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2: Power
2.1 Power Supply
The host provides power to the AirPrime HL7802 through multiple power and ground pins.
The host must provide safe and continuous power at all times; the module does not have
an independent power supply, or protection circuits to guard against electrical issues.
For detailed pinout and voltage / current requirements of this module, see the AirPrime
HL7802 Product Technical Specification.
2.2 Module Power Modes
Table 2-1
Table 2-1: Supported Power Modes
Power
Mode
OFF
Module is off (no power to the system)
Module is powered
Running
RF power is on only during Rx/Tx activity
Basic low power mode
Sleep
Possible modem state—Stack OFF, DRX,
eDRX, PSM, No service
Intermediate low power mode
Lite
Possible modem state—Stack OFF, eDRX,
Hibernate
PSM, No service
Lowest power mode
Hibernate
Possible modem state—Stack OFF, eDRX, PSM
a. Subject to device configuration.
Rev. 1 June 2020
summarizes the AirPrime HL7802 module's power modes.
Description
6
Wake-up Events
Apply power
n/a
UART1_DTR signal transition to active
•
WAKE_UP signal transition to active
•
UART1_DTR signal transition to active
•
WAKE_UP signal transition to active
•
WAKE_UP signal transition to active
•
2
a
41113745
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