W7100A
Overview
iMCU W7100A is the one-chip solution which integrates an 8051 compatible micro-controller, 64KB SRAM and hardwired TCP/IP core for high performance and easy development. The TCP/IP core is a market-proven hardwired TCP/IP stack with an integrated Ethernet MAC & PHY. The Hardwired TCP/IP stack supports the TCP, UDP, IPv4, ICMP, ARP, IGMP and PPPoE which has been used in various applications for years.
Key Features
- Industrial standard 8051
- Pipelined architecture 4~5 times faster than other 8051
- 2 data pointers for fast memory block processing
- 64KByte Flash, 64Kbyte SRAM, 2Kbyte Boot ROM, 255Byte Data Flash
- External 11.0592MHz operation frequency for internal PLL logic
- Interrupt Controller : 2 priority levels / 4 external interrupt sources / 1 watchdog interrupt
- Four 8 bit I/O ports
- Three timers/counters
- Full Duplex UART
- Programmable Watchdog Timer
- Hardwired TCP/IP protocols
- TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE
- Un-attackable hardware network engine for preventing network attacks such as flooding, spoofing, injection
- 8 Independent hardware socket
- Internal 32Kbytes memory for TCP/IP packet processing
- 10BaseT / 100Base TX Ethernet PHY Embedded
- Support Auto-Negotiation (Full & Half Duplex, 10 & 100 Based)
- Support Auto-MDIX
- 3V Operation with 5V I/O signal tolerance
- 100LQFP (13x13mm), 64QFN (10x10mm) Lead Free Package
Block Diagram

Download
Documents
W7100A Datasheet V1.2.5
- Last Update: 2016. 08.25
W7100A Chip Erratasheet v1.1.0
- Last Update: 2012.09.18
Limitation Note – ARP problem in the NLB environment
- Last Update: 2018.03.12
Comparison Sheet of W7100 & W7100A
- Differences between W7100A and W7100_v1.1
W7100A Application Note (Docs & Sample Codes)
- TCP, UDP, DHCP, DNS_Client, DDNS, HTTP_Server, HTTP_Client, Telnet, Serial to Ethernet, IPRAW, MACRAW, UART, Timer, LCD, I2C, Code Flash Programming, Data Flash Programming, External Memory, WDTimer
- KEIL uVision 3 and 4 IDE Project
Drivers / Protocol Libraries
W7100A Driver
- W7100A/ W7100 Integrated Driver (updated on 2013.04.16)
- Produced by KEIL uVision 4 IDE
Utility
WIZISP & Programming Guide
- Last Update: 2012.11.26
- Version : 2.1.