[SOLVED] ENC28J60 with pic micro controller schematic

[Rohith_elec]

Anyone having schematic for pic micro controller with ENC28J60 ?

 

[electronicus]

Look here: ENC28J60 - eIP-10 Embedded TCP/IP Network Module

 

[bigdogguru]

What PIC model do you intend on using in your design?

Here are a few schematics of PIC/ENC28J60 Dev Boards:

PIC18F4685/ENC28J60 Development Board

PIC-MINI-WEB

BigDog

 

[Rohith_elec]

I intend to use 18F4620

 

[bigdogguru]

I intend to use 18F4620

Either of the designs that I've previously posted should fulfill your requirements.

BigDog

 

[Rohith_elec]

since the 18F4620 is a 5V , should I use a voltage levels shifter for the SPI lines ?,

my ENC28J60 , getting heated up easily, so i am asking...

 

[bigdogguru]

Yes.

The first design powers the PIC at 5V and the ENC28J60 at 3.3V, but uses inline 180Ω resistors on the ENC28J60 SPI lines.

The second design powers both the PIC and the ENC28J60 at 3.3V.

A level shifter or bidirection transceiver would be strongly recommended.

The are several available single chip solutions designed for just such a purpose.

BigDog

 

[Rohith_elec]

ohh,

I sucessfully made a websever with that,

due to the lack of level shifter, can any damage been made to the ENC28J60 ?

 

[bigdogguru]

I sucessfully made a websever with that,

Congratulations, keep up the good work.

due to the lack of level shifter, can any damage been made to the ENC28J60 ?

Sure, whenever you drive I/O lines above their maximum specified levels, damage may occur.

I would remedy the situation ASAP, before continuing with your development.

You may have gotten away with it up till now, but eventually it will become a serious issue.

BigDog

 

[Rohith_elec]

can you name a single chip level shifter ?

I think this module can handle 5V, i am using the same

**broken link removed**


anyway please name a single chip level shifter for me

thank you
Rohith

 

[bigdogguru]

I usually keep several of the TI bidirectional transceivers on breakout boards handy for prototyping, like the SN74LVC4245A or the SN74LVCXT45 series.

I have attached a few documents discussing the proper selection of these devices.


There are a few bidirectional transceivers available with low pin counts designed specifically for I2C and SPI.

Logic Level Converter

However, I rarely use these in a design, due to the fact I usually need more than a few lines converted to different levels.


BigDog