Wilba Posted August 27, 2003 Report Posted August 27, 2003 Hi,I couldn't find any PIC18Fxxx suppliers in Australia so I ordered a PIC18F458 from Futurlec (they didn't have PIC18F452 chips in stock) and the datasheets are practically identical. The only differences I can see are a CAN module and "enhanced" CCP module (ie. extra features on the PIC18F458 ).Anyway, this was before I was convinced I should not try to reinvent the wheel and go 100% with MIOS.Now if I had the source to MIOS, I could just open it up in MPLAB and validate that it will work on the PIC18F458 (ie. recompile with different inc file if need be).But since I can't do that, I'll have to just plug it in and see what happens, but then if it doesn't work, I won't know if it's my board, or my programmer not working, or the fact that I'm using a different PIC.Hmm...Any comments/suggestions welcome.Wilba Quote
Steven_C Posted August 27, 2003 Report Posted August 27, 2003 Farnell sell pic18f452 for around $30Aus, just ring their tech support, and ask the part number, or find it on-line, then make a phone order (you can pick up at the trade counter if you don't have a credit card)much cheaper is a company in NZ, who will mail order to Australia, I think they were called PMB. (correct me Rowan, if you see this)anyway, do a forum search on "Australia" to find more local info useful to you! ;)Which area are you from? (I'm in Sydney)ps I have the farnell p/no. here somewhere, if I find it soon, I will post it here... Quote
Ian_Hurlock Posted August 27, 2003 Report Posted August 27, 2003 Yep Steve that's correct  www.pmb.co.nzNice LCD prices tooIan Quote
Guest den_Juin Posted August 27, 2003 Report Posted August 27, 2003 Or you could get one for free at sample.microchip.com Quote
Steven_C Posted August 27, 2003 Report Posted August 27, 2003 I will be ordering a few parts from PMB shortly (LCD price too good to refuse!) so if you would like me to get a pic18f452 for you while I'm at it, let me know asap. Quote
Guest Kr8R Posted August 27, 2003 Report Posted August 27, 2003 hope this helps :)http://www.dontronics.com/cat_hard_micro_pic.html Quote
Wilba Posted August 28, 2003 Author Report Posted August 28, 2003 Thanks all for the other supplier sources... I was actually hoping someone else had tried using the 458 before and would tell me it should work... I guess I'll just try it and see what happens!The reason I got the PIC18F458 from Futurlec was cos it was US$9.90 and only US$3 postage to Australia, Canada, EU, UK, USA. That's better than I've seen anywhere else. They list the PIC18F452 (US$8.90) but it's currently not in stock. Futurlec were REALLY fast in getting the order to me (package was shipped from Thailand, actually)... and they have cheap LCD modules too and a very cheap PCB manufacturing service (although you need Protel files).Next time I'll just wait till they get 452's in stock and order them instead.http://www.futurlec.com Quote
Nomical Posted August 28, 2003 Report Posted August 28, 2003 Or you could get one for free at sample.microchip.comOr isn't this possible in Australia Quote
Wilba Posted August 29, 2003 Author Report Posted August 29, 2003 can't get free samples to Australia, via the on-line form at least... I've answered my own question - the RAM layout is slightly different so although in theory you could get MIOS running on a 458 (by changing the source), the binary probably won't work.Should have just ordered 452's in the first place... my mistake. Quote
theFATman Posted September 12, 2003 Report Posted September 12, 2003 Or you could get one for free at sample.microchip.com its too bad about the sample chips for you... i wonder why not.hell.. i got 2 for free along with 3 bankstick chips... shipped incredibly fast from thailand or something... Quote
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