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Contents

Pinout
Key specifications
CAD (KiCad official)
Provenance

README

markdown

ENC28J60T-I

Microchip Tech · Interface - Specialized · QFN-28-EP(6x6)

ENC28J60T-I from Microchip Tech, in a QFN-28-EP(6x6). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	NC	unconnected	Reserved function; always leave unconnected.
2	SO	output	Data out pin for SPI interface.
3	SI	input	Data in pin for SPI interface; Schmitt trigger input, 5V tolerant, with internal weak pull-up to VDD.
4	SCK	input	Clock in pin for SPI interface; Schmitt trigger input, 5V tolerant, with internal weak pull-up to VDD.
5	CS	input	Chip select input pin for SPI interface; Schmitt trigger input, 5V tolerant, with internal weak pull-up to VDD.
6	RESET	input	Active-low device Reset input; Schmitt trigger input, 5V tolerant, with internal weak pull-up to VDD.
7	VSSRX	power_in	Ground reference for PHY RX.
8	TPIN-	input	Differential signal input.
9	TPIN+	input	Differential signal input.
10	RBIAS	passive	Bias current pin for PHY; must be tied to ground via a resistor (2.32 kΩ, 1% per Section 2.4).
11	VDDTX	power_in	Positive supply for PHY TX.
12	TPOUT-	output	Differential signal output.
13	TPOUT+	output	Differential signal output.
14	VSSTX	power_in	Ground reference for PHY TX.
15	VDDRX	power_in	Positive 3.3V supply for PHY RX.
16	VDDPLL	power_in	Positive 3.3V supply for PHY PLL.
17	VSSPLL	power_in	Ground reference for PHY PLL.
18	VSSOSC	power_in	Ground reference for oscillator.
19	OSC1	input	Oscillator input; designed for a 25 MHz parallel resonance crystal or external 3.3V clock.
20	OSC2	output	Oscillator output.
21	VDDOSC	power_in	Positive 3.3V supply for oscillator.
22	LEDB	output	LEDB driver pin; maximum current capacity of 12 mA.
23	LEDA	output	LEDA driver pin; maximum current capacity of 12 mA.
24	VDD	power_in	Positive 3.3V supply.
25	VCAP	power_out	2.5V output from internal regulator; requires a low-ESR capacitor with typical value 10 µF and minimum 1 µF to ground.
26	VSS	power_in	Ground reference.
27	CLKOUT	output	Programmable clock output pin; maximum current capacity of 8 mA.
28	INT	output	INT interrupt output pin; maximum current capacity of 4 mA.
29	EP	passive	Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter	Value
Manufacturer	Microchip Tech
Package	QFN-28-EP(6x6)
Category	Communication Interface Chip/UART/485/232
Pins	29

CAD (KiCad official)

Symbol: ENC28J60T-I
Footprint: Package_DFN_QFN:QFN-28-1EP_6x6mm_P0.65mm_EP4.8x4.8mm
3D model: QFN-28-EP(6x6) (KiCad packages3D, STEP)
3D model files: enc28j60t-i-etched.step / enc28j60t-i-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); enc28j60t-i.step / enc28j60t-i.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Microchip Tech datasheet (102 pp, sha256 b52e8531a128c759, retrieved 2026-10-27, tier: manufacturer)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF