ENC424J600-I/PT - 10/100 Ethernet Controller | Microchip
MPN: ENC424J600-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
ENC424J600-I/PT Overview
An Ethernet controller is a mixed-signal network interface IC that connects an embedded host to a physical Ethernet network. This device combines the media access controller, physical-layer transceiver, packet filtering, hardware cryptographic security engines, and a factory-programmed unique MAC address. That integration reduces the external component count compared with separate MAC and PHY designs.
Key verified features include IEEE 802.3 support for 10Base-T and 100Base-TX, auto-negotiation, packet-filtering schemes, SPI or parallel interfacing, and a 24-Kbyte on-chip RAM buffer. The parallel option is especially useful for hosts that lack a sufficiently fast SPI interface or need deterministic register and packet-buffer access.
The ENC424J600 family is architecturally positioned between simple SPI Ethernet modules and highly integrated host Ethernet interfaces. SPI reduces host pin count and simplifies connections to microcontrollers, whereas the parallel interface can offer greater throughput. Firmware must support the controller registers, buffer format, interrupt behavior, and Microchip network stack expectations.
Typical uses include industrial control systems, embedded data acquisition units, building-automation controllers, serial-to-Ethernet gateways, test equipment, and compact embedded platforms. The integrated PHY removes the need for a separate Ethernet transceiver, while the on-chip packet buffer allows the host and Ethernet interface to operate more asynchronously.
PCB implementation must follow the manufacturer’s pinout and layout guidance, particularly for the crystal or clock circuitry, decoupling, reset, and mixed-signal PHY connections. A 3.3 V system also needs to confirm that every connected host signal remains within the device’s verified electrical limits.
This page consolidates manufacturer and distributor data with package, sourcing, interface, and replacement guidance that is not presented as one integrated engineering record elsewhere.
Drop-in alternatives for ENC424J600-I/PT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ENC424J600-I/PT (same form factor and footprint) — differing in Auto-Negotiation, Package, Packet Filtering, Product Type, Supply Current.
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| Product Type | Stand-alone 10/100 Ethernet controller |
| Ethernet Support | 10/100 Base-T Ethernet |
| Lowest Data Rate | 10 Mbps |
| Supply Voltage Range | 3 V to 3.6 V |
| Supply Current | 117 mA |
| Operating Temperature Range | -45°C to +85°C |
| Integrated Functions | MAC and PHY |
| Host Interfaces | SPI and parallel interface |
| On-Chip RAM Buffer | 24 Kbyte |
| MAC Address | Factory-programmed unique MAC address |
| Security Features | Hardware cryptographic security engines |
| Ethernet Standards | IEEE 802.3 applicable to 10Base-T and 100Base-TX |
| Auto-Negotiation | Supported |
| Packet Filtering | Multiple incoming-packet filtering schemes |
| Pin Count | 44 pins |
| Package | 44-lead TQFP, 10 x 10 x 1 mm |
| Mounting Type | Surface mount |
ENC424J600-I/PT 44-lead tqfp, 10 x 10 x 1 mm Pin Configuration Guide
Pin configuration for ENC424J600-I/PT (44-lead tqfp, 10 x 10 x 1 mm package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for ENC424J600-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
ENC424J600-I/PT is suitable for 6 applications: Industrial Control Gateway, Embedded Data Acquisition Unit, Building Automation Controller, Test and Measurement Instrument, Serial-to-Ethernet Gateway, Compact Embedded Network Platform.
Industrial Control Gateway
The ENC424J600-I/PT fits an industrial gateway that must connect an embedded controller to a 10/100 Base-T network without a separate Ethernet PHY. Its integrated MAC and PHY reduce board area, while the 24-Kbyte packet buffer helps decouple short network traffic bursts from host processing. The -45°C to +85°C specified range supports equipment deployed across varied industrial ambient conditions. Use SPI when host pin count is constrained, or the parallel interface when the host bus can support wider register and data access. Firmware must implement Microchip-compatible Ethernet initialization, packet handling, and network-stack integration, while the enclosure and cable path must address industrial grounding and surge requirements separately.
Recommended
Embedded Data Acquisition Unit
The ENC424J600-I/PT can add wired Ethernet to a data-acquisition unit that collects sensor measurements locally and forwards them to a supervisory network. The integrated 10/100 Base-T MAC and PHY avoids a separate transceiver, and the 24-Kbyte RAM buffer supports packet buffering between network and host activity. This is useful where periodic telemetry, alarm records, and configuration traffic must share one connection. The controller’s SPI interface can minimize host connections, while its parallel interface offers an alternative for higher-bandwidth register access. Firmware should define timeout, retry, and buffering policies so acquisition timing is not disrupted by transient Ethernet traffic.
Recommended
Building Automation Controller
The ENC424J600-I/PT is suitable for building-automation controllers that bridge sensors, relays, HVAC equipment, or access-control nodes to a 10/100 Base-T network. Its integrated MAC and PHY supports a compact Ethernet implementation, and hardware security engines add device-level cryptographic functions without relying solely on host software. The specified -45°C to +85°C range is useful in building equipment, although indoor installation temperature and enclosure heating must still be checked. SPI helps conserve host pins, and the parallel interface may suit a higher-throughput supervisory controller. Firmware should include secure configuration access, authenticated management, link monitoring, and controlled recovery after network faults.
Recommended
Test and Measurement Instrument
The ENC424J600-I/PT can provide network connectivity for a test instrument that must transfer measurement data, configuration files, and diagnostic results over Ethernet. The 10/100 Base-T interface supports management traffic that does not require gigabit throughput, while the integrated MAC and PHY simplify the physical-layer implementation. The 24-Kbyte on-chip buffer can absorb short traffic bursts during acquisition or result-transfer phases, although sustained throughput still depends on host firmware and the selected host interface. For laboratory equipment, use controlled grounding, isolated communications where required, and verified magnetic-jack layout. The controller’s 3 V to 3.6 V operating range must be reconciled with the instrument’s analog and digital rails.
Recommended
Serial-to-Ethernet Gateway
The ENC424J600-I/PT can serve as the Ethernet endpoint in a serial-to-Ethernet gateway that converts legacy device traffic into network-accessible data. Its integrated MAC and PHY removes the need for a discrete network transceiver, and the 24-Kbyte buffer can hold data during bursts from a busy serial source. The SPI interface is particularly practical for small microcontrollers with limited I/O, while the parallel interface can suit hosts needing faster host-side transfers. Firmware must define serial framing, buffering limits, timeout behavior, and protocol conversion so an overloaded serial link cannot exhaust Ethernet memory. Production designs should also verify link behavior under disconnects, cable swaps, and sustained traffic.
Recommended
Compact Embedded Network Platform
The ENC424J600-I/PT is appropriate for compact embedded platforms that need Ethernet without adopting a large module. Integrating the MAC, PHY, packet filtering, security engines, and factory-programmed MAC address can reduce component count and software setup compared with a discrete network design. The 44-lead 10 x 10 mm TQFP package still requires careful fanout and mixed-signal layout, so it is not as mechanically simple as a connector-mounted module. SPI is useful for compact host boards, whereas the parallel interface should be selected only when the host can support the necessary pins and timing. Host firmware must also be capable of initialization, interrupt management, packet filtering, and field configuration.
Recommended
Recommended Products Summary
Engineering reference data for ENC424J600-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Brand | Microchip Technology |
| Package | 44-lead TQFP, 10 x 10 x 1 mm |
| Ethernet Support | 10/100 Base-T |
| Lowest Data Rate | 10 Mbps |
| Supply Voltage Range | 3 V to 3.6 V |
| Supply Current | 117 mA |
| Operating Temperature Range | -45°C to +85°C |
| Host Interfaces | SPI and parallel interface |
| On-Chip RAM Buffer | 24 Kbyte |
| Integrated Functions | MAC and PHY |
Design Notes
Use the official ENC424J600/624J600 manufacturer datasheet as the controlling source for the 44-TQFP land pattern, pin functions, exposed connections, and recommended layout. Place all required decoupling capacitors close to their associated supply and ground pins, and avoid routing digital host signals beneath sensitive clock or Ethernet PHY regions. The supplied excerpts do not provide exact capacitor values or trace dimensions, so those details must not be guessed.
Design the ENC424J600-I/PT supply path for the verified 3 V to 3.6 V range and account for the listed 117 mA supply current. Keep the Ethernet controller’s supply rail stable while the host and external circuitry operate. Where interfaces cross supply domains, confirm every pin’s voltage tolerance against the manufacturer table; the supplied data does not provide logic-level thresholds or absolute maximum ratings.
Treat Ethernet clock, magnetics, reset, and host-bus routing as separate implementation concerns. Keep traces short where the datasheet recommends, maintain the specified clock network, and use a PCB stack-up and return path suitable for 100Base-TX. SPI traces may tolerate a compact layout better than the parallel bus, which should be routed with attention to skew, loading, and signal integrity.
Do not assume ENC424J600-I/PT, ENC424J600-I/ML, or ENC624J600 are drop-in equivalents merely because their descriptions contain 10/100 Ethernet and Microchip branding. Package suffix differences can alter temperature grade or shipping form, while a different family can change pins or host behavior. Confirm the full orderable MPN, package, pinout, electrical ratings, clock requirements, and software support before revising a production BOM.
Compliance Information
The verified manufacturer data establishes IEEE 802.3 conformance applicable to 10Base-T and 100Base-TX, including optional auto-negotiation. No explicit environmental, automotive, lead-free, halogen-free, or conflict-minerals declarations were supplied.
