maemo.org - Talk - View Single Post - Adata SD card uses extra battery power

DJArty	2008-08-29 , 18:14
Posts: 37 \| Thanked: 33 times \| Joined on Feb 2008 @ Ukraine, Kharkiv	#4

Look at Bugtrack https://bugs.maemo.org/show_bug.cgi?id=1204#c75 (comment 75 from Nokiaman)

For example Transcend 8GB card requests much more power than e.g.
Kingston 8GB card (200mA vs. 25mA i.e. ~8x more, but due to steps specified
in the SD spec, in reality it could be only ~4x times more). Don't know
whether this is related to bug here though, both memory card slots
should (naturally) provide the maximum amount of power required
by the cards.

And I'm look in to Transcend SDHC card specs:

• Current Consumption
The current consumption is measured by averaging over 1 second.
‧ Before first command: Maximum 15 mA
‧ During initialization: Maximum 100 mA
‧ Operation in Default Mode: Maximum 100 mA
‧ Operation in High Speed Mode: Maximum 200 mA
‧ Operation with other functions: Maximum 500 mA.

500 mA!! Splendidly!

Thus, not every card is intended for a IT...

Last edited by DJArty; 2008-08-29 at 18:17.

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