NSW-5
System Module UT5U
PAMS Technical Documentation
Page 21
Issue 1 10/00
Nokia Mobile Phones Ltd.
Empty battery
VCHAR
VR1, VBB, VR6,
RFC (VCXO)
COBBACLK
PURX
RFCEN
t1
t2
t3
RFCSETTLED
VBAT > 3.0 V
CCONTINT
SLCLK
V2V
Before battery voltage voltage rises over 3.0 V CHAPS gives an initial
charge (with limited current) to the battery. After battery voltage reaches
that voltage limit the power up procedure is as described in the previous
chapters.
Anyway, if the standard charger is connected and power–up requested
from the power button, the current consumption is kept in the minimum in
the beginning because the charger output current is rather low and the
battery voltage is on the minimum limit. Thus, the phone receiver parts
and the user interface lights are not powered up immediately, but after a
short delay.
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