ENC28J60-I/SP - 10BASE-T SPI Ethernet Controller | Microchip
N.º de pieza: ENC28J60-I/SP ✓ ActivoENC28J60-I/SP Descripción general
What is an Ethernet controller? An Ethernet controller is an interface IC that connects a host processor to a physical Ethernet network. The ENC28J60 family combines a Media Access Control layer, a 10BASE-T physical layer, packet buffer memory, and an SPI interface in one device. In the hierarchy of semiconductor components, it is an Ethernet interface controller, a network interface IC, and a power-management-compatible embedded peripheral for connected embedded products.
The principal verified features are the integrated MAC and PHY, 8 Kbytes of buffer RAM, SPI connectivity, 10BASE-T operation at 10 Mbps, a 3.1 V to 3.6 V operating supply range, a maximum supply current of 180 mA, and 28 pins. The integrated PHY reduces the number of external network-interface components required, while the serial interface allows a microcontroller to control packet transfer over SPI. The -40°C to +85°C industrial range makes the -I/SP grade appropriate for industrial and other extended-temperature equipment, subject to application-specific qualification.
The ENC28J60-I/SP is a hardware network interface rather than a complete TCP/IP stack. The host processor therefore requires suitable networking software to implement the required protocols. Its 10BASE-T operation is appropriate for legacy or cost-sensitive embedded Ethernet links, but it is not a 100BASE-T replacement. The integrated 8 Kbytes of buffer RAM helps coordinate packet storage between the Ethernet interface and the SPI host, while the small 28-pin package simplifies prototype and through-hole assembly.
Typical uses include industrial monitoring equipment, embedded control systems, serial-to-Ethernet gateways, automated test equipment, and connected instrumentation. In these applications, the controller can sit between a microcontroller and an RJ45 or magnetics-based Ethernet network interface, while the host processor handles application data and higher-level networking. The SPI bus provides a practical connection to microcontrollers and other embedded processors.
A key design consideration is that the ENC28J60-I/SP is designed around 10BASE-T operation and requires careful implementation of the network interface, clock circuitry, decoupling, and PCB layout. Verify the complete pin assignment, recommended external components, and timing requirements against the manufacturer datasheet before layout release. This page combines verified manufacturer and distributor information, practical application guidance, and explicit comparison data to support component selection.
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ENC28J60/SP
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ENC28J60-I/SP Especificaciones
| Device Type | Stand-alone Ethernet controller |
| Ethernet Standard | 10BASE-T |
| Velocidad de datos | 10 Mbps |
| Integrated MAC | Yes |
| Integrated PHY | Yes |
| Buffer RAM | 8 Kbytes |
| Host Interface | SPI serial interface |
| Supply Voltage Range | 3.1 V to 3.6 V |
| Corriente de alimentación | 180 mA |
| Rango de temperatura de funcionamiento | -40°C to +85°C |
| Número de pines | 28 pins |
| Encapsulado | 28-pin SPDIP |
| Tipo de montaje | Through-hole |
| Temperature Grade | Industrial |
| Clock Requirement | Parallel-resonance crystal required by the ENC28J60 design; external clock source supported |
| Ethernet Physical Layer | Integrated 10BASE-T PHY |
Guía de configuración de pines de ENC28J60-I/SP 28-pin spdip
Configuración de pines para ENC28J60-I/SP (encapsulado 28-pin spdip). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para ENC28J60-I/SP.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
ENC28J60-I/SP es adecuado para 6 aplicacións: Industrial Ethernet Monitoring, Embedded Serial-to-Ethernet Gateway, Automated Test and Measurement Equipment, Connected Industrial Control Node, Networked Data Acquisition Unit, Legacy 10BASE-T Network Upgrade.
Industrial Ethernet Monitoring
The ENC28J60-I/SP fits industrial monitoring equipment that must expose measurements or status data over a 10BASE-T Ethernet link. Its -40°C to +85°C operating range supports extended-temperature deployments, while the integrated MAC and PHY reduce the external interface burden on the host controller. A microcontroller can use the SPI interface to exchange frames with the ENC28J60 and run the required networking stack. The 3.1 V to 3.6 V supply range and listed 180 mA supply current require careful rail and decoupling design, while the 10 Mbps rate is appropriate for supervisory data rather than high-bandwidth sensor streaming.
Recomendado
Embedded Serial-to-Ethernet Gateway
The ENC28J60-I/SP can bridge a serial or embedded control interface to a 10BASE-T network by presenting an SPI connection to the host processor. Its integrated MAC and PHY and 8 Kbytes of buffer RAM consolidate the Ethernet interface into one 28-pin SPDIP device. The host must implement or run the appropriate TCP/IP protocol stack because the controller supplies Ethernet framing rather than a complete application network stack. This arrangement is useful for legacy equipment that needs network access without redesigning the original embedded controller. The 10 Mbps limit matches typical telemetry, configuration, and supervisory traffic.
Recomendado
Automated Test and Measurement Equipment
The ENC28J60-I/SP is suitable for compact test instruments that need a wired control and data path over Ethernet. Its SPI interface allows a test-set controller to exchange commands and results with a host computer, while the integrated 10BASE-T PHY provides the network physical layer in one package. The 10 Mbps throughput is adequate for many configuration, status, and sampled-result workflows, although large continuous datasets may benefit from faster Ethernet. Designers should follow the manufacturer datasheet for the parallel-resonance crystal or external clock arrangement and place decoupling close to the 28-pin device.
Recomendado
Connected Industrial Control Node
A distributed control node can use the ENC28J60-I/SP to add wired Ethernet connectivity to a microcontroller-based actuator, controller, or sensor hub. The integrated MAC and PHY simplify the hardware footprint, and the industrial temperature range of -40°C to +85°C supports equipment deployed beyond typical room-temperature conditions. Network traffic is handled through the SPI interface, allowing the main control loop to remain independent of Ethernet frame processing. The 10BASE-T speed is most appropriate for commands, diagnostics, and periodic process data. A robust implementation also needs appropriate isolation or magnetics at the network boundary and verified clock and power-layout practices.
Recomendado
Networked Data Acquisition Unit
The ENC28J60-I/SP can add Ethernet transport to a small data-acquisition unit built around a microcontroller and analog front end. The controller moves sampled or logged data from the host processor onto a 10BASE-T network, while its 8 Kbytes of buffer RAM provides packet storage between the Ethernet interface and SPI transactions. This is practical for periodic process values, alarms, and configuration records rather than sustained high-rate waveform transfer. The 3.1 V to 3.6 V operating range allows use of a regulated 3.3 V rail, but the host and analog circuitry should use compatible partitioning to prevent noise from degrading measurements.
Recomendado
Legacy 10BASE-T Network Upgrade
The ENC28J60-I/SP can modernize a legacy embedded product that must remain on 10BASE-T while gaining an SPI Ethernet interface. It provides an integrated MAC, 10BASE-T PHY, and 8 Kbytes of buffer RAM without requiring a larger Ethernet controller package. This makes it useful for prototypes, retrofits, and equipment where 100BASE-T is unnecessary. The principal engineering trade-off is that the host must supply higher-level networking software, and the 10 Mbps physical rate is substantially below modern Fast Ethernet. For an existing PCB revision, confirm that the 28-pin SPDIP footprint and all timing requirements match before committing to the part.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ENC28J60-I/SP — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ENC28J60/SP |
|---|---|---|
| Package | 28-pin SPDIP | 28-pin SPDIP |
| Brand | Microchip Technology | Microchip Technology |
| Ethernet Standard | 10BASE-T | 10BASE-T |
| Data Rate | 10 Mbps | 10 Mbps |
| Integrated MAC | Yes | Yes |
| Integrated PHY | Yes | Yes |
| Buffer RAM | 8 Kbytes | 8 Kbytes |
| Host Interface | SPI serial interface | SPI serial interface |
Diferenciadores clave
- Industrial temperature grade (frente a ENC28J60/SP)
- Integrated Ethernet hardware (frente a ENC28J60/SP)
- Through-hole implementation (frente a ENC28J60/SP)
Notas de diseño
The verified ENC28J60 operating supply range is 3.1 V to 3.6 V, and the listed supply current is 180 mA. Provide a stable 3.3 V supply and place the manufacturer-recommended decoupling capacitors close to the device pins. Keep the Ethernet interface and clock circuitry away from noisy switching nodes. Because the supplied excerpts do not reproduce capacitor values or ripple limits, use the official datasheet for final component selection.
Follow the manufacturer layout guidance for the 10BASE-T network interface, including the placement of the required magnetic or connector-side components and controlled differential routing. The official datasheet specifically notes that the ENC28J60 design requires a parallel-resonance crystal and also permits an external clock source. Confirm the crystal network, grounding, and track geometry against the manufacturer reference circuit before fabrication.
Do not assume that the ENC28J60 implements a complete TCP/IP stack. It provides Ethernet MAC and PHY functions, packet buffering, and an SPI host interface, while higher-level protocols must be handled by the host software. Also do not substitute ENC28J60/SP for ENC28J60-I/SP in extended-temperature equipment: the verified distinction is the commercial versus industrial temperature grade.
Keep the SPI clock and data routing compact and away from Ethernet and switching-node signals. The device uses an SPI serial interface, so host-controller timing and trace loading remain important even though the Ethernet PHY is integrated. Use a grounded reference plane, avoid unnecessary stubs, and apply the manufacturer timing and layout guidance. The supplied data does not specify maximum SPI clock frequency, so that value must be taken from the official datasheet.
Información de cumplimiento
The supplied verified excerpts do not explicitly state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is recorded as not applicable because this is an industrial Ethernet controller rather than an automotive-qualified device; no automotive qualification claim was provided.
