Fwd: [lpc2000] Re: Two layer PCB and LPC2000
2005-07-09 by dasbento@aeiou.pt
I made a board PCB with 4 layers of 32mmx32mm with LPC2129 and have
all available ports and works well.
Domingos Bento
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<twentiethwave@...> -----
Date: Sat, 09 Jul 2005 15:42:01 -0000Show quoted textHide quoted text
From: tonalbuilder2002 <twentiethwave@...> Reply-To: lpc2000@yahoogroups.com Subject: [lpc2000] Re: Two layer PCB and LPC2000 To: lpc2000@yahoogroups.com > But such an approach <4 layer> highly decreasing the advantage > of the low cost of the LPC2000 series. Almost any board can be laid out with just 2 layers if you have enough room. But keep in my mind that is it possible to make a 4 layer board a lot smaller than the same board as a 2 layer, since you don't have to leave room for power traces. Also, it usually takes less time to lay out a 4 layer board which may affect economies on small runs. Keep down the cost of 4 layer boards by "panelizing" them. Place a matrix of small boards on the most economical large board size your supplier offers, then cut them apart with a band saw. Most layout software packages have a panelizing feature or macro. Place long XY traces on the panelized board to guide the cuts, then smooth the cut edges with sandpaper. Bill T. http://www.kupercontrols.com Yahoo! Groups Links ----- Fim mensagem de forward ----- _________________________________________________________ CEAC Cursos de forma\ufffd\ufffdo profissional - pe\ufffda informa\ufffd\ufffdes aqui.: http://ceac.online.pt/