Changes between Version 18 and Version 19 of TBR/BSP/Mbx860_002

Timestamp:

12/17/11 02:55:47 (13 years ago)

Author:

Ivaylo

Comment:

/* Battery */

TBR/BSP/Mbx860_002

@@ -51 +51 @@
 = Battery =
 
-=  =Block diagram==
+
+The on-board backup power source for the NVRAM is a Sanyo CR14250SE lithium battery which is socketed for easy removal and replacement. A small capacitor is provided to allow the battery to be quickly replaced without data loss.
+
+The lifetime of the battery is very dependent on the ambient temperature of the board and the power-on duty cycle. At 70°C, the
+worst-case elapsed time for battery protection is 7 years. Battery warning time is 24 hours minimum. At lower ambient temperatures
+the backup time is greatly extended.
+
+When a board is stored, the battery should be disconnected to prolong battery life. This is especially important at high ambient
+temperatures. The MBX board is shipped with the on-board battery disconnected (i.e., with a jumper installed across J1 pins 2 and 3). If
+you intend to use the battery as a backup power source, it is necessary to reconfigure the jumpers on J1 and J2 before installing
+the board. Refer to Backup Power Configuration and Backup Power Conditioning in Chapter 1 for the jumper configurations to use.
+= Block diagram =
 
 
 [wiki:File:diagram12.png File:diagram12.png]
-
-==References==
+=  =References==
 
 http://www.emersonnetworkpower.com/en-US/Products/EmbeddedComputing/Documents/DocumentationArchive/TechnicalDocumentation/02/mbxapg.pdf