asynchronous serial port to a TCP/IP network so that older equipment without native Ethernet can be monitored, controlled, or upgraded over LAN/WAN. In the wider product taxonomy the WIZ100SR sits within Interface Modules > Communication Modules > Serial Converters > Ethernet Bridges > IoT Connectivity Modules > Embedded Networking Modules, where it belongs to the same family as the WIZ105SR (RS-485 variant), WIZ120SR, WIZ145SR, and the newer W7500-based WIZ750SR-100 series. Key features include transparent serial tunneling in TCP Server, TCP Client, and UDP modes, configurable via the WIZnet Configuration Tool over Ethernet or RS-232, plus status LEDs for link, activity, and serial traffic. The integrated W5100 silicon provides 16 KB of dedicated TX/RX buffer memory per socket, eliminating the need for an external TCP/IP software stack and freeing the host 8051 MCU for application-layer processing. Typical applications include industrial RS-232 device networking (CNC controllers, weighing scales, PLCs, access controllers), remote serial port sharing over LAN/WAN, building-automation gateways, and point-of-sale (POS) terminal retrofits. The WIZ100SR is also widely used to add Ethernet connectivity to legacy instrumentation that lacks an embedded network stack. Design considerations include providing adequate 3.3 V decoupling near the module pins and reserving space for the RJ45 magnetics footprint. Compared with the newer WIZ750SR-100, the WIZ100SR is a cost-effective legacy platform, but the W7500-based successor offers a Cortex-M0 core, an IP101GRI PHY, and improved software compatibility for green-field designs. This page synthesizes distributor pricing, drop-in module alternatives within the WIZ1xx family, and practical design notes not consolidated on the manufacturer product page.