Feb 9, 2012 #1 R Rohith_elec Full Member level 4 Joined Dec 16, 2011 Messages 198 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,296 Activity points 2,470 Anyone having schematic for pic micro controller with ENC28J60 ?
Feb 9, 2012 #2 E electronicus Full Member level 4 Joined Aug 19, 2005 Messages 221 Helped 36 Reputation 72 Reaction score 19 Trophy points 1,298 Location Romania Activity points 2,427 Look here: ENC28J60 - eIP-10 Embedded TCP/IP Network Module
Feb 9, 2012 #3 bigdogguru Administrator Joined Mar 12, 2010 Messages 9,821 Helped 2,350 Reputation 4,694 Reaction score 2,272 Trophy points 1,413 Location Southwest, USA Activity points 62,383 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
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
Feb 9, 2012 #4 R Rohith_elec Full Member level 4 Joined Dec 16, 2011 Messages 198 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,296 Activity points 2,470 I intend to use 18F4620
Feb 9, 2012 #5 bigdogguru Administrator Joined Mar 12, 2010 Messages 9,821 Helped 2,350 Reputation 4,694 Reaction score 2,272 Trophy points 1,413 Location Southwest, USA Activity points 62,383 Rohith_elec said: I intend to use 18F4620 Click to expand... Either of the designs that I've previously posted should fulfill your requirements. BigDog
Rohith_elec said: I intend to use 18F4620 Click to expand... Either of the designs that I've previously posted should fulfill your requirements. BigDog
Feb 15, 2012 #6 R Rohith_elec Full Member level 4 Joined Dec 16, 2011 Messages 198 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,296 Activity points 2,470 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...
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...
Feb 15, 2012 #7 bigdogguru Administrator Joined Mar 12, 2010 Messages 9,821 Helped 2,350 Reputation 4,694 Reaction score 2,272 Trophy points 1,413 Location Southwest, USA Activity points 62,383 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
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
Feb 15, 2012 #8 R Rohith_elec Full Member level 4 Joined Dec 16, 2011 Messages 198 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,296 Activity points 2,470 ohh, I sucessfully made a websever with that, due to the lack of level shifter, can any damage been made to the ENC28J60 ?
ohh, I sucessfully made a websever with that, due to the lack of level shifter, can any damage been made to the ENC28J60 ?
Feb 15, 2012 #9 bigdogguru Administrator Joined Mar 12, 2010 Messages 9,821 Helped 2,350 Reputation 4,694 Reaction score 2,272 Trophy points 1,413 Location Southwest, USA Activity points 62,383 Rohith_elec said: I sucessfully made a websever with that, Click to expand... Congratulations, keep up the good work. Rohith_elec said: due to the lack of level shifter, can any damage been made to the ENC28J60 ? Click to expand... 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 said: I sucessfully made a websever with that, Click to expand... Congratulations, keep up the good work. Rohith_elec said: due to the lack of level shifter, can any damage been made to the ENC28J60 ? Click to expand... 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
Feb 15, 2012 #10 R Rohith_elec Full Member level 4 Joined Dec 16, 2011 Messages 198 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,296 Activity points 2,470 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 Last edited: Feb 15, 2012
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
Feb 15, 2012 #11 bigdogguru Administrator Joined Mar 12, 2010 Messages 9,821 Helped 2,350 Reputation 4,694 Reaction score 2,272 Trophy points 1,413 Location Southwest, USA Activity points 62,383 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 Attachments scea035a.pdf 313.3 KB · Views: 116 slaa148.pdf 421.6 KB · Views: 112
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