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Re: How fast can it go? The LPC2148 much faster :-) // No ISP through USB yet

2005-06-28 by philips_apps

Karl,

we did not plan to offer ISP through USB because it would 
significantly increase the code size for ISP on the chip. However,  
you are at least the second person interested in this feature within 
one weeks time. Based on the overall feedback we will get, it is an 
option for future implementations but very difficult to get the ISP 
through USB into the existing device, the memory holding the ISP code 
would not be sufficient. 

Robert

--- In lpc2000@yahoogroups.com, "Karl Olsen" <kro@p...> wrote:
> --- In lpc2000@yahoogroups.com, "philips_apps" <philips_apps@y...> 
> wrote:
> 
> > today the LPC2148 was announced to the press. The preliminary DS
> > has been posted on this group by our marketing recently. One very 
> > important improvement is the port access time. This is the first 
> > device that has the ports mapped to the local bus. This enables 4 
> > times faster toggle times. The max is now Processor clock divided
> > by 4. This will not get you to 20 Mhz but 15 is as close at it 
will
> > ever get (without increasing the max. clock rate). 
> > 
> > May be 15 MHz is fast enough ?
> > 
> > We plan to have evaluation boards through IAR and Keil available 
> > second half of July.
> 
> Can you do ISP through the USB device port, or do you still need a 
> serial port for that?
> 
> Karl Olsen

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