The Microchip LAN9252I/PT is a highly integrated 2/3-port EtherCAT SubDevice Controller (ESC) designed for industrial automation and real-time Ethernet applications. It integrates two full-duplex 100BASE-TX Ethernet PHYs, reducing external component requirements while providing a compact EtherCAT communications solution.
Each integrated PHY supports 100Mbps 100BASE-TX operation and HP Auto-MDIX, allowing either straight-through or crossover Ethernet cables to be used. 100BASE-FX fiber connectivity can also be implemented using an external fiber transceiver.
The integrated EtherCAT controller includes 4KB of Dual-Port RAM (DPRAM), 3 Fieldbus Memory Management Units (FMMUs), 4 SyncManagers and a 64-bit distributed clock. These capabilities support deterministic real-time data exchange and precise synchronization in automation and motion-control systems.
LAN9252 supports several host-interface options, including an 8/16-bit Host Bus Interface (HBI) and a low-pin-count SPI/SQI interface. The SPI/SQI controller supports single, dual and quad data lanes with clock rates up to 80MHz, providing flexible connection to microcontrollers, processors and SoCs.
For simpler applications, the device can operate in Digital I/O mode, allowing 16 digital signals to be directly controlled or monitored by the EtherCAT network without requiring a local microcontroller. An additional MII port enables three-port configurations and flexible star or tree network topologies.
The LAN9252 can be configured to operate from a single 3.3V supply using its integrated 3.3V-to-1.2V linear regulator. The LAN9252I/PT industrial version operates from -40°C to +85°C and is supplied in a 64-pin TQFP package with exposed pad, measuring approximately 10 × 10 mm.
Key Features
- Manufacturer: Microchip Technology
- Part Number: LAN9252I/PT
- Product Type: EtherCAT SubDevice Controller
- EtherCAT Ports: 2 / 3 Ports
- Integrated Ethernet PHYs: 2
- Ethernet Standard: 100BASE-TX
- Data Rate: 100Mbps
- PHY Mode: Full-Duplex 100BASE-TX
- Supports HP Auto-MDIX
- 100BASE-FX Support via External Transceiver
- Dual-Port RAM: 4KB
- FMMUs: 3
- SyncManagers: 4
- Distributed Clock: 64-bit
- Host Bus Interface: 8-bit / 16-bit
- SPI / SQI Interface
- SPI/SQI Clock: Up to 80MHz
- Supports Single / Dual / Quad SPI
- Digital I/O Mode: 16 Signals
- Additional MII Port for 3-Port Operation
- Supports Star / Tree Network Topologies
- Integrated Power Management
- Single 3.3V Supply Configuration Supported
- Operating Temperature: -40°C to +85°C
- Package: 64-TQFP-EP
- Package Body: 10 × 10 mm
- Pin Pitch: 0.5 mm
- Mounting Type: Surface Mount
- Packaging: Tray
- Product Status: In Production
Typical Applications
- Industrial Automation
- EtherCAT I/O Modules
- Servo Drives
- Motor Control Systems
- Robotics
- PLC Systems
- Industrial Communication Gateways
- Remote I/O Modules
- Factory Automation Equipment
- Motion Control Systems
- Sensor and Actuator Networks
- Embedded EtherCAT Devices
The LAN9252I/PT is well suited for industrial designs requiring a compact and highly integrated EtherCAT controller with dual Ethernet PHYs, deterministic synchronization and flexible host-interface options.
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