Introduction - If you have any usage issues, please Google them yourself
From ATMEL Corporation AT90 series microcontrollers since the birth of many third-party vendors for the AT90 series developed for the C language program development tools, ICCAVR ATMEL Corporation is the third-party C compiler recommended one. ICCAVR is an ANSI standard C language to develop MCU (MCU) program as a tool for functional fit, easy to use, good technical support