DS12887 pcb substitute with battery
alan at alanlee.org
alan at alanlee.org
Tue Nov 21 20:54:24 CST 2017
What are you talking about?
https://www.digikey.com/product-detail/en/maxim-integrated/DS12885/DS12885-ND/1196867
-Alan
On 2017-11-21 14:16, Maciej W. Rozycki via cctech wrote:
> On Mon, 13 Nov 2017, systems_glitch wrote:
>
>> Good stuff! I recently designed a module to build new DS1287 and
>> DS12887
>> modules from the bare DS1285 and DS12885 ICs:
>>
>> https://imgur.com/a/cgKm5
>
> Nice!
>
> That wouldn't solve my problem though, given the apparent
> unavailability
> of DS1285 chips (in any packaging, whether surplus or used), compared
> with
> the ubiquity of used DS1287 and DS1287A ones, possibly because they
> were
> often socketed. Using my systems as a reference for the Linux port I
> want
> to avoid any deviation from their original specification so that
> software
> does not make use of it by chance.
>
> As to the DS12887 and DS12887A chips -- these are still manufactured
> and
> readily available, as someone mentioned a while ago, although a bit
> highly
> priced, so either reworking an old one or using your alternative does
> help
> cutting cost, which may especially matter if you need more than just a
> few.
>
> Maciej
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