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Analog comparator manual errors
XMEGA AU manual Analog comparator STATUS register  
Tuesday, 3 October 2017 - 07:06
DMAC: Manual errors Saturday, 15 October 2016 - 10:27
Parts with mapped flash to data space
From AVR instruction set manual:   In some parts the Flash Memory has been mapped to the data space and can be read using this command (LD, ...) This property is present for...
Wednesday, 15 October 2014 - 07:03
A note on XMEGA frequency generation mode
Based on my experiments, it may be useful to know that channel A is the complement of channel B ( ,C and D if exist) when the TC is configured in frequency generation mode (A3U -...
Wednesday, 10 September 2014 - 15:27
128MHz frequency on port pin
As we know, CLKper4 can be appeared on some port pins (except A series) and the maximum allowable frequency for this clock is 128MHz. Also according to datasheets, the typical pin...
Monday, 16 December 2013 - 09:52
Headache due to Atmel answers
I asked a question from Atmel support: Quote:Accoring to ATXMEGA128A1 datasheet, SDRAM start address (base address) can be from 0x4000. Also the maximum SDRAM size is written 16MB...
Thursday, 8 August 2013 - 12:44
My XMEGA based electronic organ
I have designed and implemented an electronic organ by using XMEGA microcontroller and a secondhand keyboard which is obtained from an out of service organ. 10 simultaneous notes...
Friday, 2 August 2013 - 10:58
Direct connection from 5v LCD to XMEGA
I connected a 128x64 ks108 based lcd to XMEGA with 5v supply for lcd and 3.3v for XMEGA. There is a read function in lcd library, which reads data from lcd to microcontroller....
Sunday, 25 November 2012 - 10:25
XMEGA new informations from Atmel support
I asked about slew rate value for XMEGA port pins. The Atmel answer contains some new information, which is not present in XMEGA manuals and datasheets. Quote:The effect of the...
Tuesday, 5 July 2011 - 08:09
When does atmel modify XMEGA document errors?
I am writing a book on XMEGA and atmel documents are the only reference for me. These documents are full of mistakes and errors and I have reported tens of errors to atmel. But...
Sunday, 19 June 2011 - 14:07
IR2175 current sensor
The IR2175 is a monolithic current sensing IC designed for motor drive applications. The output is a pwm signal and current measurement can be done from pwm duty cycle calculation...
Saturday, 30 April 2011 - 09:32
Major bug found in XMEGA waveform generation
I found a hardware bug in XMEGA timer, When I was writing a sample code for activation of single slope PWM. I wrote to atmel: Quote:There is problem in single slope PWM waveform...
Thursday, 24 March 2011 - 11:19

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