I have to do a network of devices based on MCU. This network in a RS485 and the device is battery powered.
For save the battery I put the MCU into sleep mode and I want to wake the MCU up, when there's a RS485 communication to process the incoming packets and return in sleep mode.
I read the feature of many RS485 transceivers and I saw that they use a quiestent current of 1 mA.
I saw also that is possible put in sleep mode some kind of transceiver.
Is possible to put the transceiver in sleep mode and wake it up with the MCU when the RS485 line become busy?
Which kind of IC I have to use?