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2. Power Modes
The MTX-Java-IoT devices ordered with Ultra Low Power (U) or Low Power (L) options can enter into two
reduced consumption power modes depending the option: Ultra Low Power or Low Power.
2.1 Ultra Low Power mode
In this mode, all the board devices are disconnected from the power supply, except a little portion of
digital logic and a RTC that allows the modem to exit from this mode and go back into the normal mode.
In this mode the MTX-Java-IoT only requires 2.5µA to supply the internal logic.
When an ULP modem enters in Ultra Low Power mode, you can wake up it again in several ways:
• By optoisolated inputs (see section Interface Description 1.3 (Modes with RJ11 connector)):
there are an active-high input and another active-low input allowing the modem to power up
again
• By the RTC alarm: please read the MTX-Java-IoT Family Software Manual to configure the RTC
alarms
It is possible to know if the modem has been woken up by inputs or the RTC alarm by reading the status
latches.
Devices ordered with Ultra Low Power Controller option (U) also can enter in Low Power Mode which is
explained in section Operation 2.2 (Low Power Mode).
To learn how to configure and enter into the Ultra Low Power mode please read the MTX-Java-IoT Family
Software Manual.
2.2 Low Power mode
In this mode, all the board devices are disconnected from the power supply, except the internal
coprocessor, that allows the modem to exit from this mode and go back into the normal mode. In this
mode the MTX-Java-IoT requires 100µA to supply the internal logic.
When a LP modem enters in Low Power mode, the device will wake up again when it receive a character
sent from any of the serial interfaces (RS232 or RS485)
To learn how to configure and enter into the Low Power mode please read the MTX-Java-IoT Family
Software Manual.
MTX-Java-IoT | 2018/2
MTX © by MATRIX ELECTRONICA S.L.U.
SUPPORT: iotsupport@mtxm2m.com | SALES: info@mtxm2m.com |
mtxm2m.com
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