URL:
<http://savannah.nongnu.org/bugs/?func=detailitem&item_id=13125>
Summary: ATMega169 efuse reserved bit
Project: AVR Downloader/UploaDEr
Submitted by: None
Submitted on: Don 19.05.2005 um 15:50
Category: None
Severity: 3 - Normal
Item Group: None
Status: None
Privacy: Public
Assigned to: None
Originator Name: Christian Zietz
Originator Email:
Open/Closed: Open
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Details:
According to the datasheet the least significant bit of the extended fuse
byte of an ATMega169 is reserved and should not be programmed. In the
corresponding write command in avrdude.conf this bit is marked as "ignore"
("x"). This causes the bit to be set to zero and thus the reserved fuse to be
programmed. Atmel confirmed that the programming of this bit affects the RESET
pin so that further SPI programming is not possible. I had to switch to JTAG
to reset this fuse bit.
I think the avrdude.conf needs to be corrected.
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