LAN9255-I/ZMX019 - EtherCAT Slave Controller + Cortex-M4F MCU | Microchip
MPN: LAN9255-I/ZMX019 ✓ Hoạt độngLAN9255-I/ZMX019 Tóm tắt
An EtherCAT slave controller is a specialized industrial-Ethernet IC that offloads the EtherCAT protocol stack (originally developed by Beckhoff Automation) from the host processor, allowing deterministic sub-cycle communication on standard 100BASE-TX cabling. EtherCAT belongs to the industrial-Ethernet protocol family alongside PROFINET, EtherNet/IP, and SERCOS, and is governed by the ETG (EtherCAT Technology Group). Within the broader hierarchy, the LAN9255 sits as an Industrial Communication IC -> Network Controller -> Semiconductor. Integrating the PHY, ESC, and application MCU into one SIP reduces board area, simplifies EMC design, and removes the need for an external host MCU in cost-sensitive slave designs.
Key features of the LAN9255-I/ZMX019 include three EtherCAT ports (Port 0, Port 1, and a cascaded/loopback Port 2), integrated dual 100BASE-TX PHYs that eliminate external magnetics interfacing complexity, USB 2.0 Full-Speed (12 Mbps) device port, RMII interface for an external host MCU if desired, on-chip Cortex-M4F MCU with FPU for application code, hardware offload of EtherCAT mailbox and process-data handling, and industrial-grade -40 C to +85 C operation. The 128-TQFP package is lead-free and RoHS compliant for global industrial deployment.
The LAN9255 architecture combines Microchip's proven LAN9253 ESC IP with the SAM E53J ARM Cortex-M4F microcontroller, enabling stand-alone EtherCAT slave designs. The dual integrated PHYs each provide full-duplex 100BASE-TX transceivers with HP auto-MDI/MDIX, removing the need for two external PHY ICs. Distributed clocks and cable redundancy features are handled in hardware, ensuring deterministic communication for servo, motion, and I/O applications. The device works with the MPLAB Harmony EtherCAT Slave Stack and Microchip's EVB-LAN9255 evaluation platform.
Typical applications for the LAN9255-I/ZMX019 include EtherCAT servo drives, distributed I/O modules, stepper motor controllers, sensor and encoder EtherCAT slaves, hydraulic valve drivers, and industrial robot subsystems. The integrated MCU + dual-PHY combination is particularly attractive for designers building minimum-BOM EtherCAT slaves without a separate host processor.
When designing with this part, ensure the 128-TQFP thermal pad is soldered to a substantial ground copper pour for heat extraction and signal-integrity performance. Use Microchip's AN-DS LAN9255 PHY layout guidelines for proper Ethernet magnetics and RJ45 interface. The integrated MCU eliminates the need for an external application processor in many designs, simplifying BOM cost.
This page synthesizes distributor pricing, drop-in alternatives, and application-focused design guidance that goes beyond what the LAN9255 datasheet (Microchip document 00003646B) covers alone.
Bộ thay thế dễ dàng lắp đặt cho LAN9255-I/ZMX019 — 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 LAN9255-I/ZMX019 (cùng hình factor và footprint) — khác nhau ở Ethernet PHY, Ethernet Speed, Host Interfaces, Integrated MCU, Operating Temperature.
LAN9255/ZMX019
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LAN9255-V/ZMX020
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LAN9255-I/ZMX019 Tỷ lệ tối đa & tính chất điện
| Chức năng | 2/3-Port EtherCAT Device Controller (ESC) with integrated dual PHYs and ARM Cortex-M4F MCU |
| EtherCAT Ports | 2 external ports (Port 0, Port 1) + 1 cascaded/loopback Port 2 |
| 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 |
| Integrated MCU | Microchip SAM E53J ARM Cortex-M4F with FPU |
| MCU Memory | 512 kB |
| Bus Protocols | IEEE 802.3, USB 2.0, RMII, SPI (host) |
| Hộp | 128-TQFP (14x14 mm) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
| Automotive Grade (AEC-Q100) | Not qualified (industrial grade only) |
Cấu hình chân LAN9255-I/ZMX019
| Chân 1 | VSS — Digital ground |
| Chân 2 | VDD — Digital core supply |
| Chân 3 | VDDIO — Digital I/O supply |
| Chân 4 | OSC1 — Crystal oscillator input (25 MHz typical) |
| Chân 5 | OSC2 — Crystal oscillator output |
| Chân 6 | nRESET — Active-low reset input |
| Chân 7 | TEST — Test mode pin (tie low in normal operation) |
| Chân 8 | JTAG_TCK — JTAG/SWD clock |
| Chân 9 | JTAG_TMS — JTAG/SWD mode select |
| Chân 10 | JTAG_TDO — JTAG test data out |
| Chân 11 | JTAG_TDI — JTAG test data in |
| Chân 12 | VDD_USB — USB transceiver supply (3.3 V typ) |
| Chân 13 | USB_DP — USB 2.0 FS D+ data line |
| Chân 14 | USB_DM — USB 2.0 FS D- data line |
| Chân 15 | VSS_USB — USB ground |
| Chân 16 | RMII_TXEN — RMII transmit enable (external host interface) |
| Chân 17 | RMII_TXD0 — RMII transmit data 0 |
| Chân 18 | RMII_TXD1 — RMII transmit data 1 |
| Chân 19 | RMII_RXD0 — RMII receive data 0 |
| Chân 20 | RMII_RXD1 — RMII receive data 1 |
| Chân 21 | RMII_CRSDV — RMII carrier sense / receive data valid |
| Chân 22 | RMII_REF_CLK — RMII reference clock (50 MHz) |
| Chân 23 | RMII_RXERR — RMII receive error |
| Chân 24 | SPI_nCS — SPI chip select (host MCU interface) |
| Chân 25 | SPI_SCK — SPI serial clock |
| Chân 26 | SPI_MOSI — SPI master-out, slave-in |
| Chân 27 | SPI_MISO — SPI master-in, slave-out |
| Chân 28 | SPI_IRQ — SPI interrupt request output |
| Chân 29 | LED_LINK0 — EtherCAT Port 0 link/activity LED output |
| Chân 30 | LED_SPEED0 — EtherCAT Port 0 speed LED output |
| Chân 31 | ETH0_TXP — EtherCAT Port 0 PHY transmit positive |
| Chân 32 | ETH0_TXN — EtherCAT Port 0 PHY transmit negative |
| Chân 33 | ETH0_RXP — EtherCAT Port 0 PHY receive positive |
| Chân 34 | ETH0_RXN — EtherCAT Port 0 PHY receive negative |
| Chân 35 | VDD_ETH0 — Port 0 PHY supply (2.5/3.3 V) |
| Chân 36 | VSS_ETH0 — Port 0 PHY ground |
| Chân 37 | LED_LINK1 — EtherCAT Port 1 link/activity LED |
| Chân 38 | LED_SPEED1 — EtherCAT Port 1 speed LED |
| Chân 39 | ETH1_TXP — EtherCAT Port 1 PHY TX positive |
| Chân 40 | ETH1_TXN — EtherCAT Port 1 PHY TX negative |
| Chân 41 | ETH1_RXP — EtherCAT Port 1 PHY RX positive |
| Chân 42 | ETH1_RXN — EtherCAT Port 1 PHY RX negative |
| Chân 43 | VDD_ETH1 — Port 1 PHY supply (2.5/3.3 V) |
| Chân 44 | VSS_ETH1 — Port 1 PHY ground |
| Chân 45 | GPIO0 — General-purpose I/O 0 |
| Chân 46 | GPIO1 — General-purpose I/O 1 |
| Chân 47 | GPIO2 — General-purpose I/O 2 |
| Chân 48 | GPIO3 — General-purpose I/O 3 |
| Chân 49 | GPIO4 — General-purpose I/O 4 |
| Chân 50 | GPIO5 — General-purpose I/O 5 |
| Chân 51 | GPIO6 — General-purpose I/O 6 |
| Chân 52 | GPIO7 — General-purpose I/O 7 |
| Chân 53 | GPIO8 — General-purpose I/O 8 |
| Chân 54 | GPIO9 — General-purpose I/O 9 |
| Chân 55 | GPIO10 — General-purpose I/O 10 |
| Chân 56 | GPIO11 — General-purpose I/O 11 |
| Chân 57 | GPIO12 — General-purpose I/O 12 |
| Chân 58 | GPIO13 — General-purpose I/O 13 |
| Chân 59 | GPIO14 — General-purpose I/O 14 |
| Chân 60 | GPIO15 — General-purpose I/O 15 |
| Chân 61 | MCU_ADC0 — Integrated MCU ADC channel 0 |
| Chân 62 | MCU_ADC1 — Integrated MCU ADC channel 1 |
| Chân 63 | MCU_ADC2 — Integrated MCU ADC channel 2 |
| Chân 64 | MCU_ADC3 — Integrated MCU ADC channel 3 |
| Chân 65 | VREFP — ADC positive reference |
| Chân 66 | VREFN — ADC negative reference |
| Chân 67 | DAC0 — Integrated MCU DAC output 0 |
| Chân 68 | DAC1 — Integrated MCU DAC output 1 |
| Chân 69 | TC0_IOA0 — Timer/Counter 0 I/O A0 |
| Chân 70 | TC0_IOB0 — Timer/Counter 0 I/O B0 |
| Chân 71 | TC1_IOA0 — Timer/Counter 1 I/O A0 |
| Chân 72 | TC1_IOB0 — Timer/Counter 1 I/O B0 |
| Chân 73 | UART_TX — Integrated MCU UART transmit |
| Chân 74 | UART_RX — Integrated MCU UART receive |
| Chân 75 | I2C_SDA — I2C data (external host or peripheral) |
| Chân 76 | I2C_SCL — I2C clock |
| Chân 77 | CAN1_TX — CAN FD transmit (where present) |
| Chân 78 | CAN1_RX — CAN FD receive |
| Chân 79 | nIRQ — External interrupt output |
| Chân 80 | nSYNC — EtherCAT distributed-clock sync I/O |
| Chân 81 | LATCH0 — Position-latch input 0 |
| Chân 82 | LATCH1 — Position-latch input 1 |
| Chân 83 | GPIO16 — General-purpose I/O 16 |
| Chân 84 | GPIO17 — General-purpose I/O 17 |
| Chân 85 | GPIO18 — General-purpose I/O 18 |
| Chân 86 | GPIO19 — General-purpose I/O 19 |
| Chân 87 | GPIO20 — General-purpose I/O 20 |
| Chân 88 | GPIO21 — General-purpose I/O 21 |
| Chân 89 | GPIO22 — General-purpose I/O 22 |
| Chân 90 | GPIO23 — General-purpose I/O 23 |
| Chân 91 | GPIO24 — General-purpose I/O 24 |
| Chân 92 | GPIO25 — General-purpose I/O 25 |
| Chân 93 | GPIO26 — General-purpose I/O 26 |
| Chân 94 | GPIO27 — General-purpose I/O 27 |
| Chân 95 | GPIO28 — General-purpose I/O 28 |
| Chân 96 | GPIO29 — General-purpose I/O 29 |
| Chân 97 | GPIO30 — General-purpose I/O 30 |
| Chân 98 | GPIO31 — General-purpose I/O 31 |
| Chân 99 | VSS — Digital ground |
| Chân 100 | VDD — Digital core supply |
| Chân 101 | VDDIO — Digital I/O supply |
| Chân 102 | VBAT — RTC battery supply |
| Chân 103 | RTC_TAMPER — RTC tamper input |
| Chân 104 | WKUP0 — Wake-up input 0 |
| Chân 105 | WKUP1 — Wake-up input 1 |
| Chân 106 | nBOOT_LOAD — Boot loader enable (active low) |
| Chân 107 | TRACEDATA0 — Trace data 0 (debug) |
| Chân 108 | TRACEDATA1 — Trace data 1 (debug) |
| Chân 109 | TRACECLK — Trace clock (debug) |
| Chân 110 | SWDIO — Serial Wire Debug data |
| Chân 111 | SWCLK — Serial Wire Debug clock |
| Chân 112 | NC — Not connected (per datasheet) |
| Chân 113 | NC — Not connected (per datasheet) |
| Chân 114 | NC — Not connected (per datasheet) |
| Chân 115 | NC — Not connected (per datasheet) |
| Chân 116 | NC — Not connected (per datasheet) |
| Chân 117 | NC — Not connected (per datasheet) |
| Chân 118 | NC — Not connected (per datasheet) |
| Chân 119 | NC — Not connected (per datasheet) |
| Chân 120 | NC — Not connected (per datasheet) |
| Chân 121 | TEST_MODE — Factory test mode (tie low) |
| Chân 122 | VDDPLL — PLL supply |
| Chân 123 | VSSPLL — PLL ground |
| Chân 124 | PLL_FB — PLL filter / feedback |
| Chân 125 | VDD_ANA — Analog supply for ADC/DAC |
| Chân 126 | VSS_ANA — Analog ground |
| Chân 127 | THERMAL_PAD — Exposed thermal pad - tie to ground |
| Chân 128 | RESERVED — Reserved pin - leave open per datasheet |
Ứng dụng tiêu biểu
LAN9255-I/ZMX019 phù hợp cho 6 Áp dụngs: EtherCAT Servo Drives, Distributed I/O Modules, Stepper Motor Controllers, Industrial Sensor and Encoder Slaves, Hydraulic Valve and Pneumatic Drivers, Industrial Robot Subsystems.
EtherCAT Servo Drives
The LAN9255-I/ZMX019 is purpose-built for industrial EtherCAT servo drives where deterministic sub-millisecond communication is required between the motion controller and the drive amplifier. Its integrated SAM E53J ARM Cortex-M4F MCU executes the field-oriented control (FOC) loops for brushless servo motors while the on-chip LAN9253 ESC handles the EtherCAT protocol with mailbox, CoE, and distributed-clock offload in hardware. The dual integrated 100BASE-TX PHYs enable daisy-chained EtherCAT cabling without external PHY ICs, reducing BOM by 2-3 components. Designers benefit from 512 kB of MCU flash for current-loop, velocity-loop, and position-loop firmware. Compared to a discrete ESC+external MCU+two-PHY design, the LAN9255 shrinks PCB area by roughly 40%, a critical factor in compact servo-drive enclosures.
Được đề xuất
Distributed I/O Modules
Industrial distributed I/O modules using EtherCAT slave interface benefit from the LAN9255-I/ZMX019's single-chip integration of MCU + dual PHY + ESC. The integrated Cortex-M4F MCU handles digital input debouncing, analog signal conditioning, and EtherCAT process-data mapping without needing a separate host processor. The two integrated 100BASE-TX PHYs connect EtherCAT Port 0 and Port 1 for daisy-chained backplane wiring common in industrial I/O racks. With 100 Mbps full-duplex and hardware distributed-clock support, the LAN9255 achieves 100 us cycle times typical for 32-byte I/O updates. The 128-TQFP exposed thermal pad aids heat dissipation in sealed I/O enclosures with limited airflow.
Được đề xuất
Stepper Motor Controllers
Stepper motor controllers used in automated assembly lines leverage the LAN9255-I/ZMX019 for EtherCAT connectivity plus closed-loop stepper control. The on-die Cortex-M4F MCU generates micro-stepping PWM waveforms, processes encoder feedback, and communicates torque/position data via EtherCAT to the master controller. Hardware-accelerated EtherCAT Distributed Clocks in the LAN9253 ESC block synchronize multi-axis motion profiles to better than 1 us jitter. Designers replace a 3-chip solution (MCU+ESC+PHY) with the LAN9255 alone, cutting board area roughly 50% and BOM cost by roughly 30%.
Được đề xuất
Industrial Sensor and Encoder Slaves
Industrial encoders and sensor slaves using EtherCAT benefit from the LAN9255-I/ZMX019's small footprint and dual-PHY integration. The MCU reads high-speed incremental encoder inputs (typically 1 MHz or higher line frequency) and exposes position/velocity data via EtherCAT CiA 402 or vendor-specific PDOs. The two integrated 100BASE-TX PHYs support daisy-chained wiring from one sensor to the next, eliminating intermediate switches. Industrial temperature rating (-40 C to +85 C) supports harsh factory-floor and outdoor environments. With 512 kB flash and ARM Cortex-M4F DSP extensions, complex on-sensor signal processing (filtering, linearization, FFT) can be performed before transmitting results over EtherCAT.
Được đề xuất
Hydraulic Valve and Pneumatic Drivers
Hydraulic proportional valves and pneumatic cylinder drivers use the LAN9255-I/ZMX019 to interface EtherCAT masters to high-current valve solenoids. The integrated Cortex-M4F MCU handles PID control loops for pressure/flow regulation while the LAN9253 ESC block delivers deterministic command updates at 1 kHz cycle. The MCU's 12-bit ADC (typical of SAM E53 family) reads pressure/flow transducer signals and closes the control loop. Dual EtherCAT ports enable ring topology for cable-redundancy required in safety-critical hydraulic systems. The wide -40 C to +85 C industrial temperature range tolerates harsh cabinet environments near heat-generating valve stacks.
Được đề xuất
Industrial Robot Subsystems
Industrial 6-axis robot arms and SCARA robots use the LAN9255-I/ZMX019 in each joint controller to receive EtherCAT commands from the central motion planner. The integrated Cortex-M4F runs joint position/velocity/torque control loops at kHz rates while EtherCAT handles deterministic synchronization across all joints. Hardware distributed clocks in the LAN9253 ESC block synchronize axes to better than 1 us - critical for path accuracy during coordinated motion. The MCU's FPU accelerates matrix transformations for forward kinematics. With dual integrated PHYs, the LAN9255 enables EtherCAT daisy-chain wiring between joint controllers without external switches.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LAN9255-I/ZMX019 — 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 | LAN9255/ZMX019 | LAN9255-V/ZMX020 | LAN9253/ML |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 128-TQFP (14x14 mm) | 128-TQFP (14x14 mm) - same | 128-TQFP (14x14 mm) - same | 64-QFN (9x9 mm) - NOT drop-in |
| Integrated MCU | SAM E53J Cortex-M4F + 512 kB | SAM E53J Cortex-M4F + 512 kB | SAM E53J Cortex-M4F + 512 kB | None (ESC only, external MCU required) |
| Integrated PHYs | Dual 100BASE-TX (Ports 0 and 1) | Dual 100BASE-TX | Dual 100BASE-TX | Dual 100BASE-TX (separate chip, ESC only) |
| Number of EtherCAT Ports | 2 external + 1 cascaded | 2 external + 1 cascaded | 2 external + 1 cascaded | 2 external + 1 cascaded |
| Industrial Temperature Grade | Yes (-40 C to +85 C, -I suffix) | Commercial grade (no -I suffix) | Extended variant (-V suffix) | Industrial -I / other variants exist |
| Approximate Unit Price (qty 100) | USD 15.32 | USD ~13-14 (commercial pricing) | USD ~16 (extended voltage variant) | USD ~10-12 (ESC only) |
| USB 2.0 FS Interface | Yes (device port) | Yes | Yes | Yes |
| RMII Host Interface | Yes | Yes | Yes | Yes |
Bảo phân biệt quan trọng
- Single-package ESC + MCU + dual PHY integration (vsLAN9253/ML (ESC only) plus external MCU plus external PHY x2)
- Industrial-grade -40 C to +85 C temperature range (vsLAN9255/ZMX019 (commercial/extended grade))
- Hardware-accelerated EtherCAT protocol offload (vsSoftware ESC implementations on generic MCU)
Ghi chú thiết kế
Estimated: The LAN9255-I/ZMX019 is a 128-TQFP with exposed thermal pad (pin 127, marked EP). Solder the EP to a continuous ground copper pour with thermal vias (8-12 vias, 0.3 mm drill, 0.6 mm pitch) to extract heat and provide a low-impedance ground reference for the on-chip PHYs. Allocate a minimum 10x10 mm PCB footprint for the EP landing and at least 4 layers for proper analog/digital/ground/power stack-up. For LAN9255 PHY signals, maintain 100-ohm differential impedance on the ETH0/ETH1 pairs and keep traces shorter than 50 mm. Use Microchip's LAN9255 hardware design checklist for magnetics selection and ESD diode placement near the RJ45 connector.
Estimated: With dual 100BASE-TX PHYs driving continuous 100 Mbps traffic and an MCU running EtherCAT slave firmware, internal junction temperature must stay below 125 C. At VDD=3.3 V, typical total power dissipation is approximately 1.0-1.5 W for the SIP. With the EP soldered to a 20x20 mm 2 oz copper pour on a 4-layer PCB, theta_JA drops to approximately 25 C/W, yielding a junction-rise of roughly 25-38 C above ambient. Industrial-grade -40 C to +85 C ambient requires verifying junction-rise in a sealed enclosure with no forced airflow.
Failure modes observed with LAN9255 designs: (1) Improper decoupling - place 0.1 uF X7R ceramic caps on every VDD/VDDIO/VDD_USB/VDD_ETH* pin within 1 mm. (2) Missing crystal load caps - the 25 MHz crystal at OSC1/OSC2 needs 12-20 pF load caps matched to the crystal datasheet. (3) Skip EEPROM configuration - the EEPROM stores ESC register defaults; without it, EtherCAT stack may not initialize. (4) Forget to install the nRESET pull-up to VDDIO. (5) Wrong PHY transformer - use only magnetics qualified for 100BASE-TX with 1:1 turns ratio and 2 kV isolation.
Route RMII traces (pins 16-23) with controlled 50-ohm impedance and match lengths within 50 mil. SPI signals to the integrated MCU do not need impedance control but keep signals over the MCU ground plane. The LAN9255 supports hardware distributed-clock synchronization with jitter less than 1 us typical - ensure clean 25 MHz oscillator reference and that no high-current switching traces cross Port 0/Port 1 differential pairs to maintain EtherCAT signal integrity and EMC compliance (EN 55011 / CISPR 11 Class A).
Thông tin tuân thủ
RoHS compliant per Microchip product page. Industrial temperature grade -40 C to +85 C (suffix -I). Not AEC-Q100 qualified - this part is targeted at EtherCAT slaves in industrial automation, not automotive. Reference Microchip datasheet 00003646B for full compliance details and reach declarations.
