Skip to main content

LAN9252

LAN9252

EtherCAT Slave Controller

The LAN9252 is a ethercat slave controller from Microchip Technology. View the full LAN9252 datasheet below including key specifications, pinout, electrical characteristics, absolute maximum ratings.

Manufacturer

Microchip Technology

Category

EtherCAT Slave Controller

Package

64-pin QFN, 64-pin TQFP-EP

Key Specifications

ParameterValue
FMMUs3
DPRAM Size4K bytes
SyncManagers4
Ethernet Ports2 or 3
Ethernet Speed100Mbps
Host Interface8/16-Bit Host Bus Interface, SPI, Quad SPI
SPI Clock Rateup to 80 MHz
Supply Voltage3.3V
Digital I/O Pins16
Crystal Frequency25MHz
I/O Voltage Range1.8V to 3.3V
Operating Temperature RangeCommercial, Industrial, Extended Industrial (up to 105°C)

Overview

Part: LAN9252 Microchip

Type: 2/3-Port EtherCAT Slave Controller with Integrated Ethernet PHYs

Key Specs:

  • 2/3-port EtherCAT slave controller
  • 3 Fieldbus Memory Management Units (FMMUs)
  • 4 SyncManagers
  • 1.8V to 3.3V variable voltage I/O
  • Integrated 1.2V regulator
  • Integrated high-performance 100Mbps Ethernet transceivers
  • 4K bytes of DPRAM
  • 8/16-Bit Host Bus Interface
  • 25MHz crystal support

Features:

  • Integrated Ethernet PHYs with HP Auto-MDIX
  • Wake on LAN (WoL) support
  • Low power mode
  • Cable diagnostic support
  • Compliant with IEEE 802.3/802.3u (Fast Ethernet)
  • 100BASE-FX support via external fiber transceiver
  • Loop-back modes
  • Automatic polarity detection and correction
  • Distributed clock support
  • Indexed register or multiplexed bus host interface
  • SPI / Quad SPI support
  • Digital I/O Mode
  • 3rd port for flexible network configurations
  • Comprehensive power management features (3 power-down levels, Wake on link status change, Magic packet wakeup, wake on broadcast, wake on perfect DA, Wakeup indicator event signal)
  • Integrated power-on reset circuit
  • Latch-up performance exceeds 150mA per EIA/JESD78, Class II
  • JEDEC Class 3A ESD performance
  • Single 3.3V power supply
  • Multifunction GPIOs

Applications:

  • Motor Motion Control
  • Process/Factory Automation
  • Communication Modules, Interface Cards
  • Sensors
  • Hydraulic & Pneumatic Valve Systems
  • Operator Interfaces

Package:

  • 64-pin QFN
  • 64-pin TQFP-EP

Features

Offset:0008h-0009hSize:16 bits
BitsDescriptionECAT
Type
PDI
Type
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
15:12RESERVEDRORO
11Fixed FMMU/SyncManager Configuration
0: Variable configuration
1: Fixed configuration
RORO
10EtherCAT Read/Write Command Support
0: Supported
1: Not supported
RORO
9EtherCAT LRW Command Support
0: Supported
1: Not supported
RORO
8Enhanced DC SYNC Activation
0: Not available
1: Available
Note:
This feature refers to the Activation Register and Acti
vation Status Register
RORO
7Separate Handling of FCS Errors
0: Not supported
1: Supported, frame with wrong FCS and additional nibble will be
counted separately in Forwarded RX Counter
RORO
6Enhanced Link Detection MII
0: Not available
1: Available
RORO
5Enhanced Link Detection EBUS
0: Not available
1: Available
RORO
4Low Jitter EBUS
0: Not available, standard jitter
1: Available, jitter minimized
RORO
3Distributed Clocks (width)
0: 32-bit
1: 64-bit
RORO
2Distributed Clock
0: Not available
1: Available
RORO
1RESERVEDRORO
0FMMU Operation
0: Bit oriented
1: Byte oriented
RORO

Note: For EtherCAT Core CSR registers longer than one byte, the LSB has the lowest address and the MSB the highest address.

Applications

  • Motor Motion Control
  • Process/Factory Automation
  • Communication Modules, Interface Cards
  • Sensors
  • Hydraulic & Pneumatic Valve Systems
  • Operator Interfaces

Pin Configuration

I appreciate your request, but I must be transparent: no datasheet section has been provided in your message. The section header "3.0 PIN DESCRIPTIONS AND CONFIGURATION" is present, but the actual pin table content that would follow it is missing.

To extract an accurate pinout for the LAN9252 (64-pin QFN), I need:

  • The pin description table(s) from the datasheet
  • Pin numbers, names, types (I/O, power, ground, etc.)
  • Functional descriptions for each pin

Please provide the complete pin descriptions section from the LAN9252 datasheet, and I will extract a clean, structured pinout table immediately.

Electrical Characteristics

ParameterSymbol
Min
Typ
Max
UnitsNotes
ILVPECL Input Buffer
Low Input LevelVIL-VDD33TXRXxVDD33TXRXx+0.3-1.48VNote 21
High Input LevelVIH-VDD33TXRXx-1.140.3VNote 21
OLVPECL Output Buffer
Low Output LevelVOLVDD33TXRXx-1.62V
High Output LevelVOHVDD33TXRXx-1.025V
Peak-to-Peak Differential
(SFF mode)
VDIFF-SFF1.21.62.0V
Peak-to-Peak Differential
(SFP mode)
VDIFF-SFP0.60.81.0V
Common Mode VoltageVCM1.0VDD33TXRXx-1.3V
Offset VoltageVOFFSET40mVNote 22
Load CapacitanceCLOAD10pF

Absolute Maximum Ratings

  • Supply Voltage (VDD33TXRX1, VDD33TXRX2, VDD33BIAS, VDD33, VDDIO) (Note 1) 0 V to +3.6 V

  • Ethernet Magnetics Supply Voltage -0.5 V to +3.6 V

  • Positive voltage on input signal pins, with respect to ground (Note 2) VDDIO + 2.0 V

  • Negative voltage on input signal pins, with respect to ground (Note 3) -0.5 V

  • Positive voltage on OSCI, with respect to ground.+3.6 V

  • Storage Temperature-55°C to +150°C

  • Junction Temperature+150°C

  • Lead Temperature Range Refer to JEDEC Spec. J-STD-020

  • HBM ESD Performance JEDEC Class 3A

  • Note 1: When powering this device from laboratory or system power supplies, it is important that the absolute maximum ratings not be exceeded or device failure can result. Some power supplies exhibit voltage spikes on their outputs when AC power is switched on or off. In addition, voltage transients on the AC power line may appear on the DC output. If this possibility exists, it is suggested to use a clamp circuit.

  • Note 2: This rating does not apply to the following pins: OSCI, RBIAS

  • Note 3: This rating does not apply to the following pins: RBIAS

*Stresses exceeding those listed in this section could cause permanent damage to the device. This is a stress rating only. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Functional operation of the device at any condition exceeding those indicated in Section 18.2, "Operating Conditions\\", Section 18.5, "DC Specifications", or any other applicable section of this specification is not implied. Note, device signals are NOT 5 volt tolerant.

Thermal Information

ParameterSymbolValueUnitsComments
Thermal Resistance Junction to AmbientJA23.6°C/WMeasured in still air
Thermal Resistance Junction to Bottom of CaseJT0.1°C/WMeasured in still air
Thermal Resistance Junction to Top of CaseJC1.8°C/WAirflow 1 m/s

Related Variants

The following components are covered by the same datasheet.

Part NumberManufacturerPackage
LAN9252/MLMicrochip Technology
LAN9252TI/PTMicrochip Technology
Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.

Get structured datasheet data via API

Get started free