Troubleshooting Guide
Programming problems
Problem
ISP
Cause
ISP cable is not
Solution
Connect a 6-pin cable between the
programming connected
does not work
ISP6PIN connector on STK500 and
the ISP connector on STK505 on the
selected target section. See also
Programming the AVR.
ISP
The AVR is running at Make sure the clock switch on
programming too low clock
does not work frequency.
STK500 is in the right position. In
the Board page of the programming
dialog in AVR Studio, try reducing
the clock frequency so less or equal
to the frequency the AVR is running
at.
ISP
The SPI enable fuse is Program the SPI enable fuse using
programming
does not work
not programmed.
high voltage programming.
ISP
The Reset Disable fuse Unprogram the Reset Disable fuse
programming
does not work
is programmed.
using high voltage programming.
ISP
The DebugWire fuse is Unprogram the DebugWire fuse using
programming
does not work
High-Voltage
programming
programmed.
The 10-pin cables are
not connected
high voltage programming.
See the Programming the AVR
chapter for setup.
does not work. correctly.
High-Voltage
The (BSEL2),
See the Programming the AVR
programming
OSCSEL, RESET and chapter for setup.
does not work. VTARGET jumpers on
STK500 are not set
correctly.
High-Voltage
programming
The STK505 clock
switch is in the wrong
Set the switch to the EXT CLK
position. See also Programming the
does not work. position.
AVR.
High-Voltage
programming
The STK505 Reset
switch is in PORTB
Set the switch to the RESET position.
does not work. position
10