Functional Description
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SRAM Batteries
!
Caution
Lithium batteries incorporate inflammable materials such
as lithium and organic solvents. If lithium batteries are
mistreated or handled incorrectly, they may burst open
and ignite, possible resulting in injury and/or fire.
When dealing with lithium batteries, carefully follow the
precautions listed below in order to prevent accidents.
❏
Do not short circuit.
❏
Do not disassemble, deform, or apply excessive pressure.
❏
Do not heat or incinerate.
❏
Do not apply solder directly.
❏
Do not use different models, or new and old batteries together.
❏
Do not charge.
❏
Always check proper polarity.
The power source for the onboard SRAM is a RAYOVAC FB1225 battery
with two BR1225 type lithium cells. The battery is socketed for easy
removal and replacement. The power source for the mezzanine SRAM is
a Sanyo CR2430 battery. Small capacitors are provided so that the
batteries can be quickly replaced without data loss.
The lifetime of the batteries is very dependent on the ambient temperature
of the board and the power-on duty cycle. The lithium batteries supplied
on the controller and on the SRAM mezzanine module should provide at
least two years of backup time with the board powered off and with an
ambient temperature of 40
°
C. If the power-on duty cycle is 50% (the board
is powered on half of the time), the battery lifetime is four years. At lower
ambient temperatures, the backup time is significantly longer and may
approach the shelf life of the battery.
Содержание MVME162LX 200 Series
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Страница 66: ...1 52 Computer Group Literature Center Web Site Board Level Hardware Description 1 ...
Страница 84: ...2 18 Computer Group Literature Center Web Site Hardware Preparation and Installation 2 ...
Страница 108: ...3 24 Computer Group Literature Center Web Site Debugger General Information 3 ...
Страница 156: ...IOT Command Parameters for Supported Floppy Types B 6 Computer Group Literature Center Web Site B ...
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Страница 164: ...Ethernet Interconnections E 2 Computer Group Literature Center Web Site E ...
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