Lpc2000

You have to use a crystal with a frequency higher then 10MHz or you 
can't use boot mode to program flash and so download your program. This 
is written on Philips user manual.
Best regards,
Massimo Manca, Micron Engineering

rattencremesuppe wrote:

> Hi,
>
> I'm using a TinyARM eval board which worked fine with a 10MHz crystal.
> Then we replaced it with a 3.6864MHz crystal and now Philips Flash
> utility says that it can't connect to the test board.
>
> When measuring the UART TX pin with a scope, there is some traffic
> when trying to connect. But Philips flash utility somehow doesn't
> recognize.
>
> My flash utility settings are:
> Device: LPC2106
> XTAL Freq. (kHz): 3686
> Use Baud Rate: (have tried all available baudrates with no success)
> Time-Out (sec): 10
> "Use DTR/RTS" is unchecked (there are only Rx & Tx connected)
>
> 3.6864 MHz seems to be a fairly common clock rate and there should be
> some standard baudrates available (divisor 32 for 115.2 kBaud, for
> example)
>
> Is anyone out there using LPC2106 w/ 3.6864 crystal and knows how to
> use the flash utility for this setup? If not, are there any
> alternatives to using the philips flash utility?
>
> Obviously, I can't use a own bootloader because there is no
> possibility to initially put it on the chip, when the flash utility
> doesn't work.
>
> Best regards,
> Patrick
>
>
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