ENC28J60/SS - 10Mbps SPI Ethernet Controller | Microchip
MPN： ENC28J60/SS ✓ 啟用中ENC28J60/SS 概覽
What is a stand-alone Ethernet controller? It is an Ethernet interface integrated circuit that connects a host microcontroller or processor to a physical Ethernet network. The ENC28J60/SS combines MAC and PHY functions with packet buffering, while the host communicates through SPI rather than a parallel bus. Its 10 Mbps 10BASE-T capability makes it suitable for legacy and low-bandwidth embedded networks, especially where board area and system cost are important.
Key verified features include 10 Mbps Ethernet operation, integrated MAC and PHY, 8 KB of buffer RAM, SPI interface, a 28-pin SSOP package, and a 3.1 V to 3.6 V supply range. The controller is designed to reduce host-side interface complexity and can be used in systems where the connected host already has sufficient processing capacity for the required networking software.
The ENC28J60/SS includes the MAC and PHY in one package, allowing an embedded system to implement Ethernet communication without a separate external Ethernet PHY. Its buffer RAM supports packet handling between the SPI host interface and the Ethernet physical layer. The manufacturer product page identifies it as a 28-pin 10BASE-T stand-alone Ethernet controller with 8 Kbytes of buffer RAM.
Typical applications include embedded control systems, industrial automation equipment, data loggers, building automation controllers, network-connected sensors, and microcontroller platforms requiring 10BASE-T connectivity. The SPI interface allows the device to be paired with host controllers such as STM32, ATmega, PIC, or other embedded processors that provide the required firmware.
When designing around the ENC28J60/SS, confirm the 3.1 V to 3.6 V operating supply, use the manufacturer-recommended 25 MHz parallel-resonance crystal arrangement, and provide the required magnetic-interface and Ethernet physical-layer components. Verify the exact SSOP footprint, pin assignment, thermal conditions, and host timing requirements against the manufacturer datasheet before layout release.
直接替換替代品，適用於 ENC28J60/SS — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ENC28J60/SS （相同外形與佔位） — 差異在於 Package, Buffer RAM, Product Type, Ethernet Standard, Crystal Type.
ENC28J60-I/SS
✅ 直接替換聯絡詢價
查看資料表 →ENC28J60/ML
✅ 直接替換聯絡詢價
查看資料表 →ENC28J60T-I/SO
✅ 直接替換📋 參考替代品（不在目錄中）
ENC28J60/SO
✅ 直接替換聯絡詢價
查看資料表 →ENC28J60-I/SO
✅ 直接替換聯絡詢價
查看資料表 →ENC28J60/SS 規格
| Product Type | Stand-alone Ethernet controller |
| Ethernet Data Rate | 10 Mbps |
| Ethernet Standard | 10BASE-T |
| Supply Voltage Range | 3.1 V to 3.6 V |
| 介面類型 | SPI serial interface |
| Integrated Functions | MAC and PHY |
| Buffer RAM | 8 KB |
| 腳位數 | 28 pins |
| 封裝 | 28-pin SSOP |
| 工作溫度範圍 | 0°C to +70°C |
| 供應電流 | 160 mA |
| Oscillator Frequency | 25 MHz |
| Oscillator Requirement | Parallel-resonance crystal |
| Ethernet Compliance | IEEE 802.3 |
ENC28J60/SS 28-pin ssop 腳位配置指南
ENC28J60/SS（28-pin ssop 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： ENC28J60/SS.
請參閱 資料表 以查看完整腳位配置。
典型應用
ENC28J60/SS 適用於 6 應用s: Embedded Data Logger, Building Automation Controller, Networked Sensor Node, Microcontroller Development Board, Industrial Control Gateway, Remote Equipment Monitor.
Embedded Data Logger
The ENC28J60/SS fits an embedded data logger that periodically sends records to a 10BASE-T network. Its 10 Mbps Ethernet rate is appropriate for supervisory traffic, configuration updates, and status reporting rather than high-throughput video or bulk storage transfer. The host controller can use SPI to access the integrated MAC and PHY while the 8 KB buffer RAM helps absorb packet traffic. Design the board with the manufacturer-recommended 25 MHz parallel-resonance crystal, network magnetics, controlled 3.3 V supply, and Ethernet layout guidance. The principal trade-off is the 10 Mbps ceiling, which should be checked against worst-case logging bursts and retransmission behavior.
推薦
Building Automation Controller
ENC28J60/SS is suitable for building-automation equipment that must connect sensors, relays, and supervisory software over legacy 10BASE-T infrastructure. The integrated MAC and PHY reduce the number of external network components, while SPI keeps the host interface compact and broadly available on microcontrollers. The device should be paired with a host that can service Ethernet interrupts and run the required protocol stack. Because the verified ENC28J60/SS temperature range is 0°C to +70°C, confirm enclosure temperature and use a suitably qualified variant when environmental limits exceed that range.
推薦
Networked Sensor Node
A compact sensor node can use ENC28J60/SS to add wired Ethernet without a separate PHY. The 10 Mbps 10BASE-T interface is useful for remote monitoring, environmental sensing, and industrial telemetry links where periodic packets are more common than continuous multimedia traffic. The host communicates through SPI and can buffer measurements or status information before transmission. Layout quality is especially important: maintain the manufacturer-recommended separation and routing around the Ethernet interface, provide proper termination and magnetics, and validate signal integrity and radiated emissions against the applicable product requirements.
推薦
Microcontroller Development Board
ENC28J60/SS is a practical Ethernet add-on for SPI-capable microcontroller development boards. It provides a complete 10BASE-T endpoint for firmware experiments involving TCP/IP, UDP, DHCP, and remote control without requiring a full host Ethernet interface. The 28-pin SSOP package helps keep the interface compact, but the board must still include the required crystal network, isolation or magnetics, RJ45-related components, and power decoupling. Use the manufacturer pinout and reference circuit carefully because alternate SPI controllers and libraries may assume different chip-select, interrupt, reset, or timing conventions.
推薦
Industrial Control Gateway
ENC28J60/SS can serve as a low-bandwidth Ethernet interface in an industrial control gateway that bridges local serial or sensor data to a supervisory network. Its integrated MAC, PHY, and 8 KB buffer RAM can simplify the hardware stack, while SPI provides a manageable connection to a microcontroller or application processor. The controller is best suited to command, telemetry, and configuration traffic; validate throughput and latency before using it for demanding factory data streams. Confirm the 3.1 V to 3.6 V supply tolerance and the 0°C to +70°C operating range against the gateway enclosure conditions.
推薦
Remote Equipment Monitor
The ENC28J60/SS can add remote monitoring capability to pumps, access-control equipment, or laboratory instruments that need occasional Ethernet connectivity. Its 10 Mbps rate is sufficient for telemetry, alarms, configuration files, and web or serial-to-Ethernet bridging functions when traffic is modest. The 8 KB buffer RAM helps manage short packet bursts, but firmware must still handle buffer pressure and network recovery. Use a stable 3.3 V regulator, follow the manufacturer’s 25 MHz crystal guidance, and validate the RJ45 and magnetics implementation for the required isolation and environmental conditions.
推薦
推薦產品摘要
工程參考資料，適用於 ENC28J60/SS — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ENC28J60-I/SS | ENC28J60/ML | ENC28J60T-I/SO | ENC28J60/SO | ENC28J60-I/SO |
|---|---|---|---|---|---|---|
| Package | 28-pin SSOP | 28-pin SSOP | 28-pin SSOP | 28-pin SSOP | 28-pin SSOP | 28-pin SSOP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
主要差異化特點
- Integrated MAC, PHY, and SPI host interface (對比ENC28J60-I/SS)
- 10BASE-T operation at 10 Mbps (對比ENC28J60-I/SS)
- 8 KB integrated buffer RAM (對比ENC28J60-I/SS)
設計說明
Place the ENC28J60/SS crystal and its required load network close to OSC1 and OSC2, and follow the manufacturer oscillator circuit. The verified data specifically calls out a 25 MHz parallel-resonance crystal; using the wrong resonance mode or excessive trace loading can shift the Ethernet timing. Keep the crystal loop compact and route it away from noisy switching nodes and Ethernet magnetics.
Implement the Ethernet physical layer with the manufacturer-recommended magnetics, termination, and controlled-impedance routing. Keep the PHY differential and magnetics-related copper paths short, continuous, and isolated from high-current switching paths. Confirm the final layer stack, via strategy, and isolation requirements against the Microchip data sheet and the selected network magnetics before fabrication.
Design the 3.3 V rail to stay within the verified 3.1 V to 3.6 V supply range during startup, Ethernet activity, and temperature changes. Place local decoupling near the supply pins and verify regulator stability, transient response, and startup sequencing. Because the verified list shows 160 mA supply current, include adequate regulator margin and confirm the actual current from the manufacturer data sheet for the selected operating mode.
Do not assume that any SPI Ethernet controller is a drop-in replacement. ENC28J60/SS relies on a specific pin assignment, SPI mode and timing, interrupt behavior, reset requirements, crystal arrangement, and host-side firmware contract. Validate the alternate device's pinout, electrical ratings, driver compatibility, and Ethernet physical-layer requirements before substituting it on an existing PCB.
合規資訊
The supplied data identifies IEEE 802.3 Ethernet compliance but does not provide verified RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 status.