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re-compiling code took sleep I from 2.5ua to 120ua...
ka7ehk wrote:Put a diagnostic signal on a pin that is present when it is not sleeping. You should be able to tell from that if it is sleeping or not. Jim I'll try to add that in...
Wednesday, 27 November 2013 - 06:29
re-compiling code took sleep I from 2.5ua to 120ua...
kk6gm wrote:This is a really good argument for using version control, so you could go back and check the differences in the output files. Not to beat up on you, but you broke an...
Wednesday, 27 November 2013 - 06:18
32K crystal running slow...
OK - I got some 12pf crystals (Abracon ABS25-32.768KHz-1-T). First I tested it again without any load caps on my 6pf crystal, and measured it to be about 158 seconds/month slow....
Tuesday, 26 November 2013 - 23:59
32K crystal running slow...
theusch wrote:Now we are getting down to sample variation...Does the same thing happen with more than one crystal (of the same type etc.)? Does the same thing happen with more...
Friday, 22 November 2013 - 14:02
32K crystal running slow...
bobgardner wrote:Go get a pf trimmer cap out of your local ham buddies junk box. Hook up the freq meter. Turn the trimmer until the freq is correct. Its Miller Time. Bob - the...
Friday, 22 November 2013 - 13:59
32K crystal running slow...
LDEVRIES wrote:Quote:I am looking at the actual 32KHz signal coming off of the crystal, so it is very unlikely that it is a software glitch (ie off by one). My thought on that...
Thursday, 21 November 2013 - 01:40
32K crystal running slow...
Who-me wrote:nleahcim wrote: In the meantime, if anybody has any suggestions as to why this is happening - I'd love to hear them. Crystals are tuned for a specific load value,...
Thursday, 21 November 2013 - 01:32
32K crystal running slow...
theusch wrote:I'm a bit late to the game. But first, I'd go to a migration app note that has a discussion of watch crystals. E.g. http://www.atmel.com/Images/doc8... In...
Wednesday, 20 November 2013 - 20:38
32K crystal running slow...
Who-me wrote:nleahcim wrote:Who-me wrote: You are ~58ppm too slow, or one part in 17280. You can change the Divider to manage coarse trim, and then fine tune via caps from there...
Wednesday, 20 November 2013 - 16:27
32K crystal running slow...
Jepael wrote:Have you actually measured the frequency and with what? Also, how are you using the frequency? Is it the main clock or just for the async timer? If you are building...
Tuesday, 19 November 2013 - 20:53
32K crystal running slow...
Who-me wrote:nleahcim wrote:- about 150 seconds/month slow without any capacitors on either line. It initially was about 250 seconds/month with a 10pf cap on each line. That...
Tuesday, 19 November 2013 - 18:36
32K crystal running slow...
meslomp wrote:it might be that it will not become any better... simple math: 1 mnth(30days)= 720Hours = 43200minutes = 2592000 seconds 1ppm of that figure is 2,592 seconds. so 150...
Tuesday, 19 November 2013 - 18:34

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