Post Reply 
Is the 12C SDK still available?
11-22-2015, 10:12 AM
Post: #14
RE: Is the 12C SDK still available?
(11-22-2015 06:31 AM)Katie Wasserman Wrote:  
Quote:Do you know this variant's MPN (if different from F2230A) and since when it is in circulation?

I don't know if the MPN has changed. The version with the SAM4L chip was likely released sometime earlier this year, maybe in the March/April time frame. Firmware has changed, of course, to support the new chip.

Thank you so much for your excellent insight information, Katie!

Do you know if this new March/April-2015 HP-12C ATSAM4LC2C based calculator uses just one CR2032 battery cell?

I ask this because assuming that the 2015 HP official adverts are correct (and I have no reason to tell otherwise), they show just two 12C current models:
- HP-12C
- HP-12C Platinum
And both are advertised in the text and in the pictures as using just one single CR2032 battery cell.

Using a single battery cell instead of paralleling two cells make sense to me for several reasons:
1.- Lower production and operation costs;
2.- From electrical point of view, paralleling batteries can result in sub-optimal operation;
3.- The new ATSAM4LC2C SoC is much less power hungry than the previous AT91SAM7L128 generation, while it can run at a faster raw clock speed, allowing to use just one battery cell and most probably enjoy the same autonomy.
- AT91SAM7L128 = 30mA@38MHz (please see page 2)
- ATSAM4LC2C = 14.69mA@48MHz (worst case scenario, please see page 49)

It seems that in this case, not only HP is doing a fine job by offering the excellent proved 12C algorithms to their customers since 1981, but it is also faster updating it with more efficient and up to date SoC h/w platforms than any other people responsible/wiling/able-to/with-the-inside-knowledge (chose as appropriate) to maintain the public domain forums and repositories (like Wikipedia) with up to date information!

Jose Mesquita member

Find all posts by this user
Quote this message in a reply
Post Reply 

Messages In This Thread
Is the 12C SDK still available? - emece67 - 11-20-2015, 09:59 PM
RE: Is the 12C SDK still available? - jebem - 11-22-2015 10:12 AM
RE: Is the 12C SDK still available? - d b - 11-25-2015, 11:52 PM
RE: Is the 12C SDK still available? - Dol - 09-06-2016, 07:11 PM

User(s) browsing this thread: 1 Guest(s)