Mike Perkins
Guest
Mon Sep 19, 2011 5:14 pm
Can anyone steer me in the right direction of an article how one is
meant to determine if a SIM card is of the 1.8V, or the 3V variety?
Many thanks in advance.
--
Mike Perkins
Video Solutions Ltd
www.videosolutions.ltd.uk
Mike Perkins
Guest
Tue Sep 20, 2011 9:32 am
On 20/09/2011 10:26, Brian Drummond wrote:
Quote:
On Mon, 19 Sep 2011 18:14:22 +0100, Mike Perkins wrote:
Can anyone steer me in the right direction of an article how one is
meant to determine if a SIM card is of the 1.8V, or the 3V variety?
Many thanks in advance.
A few minutes search found this datasheet...
http://www.ti.com/lit/ds/symlink/txs02326.pdf
which says...
"Configure the SIM1 regulator to 1.8V" ...
"If there is lack of communication ... the SIM1 interface must be powered-
down and then ... configuring it to 2.95V"
I suppose it works.
- Brian
Many thanks. I had already spend far more than a few minutes searching
and believed there might have been a more subtle way of finding out,
rather than a "does it work at 1.8V, and if not, let's try at 3V"!!
--
Mike Perkins
Video Solutions Ltd
www.videosolutions.ltd.uk
Brian Drummond
Guest
Tue Sep 20, 2011 11:26 am
On Mon, 19 Sep 2011 18:14:22 +0100, Mike Perkins wrote:
Quote:
Can anyone steer me in the right direction of an article how one is
meant to determine if a SIM card is of the 1.8V, or the 3V variety?
Many thanks in advance.
A few minutes search found this datasheet...
http://www.ti.com/lit/ds/symlink/txs02326.pdf
which says...
"Configure the SIM1 regulator to 1.8V" ...
"If there is lack of communication ... the SIM1 interface must be powered-
down and then ... configuring it to 2.95V"
I suppose it works.
- Brian
