The STK500 is a complete starter kit, programming tool and development system for Atmel's AVR microcontrollers. The STK500 gives AVR usersthe freedom to develop and test complete AVR designs and prototypes. The STK500 supports all Programming modes of all AVR microcontrollers in the sockets as well as ISP Programming of external target systems. The AVR I/O ports are accessible on pin headers that can be used for connecting the on-board LEDs and push buttons, or external signals. The extra RS-232 port can be connected to any of the I/O pins. The STK500 Programming interface is integrated in AVR Studio. The Flash, EEPROM, and all Fuse and Lock Bit options can be programmed individually or with the sequential automatic programming option. The AVR clock frequency and supply voltage can also be controlled from AVR Studio. A DOS Programming software is included for efficient batch programming in a production environment. The active simulator or emulator code in AVR Studio can easily be programmed into the STK500 with one click of the mouse.