Arduino mini, mini pro, and lillypad

Other Hardware 3rd Party Boards
1

I could really find a datasheet on the mini, mini pro, and lillypad to find out exactly what voltage regulator they are using, but from this website, it seems that the voltage regulator is at 3.3V "MCP1702" regulator. The Lillypad runs at 8MHz, but the Mini and Mini Pro w/ the ATMEGA 328 runs at 16MHz.

Is my information about the 3.3V regulator wrong in regards to the mini and mini pro? I thought it's not stable to run the ATMEGA328 at 16MHz on only 3.3V - you need a higher voltage?

Thanks,
Eric

2

YOUR INFORMATION IS WRONG . ALL 16MhZ Pro-Minis are 5V. I believe that applies to the others as well.

3

It didn't check it, but as far as I know it is like this:
The Lilypad uses 8MHz and is designed to be used with a battery.
The Arduino Pro is in two versions, one 5V 16MHz version and one 3.3V 8MHz version.
The Pro Mini is also in two versions, 5V 16MHz and 3.3V 8MHz, both use an external crystal/resonator.
Arduino Mini is 5V 16MHz.

http://arduino.cc/en/Main/arduinoBoardLilyPad

So far, there no conflict, no problem at all.

There is an Arduino compatible board that has a switch from 3.3V and 5V and runs at 16MHz. That is not within the specifications, but it will run (hopefully). A rule of thumb is that most ATmega chips will run up to 12MHz at 3.3V.

4

IT 'S THE Sainsmart UNO R3. I have one. Nice feature.

5

ALL 16MhZ Pro-Minis are 5V. I believe that applies to the others as well.

Yup they have to be 5v because a certain minimum voltage level is needed to workout the ATmega @ certain oscillator frequency, IN addition to this its also a bit of overclocking if techincally seen.

MHz  Volts
 4    1.80
 5    1.95
 6    2.10
 7    2.25
 8    2.40
 9    2.55
10    2.70
11    2.88
12    3.06
13    3.24
14    3.42
15    3.60
16    3.78
17    3.96
18    4.14
19    4.32
20    4.50

courtesy Nick Gammon