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Very unstable internal RC oscillator on mega88PA
Having issues trying to get some UART communication to run on a mega88PA, I decided to check the clock. Board is working fine otherwise, apart from the UART. I have a minimal...
Thursday, 21 March 2013 - 10:15
Upgraded to 4.18, now neither AVRDragon or JTAGICE MkII work
I was running 4.17, but after having used 4.18 (no SPx) on my portable, my AVRDragon was updated. On my regular machine, AVRStudio 4.17 now complained that it could not run with...
Tuesday, 20 July 2010 - 09:58
PCB Design Resources, and more
Browsing the net, I came across this link: http://www.opencircuits.com/Techniques, which contains a really nice and cear illustration how to handle separate analog/digital ground...
Thursday, 22 April 2010 - 21:29
Filter impedance matching
I'm making an Arbitrary Waveform Generator and need some advice with impedance matching after the output filter. Analog stuff really isn't my area. :-) I have a 7 order low-pass...
Thursday, 28 May 2009 - 22:58
Weird AVRDragon problem when M128 bootloader programming
Suddenly my AVRDragon refuse to program the bootloader of a mega128. When reading back, the flash is empty. Running a verify tells everything is okay, despite the hex file...
Friday, 22 May 2009 - 16:54
XMega crap, sodding EBI, pftt, grrr.
Seeing that the new XMegas devices had a EBI interface with SDRAM support, I quikly hacked a breakout board for a MT48LC16M8 chip (a 16MB * 8-bit SDRAM) which the datasheet...
Monday, 15 September 2008 - 13:33
AVR32 AP7000 Documentation and EAGLE library
Finally, I've finished my EAGLE library for the AP7000. It was quite a job, as the Atmel manuals did not contain good overviews over the BGA pinout, and because different names...
Sunday, 21 May 2006 - 00:33
[MAN] [OT] White bread - Sandwich - Ham
Step 1. The parts. This is pretty important for a good quality sandwich. However, all have different taste, so I'll leave the fine selection details up to you. In this case I've...
Friday, 17 February 2006 - 19:57
Peculiar mega128 SPM behaviour (CPU Bug ?)
I found a peculiar bevaviour when fiddling with some bootloader code. My bootloader is progamming the Flash from an external 512kB SRAM. This SRAM is mapped in (and paged) at...
Thursday, 6 May 2004 - 15:43
AVR lost it's brains !
I think this was discussed a looong time ago, but I don't remember if there was any conclusive results, so, I bring it up again. I just got two failing boards back from a customer...
Tuesday, 9 March 2004 - 16:10
Wow ! 4.08 next week ! (maybe)
According to a very official Atmel representative at todays Nordic seminar, Atmel will release AVR Studio 4.08 next week. When the question on AVR-GCC and plugin support was taken...
Monday, 10 November 2003 - 18:00
AVR - Atmel Versatile Risc
Hello. For some time I've been wondering what the "AVR" stands for. Does anybody know ? My guess is in the subjectling :-) Rgds Jesper Udby
Thursday, 28 November 2002 - 20:08