Nokia 9000i Service Manual page 152

RAE/RAK–1N
PDA Hardware
Table 24. External Signals and Connections, Outputs
Signal Name
VSYS System voltage 3.3V
VCC5 5V for FLASH and RBUS
PWRGOOD Reset signal for CPU
VBACK Backup battery voltage to RTC
LCDVCC LCD Vcc to LCDM
LCDVEE LCD Vee to LCDM
Note 1. LCMCON = LCD module connector on PDA module
Parameter Mini-
mum
Input voltage 5.0
range of VB
Battery voltage 5.0
VB
VSYS shut- 4.9
d down
5.9
VSYS 3.135
25
159
LCDVEE 18
1.3
Page 6 – 40
Signal description
Table 25. Electrical characteristics
Typi- Max- Units
cal mum
11.0V V
7.2 8.8 V
5.0 5.1 V
6.0 6.1 V
3.3 3.465 V
100 450 mA
85 %
82 %
68 %
86 %
40 100 mV
1.4 3 mA
200 212.5 kHz
22 25 V
2 3.5 mA
75 %
250 mV
0.78 mA
330 kHz
Technical Documentation
PROCU, SIRU
PROCU
PROCU
PROCU
LCMCON /
LCDVCC
LCMCON /
LCDVEE
Notes/conditions
maximum no–harm
voltage of VB line
max voltage is during charge pulses
with cycled battery
VB for shutdown operation
VB for cancel of shutdown
tolerance over temperature and
load range
output current,
regulator I =500mA
max
efficiency at I =200mA VB=6.0V
out
efficiency at I =200mA VB=8.0V
out
efficiency at I =10mA VB=8.2V
out
efficiency at I =10mA VB=5.5V
out
output voltage ripple
supply current, no load connected
oscillator frequency
depending on temperature, typical
value at room temperature
output current,
regulator I =6mA
max
efficiency at I =2mA VB=7.2V
out
output voltage ripple
supply current, no load
operation frequency
Original, 08/96
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