LAN9255/ZMX020 Microchip Integrated Circuit (Quad Flat Packages) In Stock
LAN9255/ZMX020 is a 3-port EtherCAT slave controller IC from Microchip in TQFP-128 package with 16-bit address and data bus, 25 MHz clock, and 12.5 MBps data transfer rate. Integrates EtherCAT protocol handling with multi-protocol host interface support including MMC, SD, QSPI, and USB. Designed for industrial real-time fieldbus networks and motion control systems. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Quad Flat Packages
- Pin Count
- 128
- Lifecycle
- ACTIVE
- Datasheet
- LAN9255/ZMX020 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $10.4400(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LAN9255/ZMX020?
- 3-port EtherCAT slave controller with 12.5 MBps data transfer rate and 25 MHz clock for real-time industrial fieldbus networks
- 16-bit address and data bus with MMC, SD, QSPI, and USB host interface compatibility for flexible microcontroller integration
- Boundary scan (JTAG) support simplifies board-level testing and debug of TQFP-128 in complex multi-chip industrial PCB assemblies
- EtherCAT SYNC protocol support enables deterministic sub-100 µs cycle-time synchronization in motion control and I/O applications
What is LAN9255/ZMX020 used for?
LAN9255/ZMX020 is designed for industrial automation equipment such as servo drives, robot joint controllers, and distributed I/O modules that require EtherCAT fieldbus connectivity with deterministic real-time cycle times below 100 µs. The device's 16-bit bus interface and multi-protocol support (MMC, SD, QSPI, USB) allow it to interface directly with embedded microcontrollers or FPGAs on industrial control boards without additional protocol bridge ICs. It is also used in CNC machine tool controllers and PLC communication modules where Ethernet-based fieldbus at 12.5 MBps throughput is required for high-speed coordinated motion control.
What are the specifications of LAN9255/ZMX020?
| Manufacturer Package Code | TQFP-128 |
| Factory Lead Time | 14Weeks |
| YTEOL | 23 |
| Address Bus Width | 16 |
| Boundary Scan | YES |
| Bus Compatibility | MMC; SD; QSPI; USB |
| Clock Frequency-Max | 25MHz |
| Communication Protocol | SYNC, BYTE; ETHERNET |
| Data Transfer Rate-Max | 12.5MBps |
| External Data Bus Width | 16 |
| JESD-30 Code | S-PQFP-G128 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of DMA Channels | 32 |
| Number of I/O Lines | 51 |
| Number of Serial I/Os | 12 |
| On Chip Data RAM Width | 8 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | QFP128,.63SQ,16 |
| Package Shape | SQUARE |
| Package Style | FLATPACK, HEAT SINK/SLUG, THIN PROFILE, FINE PITCH |
| RAM (words) | 262144 |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 3V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.4mm |
| Terminal Position | QUAD |
| uPs/uCs/Peripheral ICs Type | SERIAL IO/COMMUNICATION CONTROLLER, LAN |
| Package | Quad Flat Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.31.00.30 |
| Country of Origin | Taiwan |
Where can I find the LAN9255/ZMX020 datasheet?
LAN9255/ZMX020 Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for LAN9255/ZMX020?
Compatible alternatives and drop-in replacements for LAN9255/ZMX020:
Frequently Asked Questions
How does LAN9255/ZMX020's 12.5 MBps data transfer rate support real-time EtherCAT cycles in a multi-axis servo drive?
EtherCAT frames for a 10-axis servo system typically carry 100 to 200 bytes of process data per axis per cycle, totaling 1 to 2 kB per EtherCAT frame at 1 kHz cycle rates. At 12.5 MBps, LAN9255/ZMX020 can transfer a full 2 kB process-data frame in approximately 160 µs, well within standard EtherCAT cycle times of 250 µs to 1 ms. The 25 MHz clock maintains synchronization across the 3 EtherCAT ports, ensuring sub-100 µs latency from frame receipt to host data availability via the 16-bit bus interface, enabling deterministic position updates in multi-axis coordinated motion control.
For an industrial IoT gateway, how does LAN9255/ZMX020's multi-protocol bus compatibility reduce the host MCU interface design complexity?
LAN9255/ZMX020 supports MMC, SD, QSPI, and USB host interfaces on its 16-bit address bus, allowing it to connect directly to most industrial microcontrollers and SoCs without additional bus bridge ICs. A gateway design using a QSPI-capable MCU can interface LAN9255/ZMX020 at up to 25 MHz SPI clock, transferring EtherCAT process data from 3 fieldbus ports to the host at 12.5 MBps aggregate throughput. This eliminates the need for an FPGA or discrete bus converter between the MCU and the EtherCAT controller, reducing BOM cost and PCB layer count for compact industrial IoT gateway boards.
What is the significance of boundary scan (JTAG) support in LAN9255/ZMX020 for production testing of TQFP-128 assemblies?
The TQFP-128 package of LAN9255/ZMX020 has 128 pins at 0.4 mm pitch, making direct in-circuit test (ICT) probing of individual pins challenging without a bed-of-nails fixture. Boundary scan (JTAG) allows automatic interconnect testing of all 128 pins via a 4-wire JTAG chain, detecting open or shorted solder joints without physical probing of each pad. In production environments assembling industrial EtherCAT boards, JTAG boundary scan reduces test fixture cost by eliminating the need for 128-probe ICT fixtures, while achieving comparable fault coverage for shorts between adjacent 0.4 mm pitch TQFP pins.
When is LAN9255/ZMX020 a better EtherCAT slave choice than a software stack running on a bare microcontroller?
A software EtherCAT stack on a bare MCU requires the processor to handle frame parsing, process-data mapping, and sync pulse generation entirely in firmware, consuming significant CPU cycles and introducing jitter above 10 µs in cycle timing. LAN9255/ZMX020 offloads the full EtherCAT protocol engine to dedicated hardware, providing cycle-time jitter below 1 µs and freeing the host MCU to focus on application logic. For motion control applications requiring deterministic 250 µs to 500 µs cycle times across 3 EtherCAT ports with 16-bit process data at 12.5 MBps, the hardware slave controller consistently outperforms software-only approaches on general-purpose MCUs.
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| Qty. | Unit Price | Ext. Price |
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| 1+ | $14.9200 | $14.92 |
| 45+ | $14.4100 | $648.45 |
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| 90+ | $12.4300 | $1118.70 |
| 100+ | $11.3000 | $1130.00 |
| 1000+ | $10.4400 | $10440.00 |
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