hi all! 

I would like to write data into an usb key using a pic. As i understood, the usb key is a slave and the computer is a host.

i have found a lot of information about designing an usb slave using pic with usb uart or with external usb interface but none for designing a host.

is it possible for a microcontroller to be a host and  be able to write and read into an usb key?

Where could i find some informations about how do that?

Thanx for your help.