The flashmagic software has a good web site and a good forum on programming 
the LPC900 series.

Start here
http://www.flashmagictool.com/

And forum and support here.
http://forum.flashmagictool.com/

You need to understand how to set the LPC933 in to program mode, after the 
1st time.

Also The Keil MCB900 ciurcuit is very good to do this.

Joe


"abhay" <abhaym244@gmail.com> wrote in message 
news:1179303736.573531.112320@e65g2000hsc.googlegroups.com...
> hi,
>
> i am working on PHILIPS series microcontollers(LPC933 particularly).
> i am facing a strange problem ,as in some of my boards the
> microcontroller is not able to be programmed.however it is programmed
> once,but then i am unable to program it again.
> i am using Keil software for my application.
> please provide me possible suggestions regarding the same,given that i
> have checked my connections and basic software configurations
> thoroughly
>
> thank you
> 

hi,

i am working on PHILIPS series microcontollers(LPC933 particularly).
i am facing a strange problem ,as in some of my boards the
microcontroller is not able to be programmed.however it is programmed
once,but then i am unable to program it again.
i am using Keil software for my application.
please provide me possible suggestions regarding the same,given that i
have checked my connections and basic software configurations
thoroughly

thank you