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NSB-7
System Module
PAMS Technical Documentation
Page 18
ã
Nokia Mobile Phones Ltd.
Issue 1 06/00
tacts so that there is a delay between battery removal detection and supply power off.
Figure 7: SIMCardDetX Detection Levels
Battery Temperature
The battery temperature is measured with a NTC inside the battery pack. The BTEMP line
inside transceiver has a 100k pull-up to VREF. The MCU can calculate the battery tem-
perature by reading the BTEMP line DC-voltage level with a CCONT (N100) A/D-con-
verter.
Pin
Name
Min
Typ
Max
Unit
Notes
3
BTEMP
0
1.4
V
Battery temperature indication 100k pull-up
resistor to VREF in phone
Battery package has NTC pull-down resistor: 47k
+/-5%@+25C, B=4050 +/-3%
2.1
5
10
3
20
V
ms
Phone power up by battery (input)
Power up pulse width
47
Kohm
Service battery value
-5
5
%
100k pull-up resistor tolerance
0.55 _ 0.05 Vcc
0.85 _ 0.05 Vcc
Vcc
GND
SigOut
SIMCARDDETX
Содержание NSB-7 Series
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