1 Dec
2018
1 Dec
'18
2:59 p.m.
I'm not sure what the 'B' in the middle means (silicon rev?), but the
DS12885 has been around for decades. I use them the JR-IDE project.
-Alan
On 2018-12-01 17:47, Maciej W. Rozycki via cctalk wrote:
On Tue, 27 Nov 2018, systems_glitch via cctalk wrote:
I probably need to do a writeup on fully potted
parts, like the 48T59
and
DS1287.
See a photo documentary here:
<ftp://ftp.linux-mips.org/pub/linux/mips/people/macro/ds1287/> for my
proposal of a DS1287 rework.
I actually had a nasty surprise trying to rework a DS1287A, with a
date
code indicating a clearly faked marking. After removing the integrated
coin cell the marking on the embedded IC revealed showed it wasn't even
a
DS1287A originally as the IC was a DS12B885. This is a part I haven't
heard of existing, so I enquired Maxim, but they had no clue about it.
I
suspect the DS12B885 was the core of the DS12B887 (wired differently
from
both DS12887 and DS12887A), and the DS12B885 has never been marketed as
a
part on its own.
Maciej