6.4.1 The RESET Jumper

The RESET jumper connects the RESET pin on the target AVR device to the STK600. When the RESET jumper is mounted, the STK600 controls the RESET signal. When the RESET jumper is not mounted, the RESET signal is disconnected. This latter is useful for prototyping applications with an external reset system.

The RESET jumper must always be mounted when high-voltage programming an AVR device. If using an external reset system, it must allow the reset line to be controlled by the STK600 during programming.