WIZ810MJ

WIZ810MJ

The WIZ810MJ is a plug-in Ethernet module featuring the W5100 hardwired TCP/IP chip with integrated PHY and RJ45 (MAG-JACK).
It allows developers to add Ethernet connectivity to embedded systems without complex hardware design.
Ideal for quick prototyping and reliable network-enabled product development.

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Pin Information

All Pins

JP1

Pin	Type	Name	Description
1	P	3V3D	3.3 V Power
2	O	INTn	Interrupt output (active low)
3	I	WRn	Write Strobe
4	I	RDn	Read Strobe
5	I	CSn	W5100 Chip select (active low)
6	I	NC	No connect
7	I/O	SCLK/A14	SPI : Clock input BUS : A14
8	P	GND	Ground
9	I/O	MOSI/A12	SPI : Master-Out / Slave-In BUS : A12
10	I/O	SCSn/A13	SPI : Chip select (active low) BUS : A13
11	I/O	A10	BUS : A10
12	I/O	MISO/A11	SPI : Master-In / Slave-Out BUS : A11
13	P	GND	Ground
14	I/O	A9	BUS : A9
15	I/O	A8	BUS : A8
16	I/O	A7	BUS : A7
17	I/O	A6	BUS : A6
18	I/O	A5	BUS : A5
19	I/O	A4	BUS : A4
20	I/O	A3	BUS : A3
21	I/O	A2	BUS : A2
22	I/O	A1	BUS : A1
23	I/O	A0	BUS : A0
24	P	GND	Ground
25	I	NC	No connect
26	I	NC	No connect
27	I	NC	No connect
28	I	NC	No connect

JP2

Pin	Type	Name	Description
1	P	GND	Ground
2	I	RSTn	Hardware reset (active low, ≥ 1 µs)
3	I	NC	No connect
4	P	GND	Ground
5	I	NC	No connect
6	O	COL_LED	Collision LED (active low)
7	P	GND	Ground
8	O	TX_LED	Transmit activity LED (active low)
9	I	SPI_EN	SPI EN High : SPI Mode Enable Low : SPI Mode Disable
10	O	RX_LED	Receive activity LED (active low)
11	O	FDX_LED	Full duplex LED (active low)
12	O	LINK_LED	Link LED (active low)
13	P	GND	Ground
14	P	GND	Ground
15	I/O	D1	BUS : D1
16	I/O	D0	BUS : D0
17	I/O	D3	BUS : D3
18	I/O	D2	BUS : D2
19	I/O	D5	BUS : D5
20	I/O	D4	BUS : D4
21	I/O	D7	BUS : D7
22	I/O	D6	BUS : D6
23	P	GND	Ground
24	P	3V3D	3.3 V Power
25	I	NC	No connect
26	I	NC	No connect
27	I	NC	No connect
28	I	NC	No connect

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Features

• Plug-in Ethernet module integrating W5100 chip, transformer, and RJ45
• No external hardware design needed for transformer or PHY
• Fast evaluation of W5100 and MCU on target board
• Supports MCU BUS and high-speed SPI interface
• Supports 4 independent hardware sockets
• Operating temperature: −40 °C to +85 °C
• Compact and easy-to-use form factor

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Electrical Characteristics

DC Characteristics

Symbol	Parameter	Min	Typ	Max	Unit
VDD	Supply voltage	2.97	3.3	3.6	V
VIH	High-level input	2.0	–	5.5	V
VIL	Low-level input	–0.3	–	0.8	V
VOH	High-level output	2.4	3.3	–	V
VOL	Low-level output	0.0	–	0.4	V

Power Dissipation

Condition	Typ	Unit
100M Link	TBD	mA
10M Link	TBD	mA
Power Down Mode	TBD	mA

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Documentation

Title	Description	Link
Datasheet	Technical specifications for WIZ810MJ	WIZ810MJ Datasheet v1.3
Comparison Table	Comparison Table with WIZ810MJ, WIZ811MJ, WIZ812MJ	Comparison Table

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Software Resources

Driver

Driver

Resource	Description
ioLibrary_Driver	Official WIZnet driver library supporting W5100 and related chips
AX1.zip	AX1 Loopback Test Program (install version)

Note: The ioLibrary_Driver provides TCP/IP stack, DHCP, DNS, and other Internet services
for WIZnet’s W5x00 series. Fully compatible with W5100-based modules.

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Hardware Resources

Title	Revision	Description	Download	Notes
schematic & Partlist	1.2	Circuit diagram for hardware design reference	ZIP

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Mechanical Information

Symbols	Dimensions (mm)
A	48.0
B	3.5
C	25.0
D	22.4
E	18.4
F	1.0
G	2.0
H	2.0
I	16.0
J	13.5

• Form factor: Plug-in ioModule
• Pin pitch: 2.54 mm

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Related Products

Product	Description
W5100 Chip	Hardwired TCP/IP Ethernet controller with PHY
WIZ811MJ	Network module similar to WIZ810MJ with alternative pin layout