Telit Wireless Solutions SL869T3-I, Руководство пользователя

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SL869T3-I Product User Guide
1VV0301546 Rev. 3
Page 18 of 68 2021-03-31
Entry: Issue a LOWPOWERONOFF command to enter the Active Cyclic STANDBY mode
for a specified amount of time. NMEA output is not transmitted, but NMEA commands are
processed.
The module enters a reduced current (higher than low current) state until the specified
time expires.
Then the module awakens, performs a HOT start and any necessary constellation
housekeeping tasks, and then automatically re-enters the reduced current state.
Exit: This process is repeated until this mode is disabled by another command or nRESET
is asserted.
Asserting WAKEUP has no effect for this command.
4.13.1.3. Commanded Passive Cyclic Standby Mode
See
Table 4-1 Power Management Modes
for power distribution scheme.
Entry: Issue a LOWPOWERONOFF command to enter the Passive Cyclic STANDBY mode
for a specified amount of time. NMEA output is not transmitted, and NMEA commands
are not processed.
The module enters a low current state until the specified time expires.
Then, the module awakens, performs a HOT start (assuming that the required data is
available) and any necessary constellation housekeeping tasks and then automatically
re-enters the low current state.
Exit: This process is repeated until this mode is disabled by another command, asserting
nRESET, or asserting WAKEUP.
4.13.2. SLEEP Modes
Vcc is not present and Vbatt is maintained. These modes provide the maximum power
saving but require more time to restore normal operation.
See section
8.5.3 DC Power Requirements
for power consumptions.
The module will not be operating, and it will not provide output nor respond to commands
when in the SLEEP mode. There are two possible situations, SLEEP and DEEP SLEEP.
4.13.2.1. SLEEP Mode (Vcc has not been applied)
Entry: Vbatt is applied, but Vcc has not yet been applied.
Exit: Apply Vcc.