© 2006, LJCV Electronics Preliminary Information Page 1

nic28-pcb

nic28 Network Interface Card bare Printed Circuit Board

Description The nic28-pcb is the bare printed circuit board for the nic28 network interface card implemented with Microchip Technology new Stand-Alone ENC28J60 Ethernet Network Controller. The printed circuit board layout accommodates all required components for the Ethernet controller, plus a 3.3V Voltage Regulator and 3-State Buffer for level conversion, and a RJ-45 jack with integrated magnetics and built-in Link and Activity LEDs for connection to an Ethernet Local Area Network. The nic28 can be used with any Microprocessor or Microcontroller supporting the industry standard SPI™ interface. Appendix A of this document includes a detailed schematic of the nic28 board, Appendix B the board layout and component location and Appendix C a Bill Of Materials. For complete functional information consult the nic28 datasheet.

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Appendix A – nic28 Schematics

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Appendix B – nic28 Board Layout and Component Location

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Appendix C – Bill of Materials

Reference ID Description Value Package Part Number QTYC1 Tantalum Capacitor 10µF 10V 3216 1C2,C3 Ceramic Capacitor 18pF 1206 2C4,C5,C8,C9,C10,C11,C12

Ceramic Capacitor .1µF 1206 7

C7 Tantalum Capacitor 47µF 10V 3528 1C6 Ceramic Capacitor .47µF 1206 1J2 Ethernet RJ45 with

Pulse TransformerPulse EngineeringJ1006F01P

1

L1 Ferrite Bead - SMD 60O 1210 1R1, R2, R3, R4 Resistor SMD 5% 180 O 1206 4R5 Resistor SMD 1% Note 1 1206 1R6, R7 Resistor SMD 5% 330 O 1206 2R8, R9, R10, R11 Resistor SMD 1% 49.9 O 1206 4U1 Ethernet Controller SOIC 28 Microchip Technology

ENC28J60-I/SO1

U2 3 State - Buffer n/a SOIC14 74ACT125SC 1U3 Voltage Regulator 3.3V SOT-223 LM3940IMP-3.3 1Q1 Crystal - SMD 25MHz HC49US 1

Note 1: 2.32KO 1% for ENC28J60 Rev.B5 or 2.7KO 1% for Rev.B1-B4

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Appendix D – Technical References

[D1] nic28 Network Interface Card Data Sheet, LJCV Electronics, 2006, available at

www.ljc.net/nic28. [D2] ENC28J60 Stand-Alone Ethernet Controller Data Sheet, Microchip Technology

Inc., 2006, Document Number DS39662B. ENC28J60 Rev. B1 Silicon Errata, Microchip Technology Inc., 2006, Document Number DS80254D.

ENC28J60 Rev. B4 Silicon Errata, Microchip Technology Inc., 2006, Document Number DS80257D.

ENC28J60 Rev. B5 Silicon Errata, Microchip Technology Inc., 2006, Document Number DS80264D.

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Revision History: November 2006, Original data sheet document for nic28-pcb. Notes:

Information provided in this document is believed to be accurate and reliable. However LJCV Electronics assumes no responsibility for errors or omissions. LJCV Electronics assumes no responsibility for the use of this information or the devices and/or systems referenced in this document. This document may be subject of future updates and LJCV reserves the right to discontinue production and change specifications and prices without notice. LJCV Electronics makes no warranty of merchantability or fitness for any purposes. ©2006, LJCV Electronics, All Rights Reserved. www.ljcv.net

SPI is a registered trademark of Motorola Corporation. The Microchip name and logo, PIC, PICmicro, MPLAB, ICSP are registered trademarks of Microchip Technology Inc. All other trademarks mentioned in this document are property of their respective companies.