| Feature | Specification |
| Manufacturer | WIZnet |
| Product Series | W7100A |
| Core Architecture | 8-bit 8051-compatible CISC |
| Program Memory (Flash) | 64 KB |
| Data Memory (RAM) | 64 KB |
| Clock Speed | Up to 25 MHz |
| Ethernet | Integrated 10BaseT/100BaseTX Ethernet MAC and PHY |
| TCP/IP Protocols Supported | TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE |
| Network Data Buffer | 32 KB (shared between TX and RX) |
| Number of Sockets | 8 independent hardware sockets |
| I/O Ports | 19 general-purpose I/O pins |
| Timers/Counters | 3 (standard 8051 timers) |
| UART | 1 full-duplex UART (up to 230 kbps) |
| Watchdog Timer | Programmable |
| External Memory Support | Up to 16 MB (available in 100-pin version) |
| Operating Voltage | 3.0V to 3.6V |
| Power Consumption | Approximately 200 mA (typical) |
| Operating Temperature Range | -40°C to +85°C |
| Package Type | 64-pin QFN (9x9 mm) |
| Special Features | - Pipelined architecture for faster instruction execution (4-5 times faster than standard 8051) |
| - Auto Negotiation and Auto MDI/MDIX support |
| - Network status LED outputs (TX, RX, Full/Half duplex, Collision, Link, and Speed) |
| - Power-down mode for reduced power consumption |
| RoHS Compliance | Yes |
| Status | Discontinued (as the W7100A test platform is no longer available) |
WIZnet