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LPC1837 Clock Source Drift Error

Question asked by Luiz Gonzaga Nunes Maia Neto on Nov 22, 2018
Latest reply on Nov 25, 2018 by jeremyzhou



This is my first project with the LPC1837 board, and I'm working on a clock synchronization program. I was looking the datasheet and found out the IRC is used as the main clock source for the processor and the peripherals. My question is, why the IRC is used as the main clock source and not the crystal oscillator? The crystal oscillator has a smaller clock error than the IRC, would it not be better? I know that I can change the clock source for the core and peripherals, but I'm wondering why the IRC is the default and not the crystal oscillator.


Thanks for the help.