lpcware

lpc23xx, capacitor on reset pin

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by m2babaey on Sat Jun 29 21:24:20 MST 2013
Hi
I am having start up problems with lpc23xx devices. i.e sometimes the CPU does not start my code when power is connected
I activated brown out by changing PCON register and the situation got better
when I reduce the pull up resistor or the capacitor I have on the reset pin, the situation gets better

Finally I removed the capacitor and there was only a 39k pull up resistor on reset pin and the problem was solved. The core was starting normal operation each time I connected power

My question is that will this cause a problem if I don't use a capacitor on reset pin?
What other solution do you suggest to solve this problem?

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