Battery Identification - Nokia Mobile Phones NSE-5 Series Service Manual

PAMS
Technical Documentation
SWITCH
PWM (1Hz)
SWITCH
PWM (32Hz)

Battery Identification

Different battery types are identified by a pulldown resistor inside the
battery pack. The BSI line inside transceiver has a 100k pullup to VBB.
The MCU can identify the battery by reading the BSI line DC–voltage level
with a CCONT (N100) A/D–converter.
BATTERY
Issue 1 07/99
ON OFF
BVOLT
BTEMP
BSI
R
s
BGND
Figure 10. Battery Identification
ON OFF
ON
Vibra Schematic
Vbb
100k
10k
BSI
SIMCardDetX
10n
NSE–5
System Module
ON
TRANSCEIVER
CCONT
MAD
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