W6100

W6100 is a hardwired TCP/IP stack internet controller chip with WIZnet technology, supporting both IPv4 and IPv6. It integrates 10/100 Ethernet MAC and PHY and supports TCP, UDP, ICMPv4/v6, IGMP, ARP, and PPPoE protocols. W6100 provides 8 independent hardware SOCKETs and 32KB internal memory, making it easy to develop Ethernet applications using socket programming. It also supports WOL (Wake on LAN) and Power Down Mode for reduced power consumption, and offers SPI and Parallel System BUS interfaces.

Block Diagram

Details

Pinout

Please refer to the datasheet.

Features

• Support Hardwired TCP/IP Protocols : TCP, UDP, IPv6, IPv4, ICMPv6, ICMPv4, IGMP, MLDv1, ARP, PPPoE
• Support IPv4/IPv6 Dual Stack
• Support 8 independent SOCKETs simultaneously with 32KB Memory
• Support SOCKET-less Command: ARP, PING, ICMPv6(PING, ARP,DAD,NA,RS) Command for IPv6 Auto-configuration& Network Monitoring
• Support Ethernet Power Down Mode & System Clock Switching for power save
• Support Wake on LAN over UDP
• Support Serial & Parallel Host Interface: High Speed SPI(MODE 0/3), System Bus with 2 Address signal & 8bit Data
• Internal 16Kbytes Memory for TX/ RX Buffers
• 10BaseT / 10BaseTe / 100BaseTX Ethernet PHY Integrated
• Support Auto Negotiation (Full and half duplex, 10 and 100-based )
• Support Auto-MDIX only on Auto-Negotiation Mode
• Not support IP Fragmentation
• 3V operation with 5V I/O signal tolerance
• Network Indicator LEDs (Full/Half Duplex, Link, 10/100 Speed, Active)
• 48 Pin LQFP & QFN Lead-Free Package (7x7mm, 0.5mm pitch)
• W5100S PIN-2-PIN Compatible

---

Documentation

datasheet

Title	Description	Notes
📄 W6100 Datasheet (EN)	Technical specifications and features of the W6100 chip	-
📄 W6100 Datasheet (KR)	Technical specifications and features of the W6100 chip	-

Software Resources

Driver

Driver

The ioLibrary means "Internet Offload Library" for WIZnet chips.
It includes drivers and application protocols.
The ioLibrary can be used for W6100 and other chips’ application designs.
These will be updated continuously.

Resource	Description
ioLibrary_Driver	Official WIZnet driver library for W5x00/W6x00 chips

info

The ioLibrary_Driver is an MCU-independent library for WIZnet W5x00, W6x00 chips.
It provides implementations of essential TCP/IP services, enabling developers to build network applications with minimal MCU dependencies.

Supported services

DHCP, DNS, MQTT, SNTP, TFTP, HTTP Server

Application Note

Application Note

Example Name	Description	Notes
📄 Interrupt (KOR)	How to use Interrupt	Interrupt handling guide for W6100
📄 Interrupt (ENG)	How to use Interrupt	Interrupt handling guide for W6100
📄 IPRAW (KOR)	How to use IPRAW	IPRAW mode guide for raw IPv4 communication
📄 IPRAW (ENG)	How to use IPRAW	IPRAW mode guide for raw IPv4 communication
📄 PSAA (KOR)	How to use PSAA	Prefer Source IPv4/IPv6 Address handling for SOCKET & SOCKET-less modes
📄 PSAA (ENG)	How to use PSAA	Prefer Source IPv4/IPv6 Address handling for SOCKET & SOCKET-less modes
📄 SLC (KOR)	How to use SLC	SLC mode guide for Socket-less command control
📄 SLC (ENG)	How to use SLC	SLC mode guide for Socket-less command control
📄 AAC (KOR)	How to implement Auto-Configuration	Stateless & Stateful IPv4/IPv6 address auto-configuration methods
📄 AAC (ENG)	How to implement Auto-Configuration	Stateless & Stateful IPv4/IPv6 address auto-configuration methods

info

These application notes explain how to use W6100’s core networking functions,
including TCP, UDP, IPRAW mode, IPv6 features, and PPPoE.

Hardware Resources

Technical Resources

Resource	Description	Notes
Reference Schematic	Typical application schematic	Includes recommended circuit design
SCH & PCB Library	TDB
Design Guide	TBD

Test & Certification

Resource	Description	Notes
Ethernet Compliance Test	TBD
Distance Test	TBD
EMC Test	TBD
Reliability Test	TBD
Certificate	TBD

Related modules

Evaluation Boards

Evaluation Boards

6100-EVB-Pico

W6100-EVB-Pico is a microcontroller evaluation board based on the Raspberry Pi RP2040 and fully hardwired TCP/IP controller W6100 – and basically works the same as Raspberry Pi Pico board but with additional Ethernet via W6100.

6100-EVB-Pico2

W6100-EVB-Pico2 is a microcontroller evaluation board based on the Raspberry Pi RP2350 and fully hardwired TCP/IP controller W6100 – and basically works the same as Raspberry Pi Pico board but with additional Ethernet via W6100.

Ethernet Module

Ethernet Module

WIZ610io

WIZ610io is the network module that includes W6100 (TCP/IP hardwired chip, include PHY), MAG-JACK (RJ45 with X’FMR) with other glue logics. It can be used as a component and no effort is required to interface W6100 and Transformer. The best advantage of the WIZ610io is that it supports IPv6. The WIZ610io is an ideal option for users who want to develop their Internet enabling systems rapidly.

WIZ610MJ

WIZ610MJ is the network module that includes W6100 (TCP/IP hardwired chip, include PHY), MAG-JACK (RJ45 with X’FMR) with other glue logics. It can be used as a component and no effort is required to interface W6100 and Transformer. The best advantage of the WIZ610MJ is that it supports IPv6. The WIZ610MJ is an option for users who want to develop their Internet enabling systems rapidly.