Power And Power Management; Determining The Features You Need - Applied Data Systems Bitsy Plus User Manual

5 Power and Power Management

Power management is especially critical in portable and handheld applications where battery
power is at a premium. The Bitsy Plus includes advanced power management features, including
the low power StrongARM CPU, partitioned power distribution and ability to run from several
types of DC power inputs. The Bitsy Plus can also operate as a conventional single-board
computer, taking advantage of the inherently low power consumption of the system.
This chapter describes the architecture of the Bitsy Plus power supply, factors affecting power
consumption and reference designs to get you started. For information about how much power the
Bitsy Plus consumes, consult the electrical specifications in section 6.2.5.
5.1

Determining the Features You Need

Not all designs with the Bitsy Plus need to be optimized for lowest power consumption. Consider
the following types of typical system configurations to determine the topics of interest to your
application.
ADS document # 110114-1001A
Relevant Topics
Features Required
System is On All the Time
System Power Supply Turned
Off to Shut Down System
System Should "Turn Off"
when not in use
Battery-Operated, Minimum
Power Consumption
"Pulled-Plug"/Brownout
Protection
Must Preserve Time and Date
Under All Circumstances
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