ENC28J60-I/SP

Controllers Overview

The ENC28J60-I/SP is a stand-alone Ethernet controller manufactured by Microchip Technology, designed for integration with microcontrollers equipped with a Serial Peripheral Interface (SPI). It complies with IEEE 802.3 specifications and incorporates an integrated Medium Access Control (MAC) module and a 10Base-T Physical Layer (PHY) transceiver. The device supports one 10 Mbps port operating in both full-duplex and half-duplex modes, featuring automatic polarity detection and correction. It includes an internal 8-Kbyte dual-port SRAM buffer for packet storage, hardware-managed circular receive FIFO, and an internal Direct Memory Access (DMA) controller for efficient data throughput. Communication with the host system occurs via SPI with clock speeds up to 20 MHz, supplemented by an interrupt pin for event notification.

Controllers Feature Summary

• Integrated MAC and PHY modules supporting 10Base-T Ethernet standards
• Internal 8-Kbyte dual-port SRAM buffer with configurable transmit/receive sizes
• Hardware-assisted checksum calculation and internal DMA for fast data movement
• Programmable packet filtering and wake-up capabilities based on address or pattern matching

Controllers Applications

• Embedded systems requiring low-cost Ethernet connectivity
• Industrial control networks and PLC communication interfaces
• Remote monitoring and telemetry devices
• Smart metering and utility infrastructure applications

Controllers Procurement Notes

Verify that the suffix 'SP' corresponds to the 28-pin SPDIP package type as specified in the datasheet packaging information. Confirm the temperature grade matches the industrial range of -40°C to +85°C. Ensure the ordering part number aligns with the specific silicon revision required for your application design.

Controllers Selection Notes

Select this component when a cost-effective, standalone Ethernet solution is needed for resource-constrained microcontrollers. It is suitable for designs where the host processor lacks native Ethernet peripherals but possesses an available SPI interface. Consider the external requirements for pulse transformers and bias resistors during the schematic design phase.

Controllers Part Context

The ENC28J60 belongs to the broader family of Microchip Ethernet controllers. While other variants may offer different interface options or higher data rates, the ENC28J60 specifically targets 10 Mbps applications. The '-I/' designation indicates the industrial temperature rating, distinguishing it from commercial grade versions which operate within a narrower temperature range.

Controllers Replacement Considerations

Direct replacements must maintain the 28-pin SPDIP footprint and SPI interface compatibility. Verify that any substitute component supports the same 8-Kbyte buffer architecture and IEEE 802.3 compliance to ensure functional equivalence in existing designs.