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Lpc2000

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Message

Re: LPC2000 and EMC radiation (Application radio modems)

2005-01-24 by tsvetanusunov

> Some micro's have terible radiation characteristics and are 
> unsuitable to in radio modems with sensitive analogue frontends.
> 
> ARM controllers are used in mobile phones  etc.
> 
> What characteristics do the LPC2000 have that lend thenselves
> radio modems / phones etc.

this is very interesting topic, I can't find any info on this in LPC 
datasheets, but we found interesting feature: when LPC PLL is enabled 
if you have near by (1-2 meters) FM radio you can hear the sweep tone 
for about second.
Our QC found this as they have radio on their desk where LPC boards 
are tested, no one of other microcontrollers we used make such 
interference to the radio.

Best regards
Tsvetan
---
PCB prototypes for $26 at http://run.to/pcb 
(http://www.olimex.com/pcb)
PCB any volume assembly (http://www.olimex.com/pcb/protoa.html)
Development boards for ARM, AVR, PIC, and MSP430  
(http://www.olimex.com/dev)

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