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Internal Pullup Resistor values


Minor question for you guys:
Can you tell us what the values are for the usbizi’s internal pullup resistors on the digital I/O’s?
Probably not a common question since they obviously have to be enough to not let the chip burn out under a no-load switch. I’m just being overly thorough in calculating the current flow through one of my circuits that provides an input. :slight_smile:



For deep internal info on the processor you can use “LPC23xx user manual”, google will find it for you.

In general, the built in resistors are very week, about 100K ohm.