Looking for some USB app notes at microchip, here are the *related* results... Appnote Function Chart - Connectivity - USB AN258 Low Cost USB Microcontroller Programmer The building of the PICkitT 1 FLASH Starter Kit 07/07/2003 AN730 CRC Generating and Checking 05/22/2000 AN731 Embedding PICmicro Microcontrollers in the Internet 06/26/2000 AN734 Using the PICmicro SSP for Slave I2C Communication 08/07/2000 AN735 Using the PICmicro MSSP Module for I2C Communications 08/16/2000 AN736 An I2C Network Protocol for Environmental Monitoring 09/07/2000 AN737 Using Digital Potentiometers to Design Low Pass Adjustable Filters 02/24/2004 AN742 Modular Picmicro Mid-Range MCU Code Hopping Decoder 03/16/2001 AN744 Modular Mid-Range PICmicro KeeLoQ Decoder in C 05/07/2001 AN819 Implementing Bootloader Firmware Application Note 10/15/2001 bye Mauricio -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.