Emulating 1-wire interface with a microcontroller

Hi,

I have a microcontroller with GPIO, I2C and UART, and I'm trying to
emulate a 1-wire interface so that the microcontroller appears as an i-
button to another ASIC. I'm wondering if it would be easier to use
either of the serial channels(UART or I2C) or should I just emulate it
with GPIO?

Would also appreciate any tips/help on how to emulate, and 1-wire
standards, since I'm new to 1-wire and ibutton.

if u ask me.. then just a GPIO is sufficient... UART and I2C might not solve the purpose as good as a GPIO.
if you want info on 1-Wire protocol, the best place is the mother website of 1-wire.. http://www.maxim-ic.com
check out this overview application note for 1-wire protocol
http://www.maxim-ic.com/appnotes.cfm/an_pk/1796