{"id":1962,"date":"2026-02-05T12:05:46","date_gmt":"2026-02-05T03:05:46","guid":{"rendered":"http:\/\/3.36.106.146\/?post_type=product&#038;p=1962"},"modified":"2026-02-13T11:17:29","modified_gmt":"2026-02-13T02:17:29","slug":"w5100s-tcp-ip-chip","status":"publish","type":"product","link":"https:\/\/twarelab.com\/en\/product\/w5100s-tcp-ip-chip\/","title":{"rendered":"W5100S &#8211; TCP\/IP Chip"},"content":{"rendered":"<p><strong><span style=\"font-size: 14px;\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/43.201.54.160\/wp-content\/uploads\/2026\/02\/w5100s_pm-300x170.png\" alt=\"\" width=\"124\" height=\"70\" class=\"alignleft wp-image-2027\" srcset=\"https:\/\/twarelab.com\/wp-content\/uploads\/2026\/02\/w5100s_pm-300x170.png 300w, https:\/\/twarelab.com\/wp-content\/uploads\/2026\/02\/w5100s_pm-scaled-600x341.png 600w, https:\/\/twarelab.com\/wp-content\/uploads\/2026\/02\/w5100s_pm-1024x582.png 1024w, https:\/\/twarelab.com\/wp-content\/uploads\/2026\/02\/w5100s_pm-768x436.png 768w, https:\/\/twarelab.com\/wp-content\/uploads\/2026\/02\/w5100s_pm-1536x873.png 1536w, https:\/\/twarelab.com\/wp-content\/uploads\/2026\/02\/w5100s_pm-2048x1164.png 2048w, https:\/\/twarelab.com\/wp-content\/uploads\/2026\/02\/w5100s_pm-18x10.png 18w\" sizes=\"auto, (max-width: 124px) 100vw, 124px\" \/>W5100S is a hardwired TCP\/IP stack internet controller chip with WIZnet technology, which provides easy internet connectivity to an external MCU via SPI or Parallel System BUS. The SPI interface supports up to 70MHz clock speed, while the Parallel System BUS provides higher data throughput for faster network communication. W5100S integrates an embedded Ethernet MAC and PHY, allowing developers to build Ethernet applications easily through socket programming.<\/span><\/strong><\/p>\n<hr \/>\n<h2>Features<\/h2>\n<ul>\n<li><span style=\"font-size: 14px;\"><strong>Support Hardwired Internet Protocols: TCP, UDP, WOL over UDP, ICMP, IGMPv1\/v2, IPv4, ARP, PPPoE<\/strong><\/span><\/li>\n<li><span style=\"font-size: 14px;\"><strong>Support 4 Independent Hardware SOCKETs simultaneously<\/strong><\/span><\/li>\n<li><span style=\"font-size: 14px;\"><strong>Support SOCKET-less Command: ARP-Request, PING-Request<\/strong><\/span><\/li>\n<li><span style=\"font-size: 14px;\"><strong>Support Ethernet Power Down Mode &amp; Main Clock gating for power save<\/strong><\/span><\/li>\n<li><span style=\"font-size: 14px;\"><strong>Support Wake on LAN over UDP<\/strong><\/span><\/li>\n<li><span style=\"font-size: 14px;\"><strong>Support Serial &amp; Parallel Host Interface: High Speed SPI(MODE 0\/3), Parallel System Bus with 2 Address signal &amp; 8bits Data<\/strong><\/span><\/li>\n<li><span style=\"font-size: 14px;\"><strong>Internal 16 Kbytes Memory for TX\/ RX Buffers<\/strong><\/span><\/li>\n<li><span style=\"font-size: 14px;\"><strong>Not support IP Fragmentation<\/strong><\/span><\/li>\n<li><span style=\"font-size: 14px;\"><strong>Not Maintain ARP-cache Table<\/strong><\/span><\/li>\n<li><span style=\"font-size: 14px;\"><strong>10BaseT\/100BaseTX Ethernet PHY Integrated<\/strong><\/span><\/li>\n<li><span style=\"font-size: 14px;\"><strong>Support Auto Negotiation (Full\/Half Duplex, 10\/100 Speed)<\/strong><\/span><\/li>\n<li><span style=\"font-size: 14px;\"><strong>Support Auto-MDIX when Auto-Negotiation Mode.<\/strong><\/span><\/li>\n<li><span style=\"font-size: 14px;\"><strong>3.3V operation with 5V I\/O signal tolerance<\/strong><\/span><\/li>\n<li><span style=\"font-size: 14px;\"><strong>LED outputs (Full\/Half Duplex, Link, 10\/100 Speed, Active)<\/strong><\/span><\/li>\n<li><span style=\"font-size: 14px;\"><strong>Two types of packages: 48 Pin LQFP &amp; QFN Lead-Free Package (7x7mm, 0.5mm pitch)<\/strong><\/span><\/li>\n<\/ul>\n<h2>Documents<\/h2>\n<ul>\n<li><a href=\"https:\/\/docs.wiznet.io\/img\/products\/w5100s\/w5100s-ds-v128e.pdf\"><strong><span style=\"font-size: 14px;\">Datasheet<\/span><\/strong><\/a><\/li>\n<li><a href=\"https:\/\/docs.wiznet.io\/img\/products\/w5100s\/w5100s-errata-en-v100.pdf\"><strong><span style=\"font-size: 14px;\">Errata<\/span><\/strong><\/a><\/li>\n<li><a href=\"https:\/\/github.com\/Wiznet\/Hardware-Files-of-WIZnet\/blob\/master\/02_iEthernet\/W5100S\/Reference%20Schematic\/W5100S_Ref_Schematic_V120_use_trans.pdf\"><strong><span style=\"font-size: 14px;\">Reference Schematic<\/span><\/strong><\/a><\/li>\n<\/ul>\n<h2>Driver<\/h2>\n<ul>\n<li><a href=\"https:\/\/github.com\/Wiznet\/ioLibrary_Driver\"><span style=\"font-size: 14px;\"><strong>ioLibrary_Driver<\/strong><\/span><\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p><strong><span style=\"font-size: 14px;\">Fast Ethernet based IC supporting 4 sockets<\/span><\/strong><\/p>\n<p><strong><span style=\"font-size: 14px;\">A cost-optimized IC in the WIZnet lineup<\/span><\/strong><\/p>","protected":false},"featured_media":1977,"comment_status":"open","ping_status":"closed","template":"","meta":{"_themeisle_gutenberg_block_has_review":false},"product_brand":[124],"product_cat":[131,129,130],"product_tag":[135,136],"class_list":{"0":"post-1962","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-wiznet","7":"product_cat-4-sockets","8":"product_cat-ic","9":"product_cat-phy-embedded","10":"product_tag-tcp-ip-chip","11":"product_tag-w5100s","13":"first","14":"instock","15":"taxable","16":"shipping-taxable","17":"purchasable","18":"product-type-simple"},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/twarelab.com\/en\/wp-json\/wp\/v2\/product\/1962","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/twarelab.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/twarelab.com\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/twarelab.com\/en\/wp-json\/wp\/v2\/comments?post=1962"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/twarelab.com\/en\/wp-json\/wp\/v2\/media\/1977"}],"wp:attachment":[{"href":"https:\/\/twarelab.com\/en\/wp-json\/wp\/v2\/media?parent=1962"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/twarelab.com\/en\/wp-json\/wp\/v2\/product_brand?post=1962"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/twarelab.com\/en\/wp-json\/wp\/v2\/product_cat?post=1962"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/twarelab.com\/en\/wp-json\/wp\/v2\/product_tag?post=1962"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}