LPCXpresso IDE中的主题 LPCxpreeso boards different

LPCxpreeso boards different

lpcware — Thu, 16 Jun 2016 00:20:23 GMT

Content originally posted in LPCWare by LynnF on Sun Mar 07 09:14:56 MST 2010
I have 2 LPCXpresso boards and I have noticed that they are not the same. On one there are components located at L1 & L2 just to the right of the processor on the "Link" board and on the other they are missing....what gives?

Re: LPCxpreeso boards different

lpcware — Thu, 16 Jun 2016 00:20:24 GMT

Content originally posted in LPCWare by rmteo on Sun Mar 07 09:31:51 MST 2010
Mine doesn't have those inductors too. Works fine though.

[IMG]http://home.earthlink.net/%7Ermteo/sitebuildercontent/sitebuilderpictures/a_70c.jpg[/IMG]

Re: LPCxpreeso boards different

lpcware — Thu, 16 Jun 2016 00:20:24 GMT

Content originally posted in LPCWare by bladerunner on Mon Mar 08 06:26:59 MST 2010
Those parts on my LPC1114 board are also missing. I've looked at the datasheet for the LPC-Link micro LPC3154 - it has internal voltage regulators, both linear and switch-mode. As long as you power the LPC-Link debugger section off the USB port it will be fine as it uses the linear regulators in that mode ( the inductors are not needed). IIRC the current limit is about 80 mA (sourced from pin). Regards :)

Re: LPCxpreeso boards different

lpcware — Thu, 16 Jun 2016 00:20:25 GMT

Content originally posted in LPCWare by LynnF on Mon Mar 08 07:21:42 MST 2010
Interesting...they must have thought they were needed at sometime before...or are they now being added? I can tell you which of the boards was mude first. Cost saving by NXP or oops?

Re: LPCxpreeso boards different

lpcware — Thu, 16 Jun 2016 00:20:25 GMT

Content originally posted in LPCWare by NXP_Europe on Tue Mar 09 08:08:27 MST 2010
Hi All,
These coils are mainly needed if powering the LPC315x from a battery, since the LPClink runs through USB these coils are not needed.

Quote: LynnF
Interesting...they must have thought they were needed at sometime before...or are they now being added? I can tell you which of the boards was mude first. Cost saving by NXP or oops?

The ones with coils were produced first. Since they are not needed, they are removed.

Kind regards,