Осталось только узнать как со временем характеристики датчика уплывают.
Могу добавить,что с течением времени эксплуатации устройства за 2 года, он уплывает на -3,5 градуса, это в 430F135 из практики. - sasa_c(30.09.2008 12:52)
Запрос все равно написал, пусть исправят и в остальных даташитах.
Цитата
Question #3.
There is the following information in the Datasheet for 430x241x, 430x261x (slas541a, page 29, note 1): "A maximum difference of 0.3 V between AVCC and DVCC can be tolerated during power-up.".
There is no such phrase in the Datasheet for MSP430x13x, 14x, 14x1 (slas272f), 15x, 16x, 16x1 (slas368e), 20x1, 20x2, 20x3 (slas491) may be in the others also. Does this mean that you can use parameter from Absolute Maximum Ratings:
Voltage applied to any pin (see Note) −0.3V to VCC+0.3V
To AVCC in these MCUs? If not, this is also inaccuracy in documentation.
The information in 2xx datasheets is correct and also applies to 1xx family. I agree that 1xx information is incomplete here – this issue is also known in our documentation team. I was recommending to include an information in User’s Manual some time ago as the effort to update all 1xx datasheets might be a too big effort.
Цитата
As such documentation inaccuracies sometimes take a lot of time from the software designers it will be useful if time which one engineer spent for looking for them and for trying to find the solutions will allow to others not to waste it again.
Thanks for the information and your recommendations. I agree that a perfect documentation can save a lot of time on customer side – and also on my side supporting the customers.
Sorry for causing inconvenience due to this incompleteness – we are really working on documentation improvements which sometimes take a while….