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PIC18F2550 vs. FTDI chip

 
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kender



Joined: 09 Aug 2004
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PIC18F2550 vs. FTDI chip
PostPosted: Sat Oct 16, 2010 12:20 am     Reply with quote
Colleagues,

I’ve used FTDI chips for USB serial port many times with great success. Most of those projects didn’t have strict constraints on hardware cost. On the other side, PIC18F2550 has USB, and the claim that required driver is often pre-installed on Windows sounds very promising too. I’m about to design a device around PIC18F2550. Are there caveats?

Interestingly, CCS itself is using the FTDI chips in the ICD-U programmers. ICD-Us are produced in medium volumes. Probably the hardware costs may have been reduced by using a PIC18F2550. I'm sure CCS knows all the options.

Any suggestion, insight, reference is appreciated!

- Nick
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Last edited by kender on Sat Oct 16, 2010 5:32 pm; edited 1 time in total
vinniewryan



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Re: PIC18F2550 vs. FTDI chip
PostPosted: Sat Oct 16, 2010 1:00 am     Reply with quote
kender wrote:
...

- Nick


This is very informative, I had an ICD-U64 go dead from a voltage spike in my (old) computers power supply, and I was thinking of trouble shooting the onboard PIC to find what component or pin went out.

I just purchased 4 18F2250's for a project I'm working on for displaying the pixel data from a micro CMOS onto a computer screen, and this chip was a joy to work with. It has many on board features and hardware communication functions, and a pretty fast internal clock speed, perfect for prototyping and processing.

If anyone has any code using this chip and the onboard functions, pm me if you don't mind sharing it Surprised
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bkamen



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PostPosted: Sat Oct 16, 2010 7:51 am     Reply with quote
If you download Microchip's USB libraries, you'll see a bunch of useful examples that work immediately with C18.

I realize this is CCS's site - but those examples can be ported over or at least give you a good idea of what to do.

As to the question of "windows built in drivers" -- to some extent yes.

Look up the CDC devices (standard on windows) and the HID devices (also fairly standard).

Many examples are included from Microchip.. as well.

Cheers,

-Ben
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