default frequency of lpc2138
Discussion in "ARM Development" started by siri Jun 23, 2009.
Tue Jun 23 2009, 01:29 pm
hello,
what is the default frequency of the lpc2138, i have connected 12 mhz and compiling using keil,unable to find what is the correct frequency initailly and what should i enable for a desired frequency
what is the default frequency of the lpc2138, i have connected 12 mhz and compiling using keil,unable to find what is the correct frequency initailly and what should i enable for a desired frequency
Thu Jun 25 2009, 04:16 pm
open startup.s and configure PLL like this
i kept my PLL settings as shown above for crystal 14.7456Mhz
for 12Mhz you keep your settings as you want. remember max frequency is 60Mhz. so select multiplier accordingly.
i kept my PLL settings as shown above for crystal 14.7456Mhz
for 12Mhz you keep your settings as you want. remember max frequency is 60Mhz. so select multiplier accordingly.
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