The USB in-circuit programmer for Atmel AVR controllers is termed as USBasp which consists of an ATmega48 or ATmega8 along with a couple of passive components. In the design, no special USB controller ...

Last Fall [Kevin] wanted to program some newer TPI-only AVRs using an old USBasp he had kicking around his lab. Finding an “odd famine of information” and “forums filled with incorrect information and ...