ENC28J60/SP

Controllers Overview

The ENC28J60/SP is a stand-alone Ethernet controller manufactured by Microchip Technology, designed for embedded network interfaces. It integrates a MAC and a 10Base-T PHY, supporting IEEE 802.3 specifications with full and half-duplex modes. The device communicates via an SPI interface operating at clock speeds up to 20 MHz. It features an 8-Kbyte dual-port SRAM buffer, hardware-managed circular receive FIFO, and internal DMA for data movement. Electrical characteristics include an operating voltage range of 3.1V to 3.6V (typical 3.3V), 5V tolerant inputs, and an industrial temperature range of -40°C to +85°C. The component is housed in a 28-pin SPDIP package.

Controllers Feature Summary

• Integrates MAC and 10Base-T PHY with automatic polarity detection and correction
• Supports programmable packet filtering, wake-up on logical AND/OR conditions, and pattern matching
• Includes internal DMA module and hardware-assisted checksum calculation for network protocols
• Features two programmable LED outputs for link and activity status indication

Controllers Applications

• Embedded systems requiring standard Ethernet connectivity
• Connected appliances and cost-sensitive network devices
• Industrial control systems needing reliable wired communication

Controllers Procurement Notes

Verify the specific suffix 'SP' corresponds to the 28-pin SPDIP package variant when sourcing. Confirm that the required operating environment falls within the specified industrial temperature range of -40°C to +85°C. Ensure the host system provides a stable 3.3V power supply and utilizes a 25 MHz oscillator or external clock source as defined in the electrical specifications.

Controllers Selection Notes

Select this component for applications requiring a low-pin-count, stand-alone Ethernet solution compatible with SPI-based microcontrollers. It is suitable for designs where board space and integration complexity must be minimized compared to larger footprint controllers. Verify that the host MCU supports the necessary SPI clock rates and has sufficient GPIO resources for chip select, reset, and interrupt handling.

Controllers Part Context

The ENC28J60 series includes variants such as the SOIC, SSOP, and QFN packages. The /SP suffix specifically denotes the 28-pin Shrink Small Outline Package (SPDIP). Other commercial grade versions may have different temperature ranges, but the -I designation typically indicates the industrial rating found across the package options.

Controllers Replacement Considerations

Direct pin-compatible replacements are limited due to the integrated MAC/PHY architecture. Review alternative standalone Ethernet controllers from other manufacturers that offer similar SPI interfaces and 10BASE-T support, ensuring compatibility with existing firmware drivers and PCB layout constraints.