Based on my calculations, 16MHz can only get to 19,200 (7% error at 38,400) and 24MHz can get 38,400. If you went up to 48MHz crystal you could get 57,600. -- Sean --- In lpc2000@yahoogroups.com, "philips_apps" <philips_apps@y...> wrote: > > All, > > based on the algorithm the bootloader uses to determine the > baudrate, as Joel already found out, it is correct that the max > baudrate for 12 MHz is 38400 Baud. > > Will do some additional tests to determine the baudrates for 16 MHz > and 24 MHz but we assume that 12 MHz will be the most used crystal > as it provides functionality for USB and enables the 60 MHz max. CPU > speed as well. > > Sorry for not providing the appropriate values in the table for the > ISP, will update with the next reloease of the Users Manual but that > might still take a little while. > > Robert > > --- In lpc2000@yahoogroups.com, "Joel Winarske" <joelw@i...> wrote: > > > > > To get the 48 MHz necessary for the LPC214x USB, you must use a > crystal > > > of 12.0 MHz, 16.0 MHz, or 24.0 MHz. None of these frequencies > are > > > mentioned in the manual table 291 that lists the possible ISP > baud > > > rates with various crystal frequencies. Can you use serial ISP > with > > > 12/16/24 MHz, and with which baud rates? > > > > At 12MHz the highest the Phillips Flash utility will connect is > 38.4k baud. > > I cannot connect running a higher baud. > > > > Joel > > >
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Re: LPC214x crystal frequencies // ISP max baudrate 38.4 kBaud using 12 MHz
2005-11-17 by seangra
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