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Nokia N96 Service Manual: Power Key

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User manual - 396 pages
Service manual - 22 pages
User manual - 189 pages

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RM-247
System Module
Voltage limits
Parameter
VMSTR
Master reset threshold (N2200)
VMSTR+
Threshold for charging, rising (N2300)
VMSTR-
Threshold for charging, falling (N2300)
VCOFF+
Hardware cutoff (rising)
VCOFF-
Hardware cutoff (falling)
SWCOFF
SW cutoff limit
The master reset threshold controls the internal reset of EM ASICs. If battery voltage is above VMSTR, N2300
charging control logic is alive. Also, RTC is active and supplied from the main battery. Above VMSTR, N2300
allows the system to be powered on although this may not succeed due to voltage drops during start up. SW
can also consider battery voltage too low for operation and power down the system.

Power key

The system boots up, when power key is pressed (adequate battery voltage, VBAT, present).
Power down can be initiated by pressing the power key again (the system is powered down with the aid of
SW). Power key is connected to EM ASIC N2200 via PWRONX signal.
Issue 1
Description
COMPANY CONFIDENTIAL
Copyright © 2008 Nokia. All rights reserved.
Value
2.2V (typ.)
2.1V (typ.)
1.9V (typ.)
2.9V (typ.)
2.6V (typ.)
~3.25V (defined
by SW)
Page 7 –7

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   Also See for Nokia N96

This manual also for:

L3, L4

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