LPC1769 supply

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by timer on Sun Jun 17 06:59:54 MST 2012

I have nen LPCXpresso LPC1769 Board.
My programm with at the moment only a PWM-Function works quite well when it is connectet with usb by the LPC-Link.
But when it is externaly powered by the 3V3 pin the LED2 is glowing a little bit, but I doesn't measure the PWM-Signal. But when I connect additionally an extarnal 5V source to the VIN then everything works well again.

Due to the schematics the target board doesn't need the 5V but why it looks like my programm doesn't start.

Thanks for help.