PIC18F67J60 questions

[mister_e]

i'm planning to buy that one
http://mikroe.com/en/tools/lv18fj/

as soon as it is available...

I'm kinda addict to their board now

[dhouston]

i'm planning to buy that one
http://mikroe.com/en/tools/lv18fj/

as soon as it is available...

I'm kinda addict to their board now

Nice! But probably overkill for my needs.

I haven't looked at mikroBasic for more than a year. I gave up on them when they seemed to be experiencing interminable delays in supporting the ENC28J60. Now that I've taken a fresh look, they appear to have made great leaps since then - there's already support for the PIC18Fx7J60 chips, including an open source UDP bootloader, and they handle interrupts much better than does PBP. I don't think I'll wait for Fred's drivers.

[Darrel Taylor]

and they handle interrupts much better than does PBP.

[dhouston]

i'm planning to buy that one
http://mikroe.com/en/tools/lv18fj/

I bought their EasyPIC4 board http://www.mikroe.com/en/tools/easypic4/. To be honest, I think it's quite impressive but nearly useless for anything other than educational purposes. There are no ZIF sockets. no any easy way to connect SOIC adapters, etc. nor can it readily do ICSP.

[mister_e]

Yup the ZIFF socket would be interesting... but erm erm, the prices would be far different...

With recent device programmer prices (i.e. PICKIT 2) i wonder why using it for ICSP anyways?

But yeah, for huge, tricky, serious or long term project, i don't use ANY development board anyways. I do a custom PC-board instead.

I still like their board

[dhouston]

With recent device programmer prices (i.e. PICKIT 2) i wonder why using it for ICSP anyways?

I have a spinal cord injury which restricts my mobility - I'd like an integrated system that does not require a lot of plugging/unplugging/swapping, etc.

[mister_e]

Oups... now it make sense

There's still the SIM option.. but... erm, erm, still not a real fan of it yet.

[dhouston]

I have the Epic+ and USB programmers from MEL along with the 8-40 pin DIP and 8-14 pin SOIC adapters. They handle everything I've needed til now. I'll need to build an adapter for ICSP programming the 18F67J60 on the Ethernet Mini board. (See my next post for details.) And I have another board of my own design that has four TSSOP-8 PICs for which I'll need to design and build an adapter. Unfortunately, the EasyPIC4 won't be of much help here.

[dhouston]

Fred's Ethernet Mini board has an ICSP header but it is designed to interface with Microchip's MPLAB. Those of us with meLabs programmers will need to make some changes to the Ethernet Mini board and build an adapter from our programmer to the ICSP header.

The latest software for the various meLabs programmers supports the 18F67J60 but modifications are needed for all but the U2 programmer as these are 3.3V devices.

This is all detailed (in part) on these pages.
http://www.melabs.com/support/icsp.htm
http://www.melabs.com/support/3v_icsp.htm
http://www.melabs.com/support/3v_icsp.htm#icsp

There is a schematic of the Ethernet Mini in the ZIP download on Fred's EDPT page.
http://www.edtp.com/download/mini/et...ni_package.zip

The details vary with the specific programmer but most require a 1K pull-up on MCLR while the Ethernet Mini has a total of 11K. They also call for a 4.7µF cap on Vddcore/Vcap. The datasheet calls for a 1-10µF cap. The Ethernet Mini has a 2.2µF cap on this pin and I'm not sure whether it will need to be changed. I'm hoping that either Fred or meLabs can answer this.