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Lpc2000

Index last updated: 2026-04-28 23:31 UTC

Message

Re: ISP baudrate

2004-02-06 by Chetan Bhargava

Hi Robert,

That's my answer :-) I use quite a lot of 8051 based micros and in 
there 11.0592MHz is used to generate various rates. I had sme 25MHz 
xtals so I wanted to use them.  :-)

Haven't gone through the UM fully.

Thanks,

Chetan

--- In lpc2100@yahoogroups.com, Robert Adsett <subscriptions@a...> 
wrote:
> Depends on what you mean by special.  To get any particular 
baudrate the 
> VPB frequency and the baudrate divider have to have a relationship 
that 
> allows the divided rate to be 'close' to 9600*16.  In practice 
10MHz works 
> just fine.  There will be other frequencies that work well too.  
Take a 
> look at the user manual.  There is a table of baud rates that can 
be used 
> for ISP with a selection of crystal frequencies that you can use as 
an 
> overview.  If you want to use a particular crystal frequency you 
have lying 
> around you will have to work out whether it's possible or not.
> 
> Robert
>

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