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Green circuit board with RJ45 port and extension headers

Seeed Studio

Seeed Studio MT3620 Ethernet Shield v1.0

SKU CH-Q5YH-R3FDY

Adds 10/100/1000Base-T Ethernet to an MT3620 board via SPI at up to 20 MHz

  • TypeSensors
  • Ethernet connectivity for Azure Sphere via SPI
  • IEEE 802.3 compatible 10/100/1000Base-T controller
  • Automatic polarity detection on single RJ45 port
  • Full and half-duplex operation supported
  • Compact 50mm x 68mm x 19mm board

MT3620 Ethernet Shield v1.0

This shield adds a wired Ethernet port to the Azure Sphere MT3620 development board through the Microchip ENC28J60 controller. It connects via the board's extension headers and provides a SPI interface running up to 20 MHz. The module is aimed at developers building connected IoT prototypes that require a physical network link.

IEEE 802.3 compatible 10/100/1000Base-T support

The integrated MAC and 10Base-T PHY handle full and half-duplex modes with automatic polarity detection on the single RJ45 port. Throughput is limited to 10 Mbps by the ENC28J60, so the shield suits low-bandwidth telemetry or command channels but not high-speed data streaming. The SPI bottleneck and 10Base-T PHY define the practical ceiling.

Extension headers and UART3 breakout

Four extension headers (H1 through H4) pass signals between the shield and the MT3620 board, while the J2 header exposes UART3 on GPIO66 to GPIO69 for serial debugging or auxiliary devices. A 3.3 V power LED confirms the board is energised. No additional cables, software libraries or mounting hardware are included in the package.

Highlights

  • Ethernet connectivity for Azure Sphere via SPI
  • IEEE 802.3 compatible 10/100/1000Base-T controller
  • Automatic polarity detection on single RJ45 port
  • Full and half-duplex operation supported
  • Compact 50mm x 68mm x 19mm board

Specifications

TypeSensors

Questions about this item

Will the 20 MHz SPI interface on this shield work with the MT3620 development board headers H1 through H4?

Yes, the ENC28J60 controller connects through the SPI interface at up to 20 MHz using the H1 to H4 extension headers on the MT3620 development board.

How can I confirm the shield is powered and the Ethernet link is active after connecting it?

The red 3.3 V power LED lights when the board is powered, and the RJ45 port LEDs indicate link status and activity on the 10Base-T connection.

Does the package include the MT3620 development board or any cables, or must they be purchased separately?

The shield weighs 47 g and measures 50 mm by 68 mm by 19 mm; the MT3620 development board and any Ethernet or UART cables are not included.

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