Sierra Wireless Q2687 Manuel D’Utilisation
Wireless CPU Quik Q2687
Interfaces
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WA_ENG_Q2687_PTS_001-002
September 11, 2006
Electrical characteristics of the signal
Parameter
Minimum
Typ
Maximum
Unit
Input voltage
1.85
2.5
V
Input current
consumption*
3.0 3.3
3.6
µA
Output voltage
2.40
2.45
2.50
V
Output current
2
mA
*
Provided by an RTC back-up battery when Wireless CPU power supply is OFF (VBATT = 0V).
3.23
FLASH-LED Signal
FLASH-LED is an open drain output. An LED and a resistor may be directly connected
between this output and VBATT.
between this output and VBATT.
When the Q2687 Wireless CPU is OFF, if 2.8V < VBATT < 3.2V and a charger is
connected on CHG-IN inputs, this output flashes (100 ms ON, 900 ms OFF) to
connected on CHG-IN inputs, this output flashes (100 ms ON, 900 ms OFF) to
indicate the pre-charging phase of the battery.
When the Q2687 Wireless CPU is ON, this output is used to indicate network status.