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UDG−04101
Active Mode
COM low for 18
seconds?
No
Ship
enabled?
Yes
No
Yes
No
Yes
Ship Mode
COM
pulled high?
Sleep Mode
COM
pulled high?
below DMF
threshold?
43.6 minute
wake?
Yes
Device enters active
mode for 18 seconds
No
Yes
No
No
Yes
V
SR
Active Mode
bq27010 , bq27210
SLUS707B – APRIL 2006 – REVISED JANUARY 2007
Figure 5. Power Mode Flow Chart
During normal operation, the device is in active mode, which corresponds to the highest power consumption.
Normal gas gauging is performed in this mode. If system requirements mandate that bqJUNIOR should not
enter Sleep or Ship modes, then an external pullup resistor from V
CC
to keep HDQ or CLK and DTA at a logic 1
is required on the bqJUNIOR side of the system. The resistor value chosen should be small enough to force a
logic 1 even with the internal pulldown current and any external ESD protection circuitry loading.
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