LAN9250TI/ML - 10/100 Ethernet Controller | Microchip
MPN: LAN9250TI/ML ✓ Hoạt độngLAN9250TI/ML Tóm tắt
An Ethernet controller is an interface IC that connects an embedded processor or microcontroller to an Ethernet physical layer. The LAN9250TI/ML combines the Ethernet MAC, PHY, host interface, transmit and receive buffering, and interrupt support in one package. This integration reduces the number of external interface components and simplifies firmware access to Ethernet connectivity in industrial, communications, and embedded equipment.
The principal interface choices provide different design tradeoffs. An 8-bit or 16-bit parallel interface can offer straightforward register access and useful throughput for microcontrollers with dedicated external bus resources. SPI or SQI uses fewer host pins and can suit systems with limited connector pins. A configurable host interrupt allows the controller to notify the processor of internal events, while the serial interface accesses system control and status registers, internal FIFOs, and memories.
LAN9250TI/ML integrates the 10/100 Base-T/TX PHY with the Ethernet controller rather than requiring a separate physical-layer device for each network port. The 10/100 designation covers 10 Mbps and 100 Mbps Ethernet operation. Its 64-QFN construction supports compact embedded designs while providing numerous signal and supply connections for the parallel, serial, clock, interrupt, and Ethernet functions.
Typical applications include industrial Ethernet gateways, serial-to-Ethernet equipment, programmable logic controllers, test instruments, factory automation controllers, and embedded monitoring systems. The parallel interface is particularly useful where a processor has sufficient external bus pins, while SPI or SQI reduces host pin requirements in compact connected products.
The primary design consideration is host interface selection. Choose 8-bit or 16-bit operation when bus width and access speed are priorities; choose SPI or SQI when wiring density is more important. PCB layout must preserve the controller and PHY reference-network implementation, provide suitable power distribution, and route Ethernet differential pairs according to the manufacturer data sheet.
This product page combines the LAN9250 family capabilities with practical interface guidance, application-specific design considerations, verified source links, and a comparison framework. It is intended to help engineers determine whether the LAN9250TI/ML architecture, package, temperature grade, and host-interface options fit an embedded Ethernet design.
Bộ thay thế dễ dàng lắp đặt cho LAN9250TI/ML — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với LAN9250TI/ML (cùng hình factor và footprint) — khác nhau ở Package, Product Type, Mounting Type, Ethernet Speed, Host Interface.
LAN9250/ML
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Xem tài liệu →LAN9252TI/ML
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Xem tài liệu →LAN9250TI/ML Thông số kỹ thuật
| Device Type | 10/100 Base-T/TX Ethernet controller with integrated PHY |
| Ethernet Data Rates | 10 Mbps and 100 Mbps |
| Maximum Host Interface Width | 16 bits |
| Host Interface Options | 8-bit or 16-bit parallel, SPI, and SQI |
| Integrated PHY | Yes, integrated 10/100 Base-T/TX PHY |
| Supply Voltage Range | 1.8 V to 3.3 V |
| Khoảng nhiệt độ hoạt động | -40°C to +85°C |
| Temperature Grade | Industrial |
| Package Type | 64-pin QFN |
| Package Dimensions | 9 mm x 9 mm |
| Package Code | QCCN |
| Package Shape | Square |
| Kiểu lắp đặt | No-lead surface mount |
| Packaging Type | Tape and reel |
| Host Interrupt | Configurable host interrupt pin |
| Serial Interface Function | SPI and Quad SPI slave access to system CSRs, FIFOs, and memories |
Hướng dẫn cấu hình chân LAN9250TI/ML square
Cấu hình chân cho LAN9250TI/ML (square gói). Số thứ tự chân, chức năng và sơ đồ kết nối được xác định trong tài liệu thông số kỹ thuật của nhà sản xuất. Tham khảo nó để biết footprint và hướng dẫn hàn chính xác.
Không có dữ liệu chân cụ thể sẵn có cho LAN9250TI/ML.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
LAN9250TI/ML phù hợp cho 6 Áp dụngs: Industrial Ethernet Gateway, Serial-to-Ethernet Equipment, Programmable Logic Controller, Embedded Test and Measurement Instrument, Factory Monitoring Node, Networked Embedded Control Module.
Industrial Ethernet Gateway
The LAN9250TI/ML fits an industrial Ethernet gateway because it combines a 10/100 MAC and integrated 10/100 Base-T/TX PHY in one 64-QFN device. A 16-bit parallel interface can provide efficient register and packet-buffer access when the host processor has sufficient bus resources, while SPI or SQI can preserve host pins on a more compact controller. The -40°C to 85°C industrial rating supports equipment expected to operate across extended ambient temperatures. Ethernet magnetics, surge protection, grounding, and the manufacturer reference network must be designed around the integrated PHY rather than treated as an afterthought.
Được đề xuất
Serial-to-Ethernet Equipment
A serial-to-Ethernet product can use the LAN9250TI/ML to bridge a host processor to a 10/100 network without adding a separate PHY. The SPI or SQI interface is attractive when the enclosure provides few connector pins, while the 8-bit and 16-bit parallel choices support designs that prioritize bus throughput or deterministic access. The 1.8 V to 3.3 V operating range permits use with both lower-voltage and common 3.3 V host systems. Firmware should use the documented interrupt and FIFO behavior to avoid unnecessary polling, particularly when serial link bandwidth is shared with peripheral traffic.
Được đề xuất
Programmable Logic Controller
The LAN9250TI/ML is suitable for programmable logic controller communication modules requiring a compact wired-network interface. Its integrated 10/100 PHY reduces the number of active components around the controller, and the selectable parallel or serial host interface allows the PLC processor architecture to determine the appropriate balance between wiring and transfer rate. The 64-pin 9 mm by 9 mm QFN requires careful exposed-pad thermal design and a controlled Ethernet layout. For installations with long cables or industrial transients, external protection and isolation strategy must be evaluated separately from the controller's own operating ratings.
Được đề xuất
Embedded Test and Measurement Instrument
The LAN9250TI/ML can add networked control, data upload, and remote diagnostics to an embedded test instrument. The 16-bit parallel host interface can suit instruments with a processor bus optimized for sustained transfers, while SPI or SQI provides a practical choice for compact instruments whose connector count is constrained. Its 10/100 Ethernet capability supports management traffic even when the measurement workflow does not require gigabit throughput. Designers should assess clocking, interrupt latency, FIFO behavior, and isolation requirements for bench equipment while following the manufacturer reference-network and layout instructions.
Được đề xuất
Factory Monitoring Node
A compact factory monitoring node can use the LAN9250TI/ML to connect sensors, counters, and diagnostic records over a 10/100 Ethernet network. SPI or SQI is useful when the node also contains multiple sensors and requires host-pin conservation, while the parallel interface supports designs with heavier traffic or frequent status polling. The industrial temperature range of -40°C to 85°C is appropriate for many protected factory environments, although enclosure temperature rise must remain within the device limits. Ethernet surge protection, grounding, connector isolation, and firmware reconnect behavior remain critical subsystem-level requirements.
Được đề xuất
Networked Embedded Control Module
The LAN9250TI/ML is appropriate for a networked embedded control module that must expose configuration, status, and real-time process data to a remote host. The configurable host interrupt permits event-driven firmware operation, reducing the need for continuous register polling, and the internal FIFOs help decouple packet processing from host-bus activity. Choose the parallel interface for higher bus bandwidth or SPI/SQI for lower pin count. Because the controller includes the Ethernet PHY, the board layout must reserve the supported reference components and route the Ethernet pair as a controlled differential pair within the manufacturer's layout constraints.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LAN9250TI/ML — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | LAN9250/ML | LAN9252TI/ML |
|---|---|---|---|
| Package | 64-QFN (9x9) | 64-QFN (9x9) | 64-QFN (9x9) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
Bảo phân biệt quan trọng
- Supports parallel and low-pin-count serial host interfaces (vsLAN9252TI/ML)
- Combines controller and PHY in one 64-QFN device (vsLAN9250/ML)
- Industrial temperature capability (vsLAN9252TI/ML)
Ghi chú thiết kế
Implement the Ethernet reference network and differential routing according to the Microchip LAN9250 data sheet. The integrated PHY depends on correct component values, placement, and trace geometry, so the reference schematic should be treated as an electrical requirement rather than an optional example. Keep the differential pair continuous, minimize discontinuities and stubs, provide the specified clearances, and route the pair away from switching nodes and high-current paths. Confirm the exposed-pad connection and land pattern against the 64-pin QFN package drawing before releasing artwork.
Plan separate clean supply paths for the digital, analog, and Ethernet-related sections, then connect them at the device according to the manufacturer power-application diagram. Use the specified bypass-capacitor values and placement next to the relevant supply pins. Verify the 1.8 V to 3.3 V operating range against every rail in the design, including processor I/O levels. Where a 3.3 V system also includes lower-voltage domains, do not infer level compatibility solely from the controller's supply range; use a separate host-interface voltage plan.
The 64-QFN has an exposed thermal pad whose connection and copper area should follow the package drawing and land-pattern guidance. Provide surrounding ground copper where permitted without compromising Ethernet routing or return-path continuity, and avoid thermal discontinuities beneath the device. Validate the assembled board at the highest expected ambient temperature and maximum network-processing load. Estimated: with P_D equal to device dissipation and theta_JA equal to the selected board's junction-to-ambient thermal resistance, use the relationship T_J = T_A + (P_D x theta_JA) to screen the design before environmental testing.
Do not select a replacement from Ethernet speed and package dimensions alone. Verify host-interface width, serial signal functions, interrupt polarity, supply pins, clock requirements, exposed-pad connection, reference-network values, and register compatibility. The LAN9250/ML and LAN9252TI/ML are same-family candidates, but production substitution should be approved only after checking their complete pin and electrical descriptions. Firmware should also avoid assuming that an identical MAC/PHY feature set guarantees identical interrupt or FIFO behavior across family members.
Thông tin tuân thủ
Compliance status should be confirmed against the current manufacturer product documentation or declaration for the ordered device.
