Power On/Off Signal (Power_On_N); Pin Descriptions; Electrical Characteristics; Application Notes - Sierra Wireless AirPrime SL808 Series Product Technical Specification & Customer Design Manuallines

Product Technical Specification & Customer Design Guidelines
66 Proprietary and Confidential - Specifications subject to change

5.2 Power on/off signal (POWER_ON_N)

This signal is used to switch the AirPrime SL808X Embedded Module ON or OFF.
Table 5-2: Power signal features
Feature
Purpose Power on/off
Simulates a power button.
•
Implementation Low = On
•
Digital input
•
Line should be driven only by an open-drain output from the
•
host
Level is internally pulled up to 2.6 V
•

5.2.1 Pin descriptions

Table 5-3 describes the POWER_ON_N signal pins.
See Digital I/O electrical information
and reset state definitions.
Table 5-3: ON/~OFF signal pin description
Pin Signal
POWER_ON_N
43

5.2.2 Electrical characteristics

Caution: All external signals must be inactive when the AirPrime SL808X Embedded
Module is OFF to avoid any damage when starting and to allow the embedded module to
start and stop correctly.
Refer to Table 4-2 on page 34 for basic characteristics (type, voltage).

5.2.3 Application notes

Caution: This section is under review and subject to change.
5.2.3.1 Procedure: Power on/off
To power on the modem, the host must:
1. Apply input voltage within valid range to power-supply pins. (See
page 25 for Vcc range.)
Details
on page 39 for 1V8 voltage characteristics
I/O I/O type
I CMOS
Description
Embedded module
power-on
Table 3-1 on
2400058