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Atmega128RFR2 rx frame filter question
Hi, I found out by experimenting, that the hardware address filter of the Atmega128RFR2 will pass ALL frames if the "destination addressing mode" bits of the incoming frame are...
Wednesday, 3 September 2014 - 08:25
Balun/filter design for Atmega256RFR2
Hi, I would be interested to test out if the balun/filter could be designed for Atmega128/256RFR2 series by using discrete components. My plan for some future projects is to use...
Tuesday, 14 January 2014 - 09:23
Discussion about RF reference designs
Hi all, I have in the past successfully used the AT86RF230 radio chip. In that case I copied the layout quite accurately from the Atmel application note AVR2005 (http://www.atmel....
Monday, 5 March 2012 - 23:38
Interesting I/O changes in Atmega128RFA1
Hi, While designing a new prototype with Atmega128RFA1 I noticed a very interesting change in the specifications of the digital I/O. Older AVRs have been able to sink/source 20-40...
Monday, 9 January 2012 - 19:15
Atmega128rfa1 compared to other similar SoCs
Hi, The Atmega128rfa1 looks very interesting for replacing traditional AtmegaXXX + AT86RF231 combos in my future projects. However, there are also other competitors which seem to...
Wednesday, 14 September 2011 - 12:50
AVR to AVR programming?
Hi all, I got an idea, not sure if it's stupid or not... :) We need to do a lot of firmware updates on the field for client's AVR based embedded systems. It's very ackward to do...
Friday, 8 April 2011 - 12:40
Mysteriously broken Atmega644p
Hi, I have a couple of dozen Atmega644p based measurement system boards that have been in testing use for two months. After the testing period I noticed that two of them were dead...
Sunday, 12 September 2010 - 22:18
Zero-crossing detector according to an Atmel Application Not
Hi, I was reading trough an Application Note by Atmel: http://www.atmel.com/dyn/resources/prod_documents/doc2508.pdf This document describes a very simple and cheap way of...
Tuesday, 16 March 2010 - 11:01
Need for an external prescaler for atmega644p?
Hi, I have a project which needs a 16 bit counter which is kept in sync to an external clock signal provided by another IC. I plan to use Atmega644p and it's 16bit Timer/Counter 1...
Monday, 8 March 2010 - 08:21
32.768kHz crystal for Atmega164/324/644p
Hi, I have been searching around this forum, other forums, farnell, digikey, etc without results! So, fellow Avrfreaks, I ask you: What is the optimal SMD type 32.768kHz crystal...
Wednesday, 24 February 2010 - 00:48
Waking up interrupts inside a loop
Hi, I'm building a software for Atmega644p @ 8Mhz which needs to run a timer interrupt quite accurately once every 16 ms to do some timing-critical tasks. In addition, I have some...
Tuesday, 3 February 2009 - 10:11