ATSTK526 Atmel, ATSTK526 Datasheet - Page 23

• Manufacturer Part Number: ATSTK526
• Description: KIT STARTER FOR AT90USB82/162
• Manufacturer: Atmel
• Series: AVR®r
• Type: MCUr

Specifications of ATSTK526

• Contents: Starter Kit Board, Power Supply, Cable and Software
• Processor To Be Evaluated: AT90USB82/162
• Data Bus Width: 8 bit
• Interface Type: RS-232, USB
• Silicon Manufacturer: Atmel
• Core Architecture: AVR
• Silicon Core Number: AT90USB82, AT90USB162
• Kit Contents: Board Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT90USB162, AT90USB82
• For Use With: ATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7709B–AVR–07/08
Using the STK526
2.9
2.9.1
2-22
Debugging
Debugging with AVR JTAG ICE mkII
Figure 2-25 . STK526 Configuration for Parallel Programming
High Voltage Parallel Programming allows any operation on the device. This mode is
very usefull if a crucial fuse has been erased inadvertently. For example, if user disables
the SPIEN fuse from ISP mode, it can only be restored using Parallel Programming.
Every STK526 can be used for debugging with JTAG ICE MK II using the debugWire
protocol through the ISP connector.
Connect the JTAG ICE mkII as shown in Figure 2-23 (like for a simple programming
operation), for debugging help, please refer to AVR Studio® Help information.
As AT90USB82/162 parts are factory configured with the higher security level set, a chip
erase operation will be performed on the part before debugging with JTAG ICE MK II.
Thus the on-chip flash bootloader will be erased. It can be restored after the debug
session using the bootloader hex file available from ATMEL website or from the CD-
ROM included in the starter kit.
Note:
Starting a debugWire session will enable the DWEN fuse and disable the SPIEN fuse,
that will prevent ISP programming. AVR Studio® can restore the SPIEN fuse before clos-
ing a debugWire session. However the fuse bits can also be restored in Parallel
Programming mode.
STK526 rev. B Hardware User Guide