BitsyXb - User Manual
52 110118-0001A
5.4.2 Automotive System
This system connects the BitsyXb directly to the vehicle battery, but polls a sense line on the
ignition to put the system to sleep when the vehicle is turned off.
Vehicle
battery
(~12V)
Transient/spike
suppression
0-3.3V
VBatt_Pos
digital input
12V ignition
8V trip
Vehicle ground
Ground
5.4.3 Line Power and Battery with External Charger
You may choose to use an off-board battery charger for a specific battery chemistry or voltage.
The following diagram illustrates one way to include a charger on your own personality board.
Personality Board BitsyXb
VBatt_Pos
Ground
Ground
DCIN_Pos
DC "Line" power
Charger
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