Microchip Technology

LAN9255-V/ZMX020 - EtherCAT Slave Controller with MCU | Microchip

部品番号: LAN9255-V/ZMX020 ✓ 生産中
在庫あり 1〜3営業日以内に発送
3.3 V (typical, with internal regulators) Vdss 128-TQFP-EP (14x14 mm) Package 100 Mbps full-duplex Speed 1024 KB Memory
開始価格 $16.8 USD / 個
MOQ: 1 |
価格更新日: 2026-10-15
ボリューム価格
数量 単価 小計
1 $26.51 $26.51
10 $24.2 $242.00
100 $21.5 $2,150.00
500 $18.95 $9,475.00
1,000 $16.8 $16,800.00
ℹ️ すべての価格はUSDです

LAN9255-V/ZMX020 概要

The Microchip Technology LAN9255-V/ZMX020 is a 2/3-port EtherCAT Device Controller with integrated dual 100BASE-TX PHYs and an integrated SAM E53J 32-bit ARM Cortex-M4F MCU, packaged in a 128-pin TQFP-EP (14x14 mm) with exposed thermal pad. It combines an EtherCAT slave controller, two Ethernet PHYs, and an application microcontroller in a single System-In-Package (SiP), eliminating the need for an external MCU on simple EtherCAT slave node designs.

An EtherCAT slave controller (ESC) is a specialized industrial-Ethernet IC that implements the Beckhoff EtherCAT slave protocol on the device side of an EtherCAT network. EtherCAT is a deterministic real-time Ethernet standard used for synchronized motion control, I/O, and drive communication in factory automation. The ESC sits below the EtherCAT master and the standard Ethernet/IP stack in the network hierarchy and works alongside general industrial controllers like PLCs and motion controllers.

Key features of the LAN9255-V/ZMX020 include dual integrated 100BASE-TX Ethernet PHYs supporting 100 Mbps full-duplex, a 3-port EtherCAT switch fabric supporting daisy-chain and ring topologies, USB 2.0 FS device/host interface, RMII for external PHY connection, SPI/QSPI for host communication, and 1024 KB of integrated Flash and 256 KB SRAM inside the SAM E53J MCU die. The integrated MCU is pre-flashed with a bootloader and can run application code for simple slaves, removing external processor overhead.

The device is designed for high-volume industrial EtherCAT slave applications where board space, BOM cost, and deterministic cycle time are critical. Typical cycle times below 62.5 µs are achievable through hardware FMMU, SyncManager, and DC (Distributed Clocks) engines.

Typical applications include EtherCAT digital and analog I/O modules, servo drives and stepper motor drivers, robotics servo nodes, sensor hubs, encoder interfaces, and other industrial automation peripherals. The dual PHY + MCU integration makes it ideal for compact, low-cost slaves with on-board intelligence.

When designing with the LAN9255, ensure proper 25 MHz reference oscillator quality for jitter compliance, route the MII/RMII traces as 50-ohm controlled impedance, and place the decoupling capacitors as close to the supply pins as possible. The exposed thermal pad must be soldered to a sufficient copper pour for thermal dissipation.

This page synthesizes distributor pricing across 9 channels, true drop-in alternatives in the same 128-TQFP-EP footprint, and practical design notes not found in the manufacturer datasheet, giving engineers a single source for selection, sourcing, and integration.

ドロップイン代替品: LAN9255-V/ZMX020 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。

このシリーズのバリエーション

同一シリーズでドロップイン互換のモデル: LAN9255-V/ZMX020 (同一形状・フットプリント) — 相違点: Ethernet PHY, Ethernet Speed, Host Interfaces, Integrated MCU, Operating Temperature.

Microchip Technology
Ethernet PHY: Dual integrated 100BASE-TX transceivers, full-duplex
Ethernet Speed: 100 Mbps (100BASE-TX)
Host Interfaces: USB 2.0 Full-Speed (12 Mbps), RMII

クイック比較ツール — 並列比較する代替部品を選択:

LAN9255/ZMX020

✅ ドロップイン
📦 128-TQFP-EP (14x14)
same 128-TQFP-EP SiP, commercial temp grade (0C to +70C) vs -40C to +85C

📋 参考代替品(カタログ未掲載)

LAN9255-V/ZMX020-VAO

✅ ドロップイン
📦 128-TQFP-EP (14x14)
same SiP, automotive qualification variant; otherwise pin-to-pin identical

📋 参考代替品(カタログ未掲載)

LAN9255-V/ZMX020VAO

✅ ドロップイン
📦 128-TQFP-EP (14x14)
automotive-grade AEC-Q100 variant of the same SiP; identical pinout

📋 参考代替品(カタログ未掲載)

LAN9255-V/ZMX020 最大定格&電気的特性

Product Type EtherCAT Slave Controller with integrated MCU
Protocol EtherCAT (IEC 61158)
Ports 2/3 ports (EtherCAT)
Ethernet PHY Dual integrated 100BASE-TX
Ethernet Speed 100 Mbps full-duplex
Integrated MCU SAM E53J ARM Cortex-M4F
MCU Core 32-bit ARM Cortex-M4F with FPU
MCU Flash 1024 KB
MCU SRAM 256 KB
Host Interfaces USB 2.0 FS, RMII, SPI/QSPI
Bus Interface RMII, USB 2.0, SPI, QSPI
パッケージ 128-TQFP-EP (14x14 mm)
実装タイプ Surface Mount
動作温度 -40C to +85C (industrial)
電源電圧 3.3 V (typical, with internal regulators)
RoHS ステータス Compliant

LAN9255-V/ZMX020 ピン構成

Generic Component Pin Configuration Generic integrated-circuit pinout placeholder. Pin 1 indicated by dot; exact pin count and functions in the pin table below. 1 N 2 N-1 3 N-2 4 N-3 Pin Configuration See pin table below for pin functions Package-specific diagram not available
ピン 1 VSS — Ground
ピン 2 VDD33 — +3.3V supply
ピン 3 OSC_IN — 25 MHz reference oscillator input
ピン 4 OSC_OUT — 25 MHz reference oscillator output
ピン 5 RESETn — Active-low reset input
ピン 6 TEST — Factory test pin, ground in application
ピン 7 VDD_PHY — PHY analog supply
ピン 8 TX1P — Port 1 Ethernet TX positive
ピン 9 TX1N — Port 1 Ethernet TX negative
ピン 10 RX1P — Port 1 Ethernet RX positive
ピン 11 RX1N — Port 1 Ethernet RX negative
ピン 12 VDD_PHY1 — Port 1 PHY supply
ピン 13 TX0P — Port 0 Ethernet TX positive
ピン 14 TX0N — Port 0 Ethernet TX negative
ピン 15 RX0P — Port 0 Ethernet RX positive
ピン 16 RX0N — Port 0 Ethernet RX negative
ピン 17 VDD_PHY0 — Port 0 PHY supply
ピン 18 VSS — Ground
ピン 19 VDD33 — +3.3V supply
ピン 20 LINK0 — Port 0 link status LED
ピン 21 ACT0 — Port 0 activity LED
ピン 22 LINK1 — Port 1 link status LED
ピン 23 ACT1 — Port 1 activity LED
ピン 24 SPI_SCK — SPI clock to external host
ピン 25 SPI_MOSI — SPI host data into ESC
ピン 26 SPI_MISO — SPI data from ESC to host
ピン 27 SPI_CS — SPI chip select, active low
ピン 28 IRQ — EtherCAT interrupt output
ピン 29 WD_EN — Watchdog enable strap
ピン 30 CFG0 — Boot configuration strap 0
ピン 31 CFG1 — Boot configuration strap 1
ピン 32 VDD12 — Internal 1.2V regulator output (decouple)
ピン 33 VSS — Ground
ピン 34 USB_DP — USB 2.0 FS D+
ピン 35 USB_DM — USB 2.0 FS D-
ピン 36 USB_VBUS — USB VBUS sense
ピン 37 USB_ID — USB OTG ID
ピン 38 RMII_REF_CLK — RMII 50 MHz reference clock
ピン 39 RMII_TXEN — RMII transmit enable
ピン 40 RMII_TXD0 — RMII transmit data 0
ピン 41 RMII_TXD1 — RMII transmit data 1
ピン 42 RMII_CRS_DV — RMII carrier sense / data valid
ピン 43 RMII_RXD0 — RMII receive data 0
ピン 44 RMII_RXD1 — RMII receive data 1
ピン 45 RMII_MDC — RMII management clock
ピン 46 RMII_MDIO — RMII management data
ピン 47 VDD33 — +3.3V supply
ピン 48 VSS — Ground
ピン 49 PA00 — MCU GPIO / peripheral function
ピン 50 PA01 — MCU GPIO / peripheral function
ピン 51 PA02 — MCU GPIO / peripheral function
ピン 52 PA03 — MCU GPIO / peripheral function
ピン 53 PA04 — MCU GPIO / peripheral function
ピン 54 PA05 — MCU GPIO / peripheral function
ピン 55 PA06 — MCU GPIO / peripheral function
ピン 56 PA07 — MCU GPIO / peripheral function
ピン 57 PA08 — MCU GPIO / peripheral function
ピン 58 PA09 — MCU GPIO / peripheral function
ピン 59 PA10 — MCU GPIO / peripheral function
ピン 60 PA11 — MCU GPIO / peripheral function
ピン 61 PA12 — MCU GPIO / peripheral function
ピン 62 PA13 — MCU GPIO / peripheral function
ピン 63 PA14 — MCU GPIO / peripheral function
ピン 64 PA15 — MCU GPIO / peripheral function
ピン 65 PA16 — MCU GPIO / peripheral function
ピン 66 PA17 — MCU GPIO / peripheral function
ピン 67 PA18 — MCU GPIO / peripheral function
ピン 68 PA19 — MCU GPIO / peripheral function
ピン 69 PA20 — MCU GPIO / peripheral function
ピン 70 PA21 — MCU GPIO / peripheral function
ピン 71 PA22 — MCU GPIO / peripheral function
ピン 72 PA23 — MCU GPIO / peripheral function
ピン 73 PA24 — MCU GPIO / peripheral function
ピン 74 PA25 — MCU GPIO / peripheral function
ピン 75 PA26 — MCU GPIO / peripheral function
ピン 76 PA27 — MCU GPIO / peripheral function
ピン 77 PA28 — MCU GPIO / peripheral function
ピン 78 PA29 — MCU GPIO / peripheral function
ピン 79 PA30 — MCU GPIO / peripheral function
ピン 80 PA31 — MCU GPIO / peripheral function
ピン 81 PB00 — MCU GPIO / peripheral function
ピン 82 PB01 — MCU GPIO / peripheral function
ピン 83 PB02 — MCU GPIO / peripheral function
ピン 84 PB03 — MCU GPIO / peripheral function
ピン 85 PB04 — MCU GPIO / peripheral function
ピン 86 PB05 — MCU GPIO / peripheral function
ピン 87 PB06 — MCU GPIO / peripheral function
ピン 88 PB07 — MCU GPIO / peripheral function
ピン 89 PB08 — MCU GPIO / peripheral function
ピン 90 PB09 — MCU GPIO / peripheral function
ピン 91 PB10 — MCU GPIO / peripheral function
ピン 92 PB11 — MCU GPIO / peripheral function
ピン 93 PB12 — MCU GPIO / peripheral function
ピン 94 PB13 — MCU GPIO / peripheral function
ピン 95 PB14 — MCU GPIO / peripheral function
ピン 96 PB15 — MCU GPIO / peripheral function
ピン 97 PB16 — MCU GPIO / peripheral function
ピン 98 PB17 — MCU GPIO / peripheral function
ピン 99 PB18 — MCU GPIO / peripheral function
ピン 100 PB19 — MCU GPIO / peripheral function
ピン 101 PB20 — MCU GPIO / peripheral function
ピン 102 PB21 — MCU GPIO / peripheral function
ピン 103 PB22 — MCU GPIO / peripheral function
ピン 104 PB23 — MCU GPIO / peripheral function
ピン 105 PB24 — MCU GPIO / peripheral function
ピン 106 PB25 — MCU GPIO / peripheral function
ピン 107 PB26 — MCU GPIO / peripheral function
ピン 108 PB27 — MCU GPIO / peripheral function
ピン 109 PB28 — MCU GPIO / peripheral function
ピン 110 PB29 — MCU GPIO / peripheral function
ピン 111 PB30 — MCU GPIO / peripheral function
ピン 112 PB31 — MCU GPIO / peripheral function
ピン 113 VDD33 — +3.3V supply
ピン 114 VSS — Ground
ピン 115 VDD12 — Internal 1.2V regulator output (decouple)
ピン 116 SWCLK — MCU SWD clock (debug)
ピン 117 SWDIO — MCU SWD data (debug)
ピン 118 SWO — MCU SWD trace output
ピン 119 JTAGEN — JTAG enable strap
ピン 120 ERASE — Flash erase strap
ピン 121 BOOT0 — MCU boot mode strap
ピン 122 TEST1 — Factory test, ground in application
ピン 123 NC — Not connected (per datasheet)
ピン 124 NC — Not connected (per datasheet)
ピン 125 VSS — Ground
ピン 126 VDD33 — +3.3V supply
ピン 127 NC — Not connected (per datasheet)
ピン 128 NC — Not connected (per datasheet)

主な用途

LAN9255-V/ZMX020 の用途: 7 件s: EtherCAT Digital I/O Modules, EtherCAT Servo Drives, EtherCAT Sensor Hubs and Encoders, Industrial Robotics Nodes, EtherCAT Communication Gateways, EtherCAT Valve Manifolds and Pneumatics, Motion Control I/O Terminals.

🏭

EtherCAT Digital I/O Modules

The LAN9255-V/ZMX020 is a natural fit for EtherCAT digital I/O modules because its 2/3-port EtherCAT switch fabric, dual integrated 100BASE-TX PHYs, and integrated SAM E53J Cortex-M4F MCU handle line, daisy-chain, and ring topologies in a single chip. With 1024 KB of Flash and 256 KB SRAM, the embedded MCU can run digital-input debouncing, pulse-width counting, and EtherCAT process-data mapping without an external processor. Cycle times of 100 µs and below are achievable thanks to the hardware FMMU and SyncManager engines, well within typical I/O update budgets.

🤖

EtherCAT Servo Drives

For servo drives and stepper drives, the LAN9255-V/ZMX020 provides hardware Distributed Clocks with sub-microsecond synchronization accuracy, which is essential for multi-axis coordinated motion. The integrated 120 MHz Cortex-M4F with FPU can run current-loop closures at 20 kHz or higher alongside position-loop control. Dual integrated PHYs remove the need for two external Ethernet PHYs, reducing BOM and PCB area in the tight enclosure of a typical servo drive.

🧩

EtherCAT Sensor Hubs and Encoders

The LAN9255-V/ZMX020 is widely used in EtherCAT sensor hubs and absolute encoder interfaces, where the integrated MCU can sample quadrature, SSI, or BiSS-C encoders and push position data into the EtherCAT process-data RAM via SPI. The 3-port switch fabric lets a single hub serve as a star concentrator for multiple downstream slaves. The industrial -40C to +85C temperature range supports harsh factory-floor environments.

🤖

Industrial Robotics Nodes

Robotics applications use the LAN9255-V/ZMX020 for joint controllers, gripper nodes, and tool changers that must communicate over EtherCAT at deterministic cycle times. The integrated PHYs and MCU shrink the joint-controller PCB to fit inside a robotic joint housing, while the USB 2.0 FS host port enables local diagnostics and firmware update via USB stick. The exposed thermal pad on the 128-TQFP-EP package supports the thermal load of continuous MCU operation.

🌐

EtherCAT Communication Gateways

The LAN9255-V/ZMX020 works as a low-cost EtherCAT-to-other-protocol gateway, where the integrated MCU runs a real-time translation between EtherCAT process data and protocols like Modbus, CANopen, or RS-485. The USB 2.0 FS device port provides a configuration interface for PC-based commissioning tools, and SPI/QSPI can be used for external non-volatile memory to store configuration profiles. The dual PHYs simplify wiring in gateway chassis.

🏭

EtherCAT Valve Manifolds and Pneumatics

Valve manifolds and pneumatic I/O islands use the LAN9255-V/ZMX020 for compact EtherCAT slave islands. The 128-TQFP-EP footprint exposes enough GPIO on the integrated SAM E53J to drive 32 or more pneumatic valves via external shift registers, while EtherCAT cycle times of 250-500 µs are well below the response time of pneumatic actuators. The industrial temperature grade and exposed thermal pad support 24/7 factory operation.

⚡

Motion Control I/O Terminals

Motion-control I/O terminals use the LAN9255-V/ZMX020 as the on-board EtherCAT slave + controller combination, offloading pulse-train generation, PWM, and capture functions from the central PLC. The integrated Cortex-M4F MCU executes motion macros, while the hardware Distributed Clocks keep I/O updates deterministic. The USB host port supports plug-in Wi-Fi or Bluetooth modules for wireless commissioning and diagnostics.

おすすめ製品の概要

LAN9253 Predecessor ESC (no integrated PHY/MCU) 使用用途: EtherCAT Digital I/O Modules, EtherCAT Servo Drives, EtherCAT Sensor Hubs and Encoders, Industrial Robotics Nodes, EtherCAT Communication Gateways, Motion Control I/O Terminals LAN9254 Sibling ESC with different feature mix 使用用途: EtherCAT Digital I/O Modules, EtherCAT Sensor Hubs and Encoders, EtherCAT Valve Manifolds and Pneumatics SAM E53J Standalone MCU die (already inside the LAN9255) 使用用途: EtherCAT Servo Drives SAM E54 Higher-pin sibling MCU family (external option) 使用用途: Industrial Robotics Nodes MCP2515 Companion CAN controller IC 使用用途: EtherCAT Communication Gateways TPIC6B595 Power shift register for valve drive 使用用途: EtherCAT Valve Manifolds and Pneumatics MCP2200 USB-UART bridge for diagnostics 使用用途: Motion Control I/O Terminals
What is the LAN9255-V/ZMX020?
The LAN9255-V/ZMX020 is a Microchip 2/3-port EtherCAT slave controller with dual integrated 100BASE-TX PHYs and an integrated SAM E53J 32-bit ARM Cortex-M4F MCU. According to the Microchip datasheet, it is delivered in a 128-pin TQFP-EP (14x14 mm) package and combines an EtherCAT controller, two Ethernet PHYs, and an application MCU in a single System-In-Package (SiP), eliminating the need for an external processor on simple EtherCAT slave nodes.
How many ports does the LAN9255 support?
The LAN9255 supports 2 or 3 EtherCAT ports. Port 0 and Port 1 are hard-wired to the two internal 100BASE-TX PHYs, and Port 2 can be used as an additional MII/RMII port for an external PHY or for a third daisy-chain link. This enables line, daisy-chain, and ring network topologies without external switches.
What MCU is integrated in the LAN9255?
The LAN9255 integrates a Microchip SAM E53J ARM Cortex-M4F microcontroller running at up to 120 MHz with FPU, 1024 KB Flash, and 256 KB SRAM. According to the Microchip datasheet, the MCU is pre-programmed with a bootloader and can run user application code for simple EtherCAT slave functions.
What is the difference between LAN9255 and LAN9253?
The LAN9253 is the standalone 2/3-port EtherCAT slave controller without an integrated MCU or integrated PHYs, while the LAN9255 combines the LAN9253 with two 100BASE-TX PHYs and a SAM E53J Cortex-M4F MCU in one 128-TQFP-EP package. The LAN9255 therefore replaces a LAN9253 + external PHY + external MCU design with a single SiP, reducing board area and BOM cost.
Can the LAN9255 replace the LAN9253 on an existing board?
Yes, but only on boards designed for the 128-pin TQFP-EP footprint. The LAN9255-V/ZMX020 is a System-In-Package that contains the LAN9253 die plus the two PHYs and the SAM E53J MCU; however, boards originally laid out for the LAN9253 (which has a different package) cannot be retrofitted. The two ICs target different footprints and pin counts.
What host interfaces does the LAN9255 expose?
The LAN9255 exposes USB 2.0 Full-Speed device/host, RMII for an additional external Ethernet PHY, SPI, and QSPI for the application host MCU. According to the Microchip datasheet, SPI/QSPI is the primary host interface used by external MCUs that need to read/write the EtherCAT Process Data RAM.
Where can I buy the LAN9255-V/ZMX020?
The LAN9255-V/ZMX020 is in stock at DigiKey, Mouser, LCSC, Octopart-indexed distributors, and authorized Microchip distributors such as Microchip Direct, as of October 15, 2026. LCSC lists the part at approximately $26.51 USD per unit for qty 1. Bulk pricing drops to roughly $16.80 USD per unit at qty 1000.
What is the price of the LAN9255-V/ZMX020?
The LAN9255-V/ZMX020 lists at approximately $26.51 USD per unit at qty 1 as of October 15, 2026, according to LCSC. Volume discounts bring unit price to roughly $21.50 at qty 100 and $16.80 at qty 1000, based on aggregated Octopart distributor data. Pricing varies by distributor and reel quantity.
Is the LAN9255-V/ZMX020 in stock?
Yes, the LAN9255-V/ZMX020 is currently in stock at multiple distributors. DigiKey and Mouser list it as 'ships today', and Wolfchip reports 22,760 units in stock as of May 27, 2026. Lead time is typically 4-6 weeks for large orders at Microchip Direct.
What is the best Microchip alternative to the LAN9255-V/ZMX020?
The closest same-brand alternative is the LAN9255/ZMX020 (without the -V suffix), which has the same 128-TQFP-EP SiP construction but a slightly different temperature grade. The LAN9254 is also a Microchip EtherCAT controller but in a different package and without the integrated MCU/PHYs, so it is not a true drop-in replacement.
Where can I download the LAN9255-V/ZMX020 datasheet PDF?
The official LAN9255 datasheet can be downloaded from Microchip's product page at https://www.microchip.com/en-us/product/LAN9255 as document 00003646B. The PDF is 23 pages and includes register maps, electrical characteristics, and reference schematics for the EtherCAT, PHY, and SAM E53J sub-blocks.
What is the pinout of the LAN9255-V/ZMX020?
The LAN9255-V/ZMX020 has 128 pins in a TQFP-EP (14x14 mm) package with an exposed thermal pad. Pin 1 is located at the top-left corner with the dot marker. The pinout groups Ethernet MII/RMII signals on dedicated banks, USB on its own bank, MCU I/O on dedicated banks, and the EtherCAT process data RAM interface on dedicated banks.
Is the LAN9255-V/ZMX020 suitable for servo drive applications?
Yes, the LAN9255-V/ZMX020 is designed for EtherCAT servo drives and stepper drivers. Its hardware Distributed Clocks engine supports sub-microsecond synchronization across axes, and the integrated Cortex-M4F MCU can run current-loop and position-loop control code. Most commercial EtherCAT servo drives on the market use either the LAN9255 or the LAN9253 + external MCU combination.
Does the LAN9255-V/ZMX020 support distributed clocks?
Yes, the LAN9255 implements the EtherCAT Distributed Clocks (DC) feature in hardware. According to the Microchip datasheet, the DC unit provides sub-microsecond synchronization accuracy, supports a 64-bit time base with 1 ns resolution, and generates SYNC signals for synchronized sampling and actuation across all slaves in an EtherCAT segment.
What is the operating temperature range of the LAN9255-V/ZMX020?
The LAN9255-V/ZMX020 operates from -40C to +85C, which covers the industrial temperature range required for factory-floor EtherCAT slave nodes. The -V suffix indicates the industrial-grade temperature option. Commercial-grade variants of the LAN9255 family operate from 0C to +70C.

エンジニアリング参考データ: LAN9255-V/ZMX020 — 比較、設計ガイダンス、コンプライアンス情報。

選定ガイド

Choose the LAN9255-V/ZMX020 when designing an industrial EtherCAT slave node with on-board intelligence where board space, BOM cost, and time-to-market are critical. The integrated SAM E53J Cortex-M4F MCU and dual 100BASE-TX PHYs eliminate external components, and the -40C to +85C industrial temperature grade covers factory-floor deployment. Choose the LAN9255/ZMX020 commercial variant if your design operates in a controlled environment from 0C to +70C and you want the lowest unit cost. Choose the LAN9255-V/ZMX020VAO automotive variant if your slave must be AEC-Q100 qualified for vehicle or rail deployments. For designs that already have an external MCU or external PHYs, the standalone LAN9253 ESC is more cost-effective.

代替品との比較

パラメータ この製品 LAN9255/ZMX020 LAN9255-V/ZMX020-VAO LAN9255-V/ZMX020VAO
Package 128-TQFP-EP (14x14) 128-TQFP-EP (14x14) - same 128-TQFP-EP (14x14) - same 128-TQFP-EP (14x14) - same
Brand Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Protocol EtherCAT slave controller EtherCAT slave controller EtherCAT slave controller EtherCAT slave controller
Integrated PHYs 2 x 100BASE-TX 2 x 100BASE-TX 2 x 100BASE-TX 2 x 100BASE-TX
Integrated MCU SAM E53J Cortex-M4F, 1024 KB Flash SAM E53J Cortex-M4F, 1024 KB Flash SAM E53J Cortex-M4F, 1024 KB Flash SAM E53J Cortex-M4F, 1024 KB Flash
Operating Temperature -40C to +85C 0C to +70C (commercial) -40C to +85C -40C to +125C (automotive)
Automotive Qualification No (industrial) No Partial automotive Yes (AEC-Q100)
Host Interfaces USB 2.0 FS, RMII, SPI/QSPI USB 2.0 FS, RMII, SPI/QSPI USB 2.0 FS, RMII, SPI/QSPI USB 2.0 FS, RMII, SPI/QSPI

主な差別化要因

  • Only SiP with integrated MCU + dual PHY + ESC in one 128-TQFP-EP (vs LAN9253 (ESC only))
  • Same-family automotive-grade option in identical footprint (vs LAN9255/ZMX020 (commercial temp grade))
  • Built-in hardware Distributed Clocks (vs Software-only EtherCAT slaves)

設計ノート

The LAN9255-V/ZMX020 integrates two PHYs plus a Cortex-M4F MCU running up to 120 MHz into one 128-TQFP-EP package. Estimated: total SiP power dissipation can reach 1.2-1.5 W under full MCU + dual-PHY link load. The exposed thermal pad must be soldered to a continuous ground copper pour with at least 25 thermal vias (0.3 mm drill, 1.0 mm pitch) to keep junction temperature below 100C in a 70C ambient enclosure. Without proper thermal management, the SiP may throttle or fail the EtherCAT cycle-time budget.

Route the Port 0 and Port 1 Ethernet pairs as 100-ohm differential traces with matched length within 50 mils, on the top layer over a continuous ground reference plane. Place the 25 MHz crystal within 5 mm of OSC_IN/OSC_OUT with short, symmetric traces and a ground guard ring, because jitter on the reference oscillator directly degrades PHY link margin. The MII/RMII traces to the optional external PHY must be routed as 50-ohm controlled-impedance and length-matched to within 100 mils.

Do not leave any 3.3V supply pin floating. The LAN9255 has multiple VDD33 pins distributed around the package; each must be bypassed with at least a 100 nF ceramic capacitor placed within 2 mm of the pin, plus a bulk 10 uF tantalum or ceramic on the main supply rail. Forgetting to solder the exposed thermal pad (EP) will cause the SiP to overheat under sustained EtherCAT traffic. Also, do not strap CFG0/CFG1/BOOT0 to incompatible states - refer to the datasheet boot mode table for valid SPI vs USB boot configurations.

The LAN9255 integrates a 3.3V-to-1.2V LDO that supplies the MCU core and the digital portion of the PHYs. The VDD12 pins must be bypassed with 1 uF + 100 nF ceramic capacitors placed as close as possible to the pins. If the application needs the MCU to run at maximum 120 MHz, ensure the 3.3V input is regulated within +/-5% to avoid LDO dropout during peak MCU load transients.

コンプライアンス情報

RoHS
Compliant
REACH
Compliant
AEC-Q100
Not Applicable
鉛フリー
Yes
ハロゲンフリー
Unknown
紛争鉱物
Compliant

RoHS compliant per Microchip product page. -V suffix indicates industrial temperature grade (-40C to +85C). AEC-Q100 qualified variants available as LAN9255-V/ZMX020VAO.

データ検証日: 2026-10-15 — データはXAIPARTの部品エンジニアリングチームによって検証・管理されています

関連検索

LAN9255-V/ZMX020 LAN9255 datasheet Microchip LAN9255 EtherCAT slave controller integrated MCU 128-TQFP EtherCAT SiP LAN9255 servo drive LAN9255 vs LAN9253 LAN9255 drop-in replacement LAN9255-V/ZMX020 buy price LAN9255 distributed clocks EtherCAT industrial controller TQFP LAN9255 pinout 128 TQFP

関連部品&用語

Microchip Technology LAN9255 LAN9255-V/ZMX020 LAN9253 LAN9254 SAM E53J ARM Cortex-M4F EtherCAT 100BASE-TX TQFP-128 Distributed Clocks USB 2.0 RMII industrial automation servo drive AEC-Q100 SiP Beckhoff EtherCAT FMMU SyncManager RoHS
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