NSB-7
System Module
PAMS Technical Documentation
Page 12
ã
Nokia Mobile Phones Ltd.
Issue 1 06/00
SIM card connector
The SIM card connector is located on the engine beside the battery pack.
RTC backup battery
The RTC block in CCONT needs a power backup to keep the clock running when the
phone battery is disconnected. The backup power is supplied from a rechargable Li-ion
battery that can keep the clock running ten minutes minimum. The backup battery is
charged from the main battery through CHAPS.
BTEMP
0
1.4
V
Battery temperature indication
Phone has a 100k (+/-5%) pull-up resistor,
Battery package has a NTC pull-down
resistor: 47k +/-5%@+25C, B=4050 +/-
3%
2.1
5
10
3
30
V
ms
Phone power up by battery (input)
Power up pulse width
0
1
kohm
Local mode initialization (in production)
BGND
0
0
V
Battery ground
Pin
Name
Parameter
Min
Typ
Max
Unit
Notes
4
GND
GND
0
0
V
Ground
3, 5
VSIM
5V SIM Card
3V SIM Card
4.8
2.8
5.0
3.0
5.2
3.2
V
Supply voltage
6
DATA
5V Vin/Vout
3V Vin/Vout
4.0
0
2.8
0
“1”
“0”
“1”
“0”
VSIM
0.5
VSIM
0.5
V
SIM data
Trise/Tfall max 1us
2
SIMRST
5V SIM Card
3V SIM Card
4.0
2.8
“1”
“1”
VSIM
VSIM
V
SIM reset
1
SIMCLK
Frequency
Trise/Tfall
3.25
25
MHz
ns
SIM clock
Signal
Parameter
Min
Typ
Max
Unit
Notes
VBACK
Backup battery charging
from CHAPS
3.02
3.15
3.28
V
Backup battery charging
from CHAPS
100
200
500
uA
VBACK
Backup battery supply to
CCONT
2
3.28
V
Name
Min
Typ
Max
Unit
Notes
Содержание NSB-7 Series
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