HL78 consumes significantly high power when UART1/USB1 is On.
Is it possible to have low power consumption while being able to send AT commands? Could we isolate I/O power domain from the base-band? OR it could be that the module is consuming significantly high power when it is running (Doing nothing).
It seems the module itself has to go to sleep mode in order to have low power consumption which means it is not possible to identify Tx/Rx power consumption for a transmitted packet.
Yes the unit draws more current when the UART and USB is on, the interfaces take current, that’s a fact on all devices.
I don’t understand how you want be able to send data to the unit without an interface being active?
BTW you aren’t going to be able to isolate a bit of current to a packet as there is all sorts of signaling around it.
Regards
Matt
UART/USB power consumtpion should not be included when measure only the module ( baseband + RF). I do not think all modules like that for example SARA-N2 and BC95-G.
The issue is even worse when the wake-up switch is turned on. It seems the module is consuming a lot of power when it is running even though UART/USB cable is not connected.
So presumably you are using a dev kit which allows you to separate out the dev kit power supply and the module supply as per the apps note? I presume this is the case given you have mentioned the wake_up switch.
Also have you read how the modes of the unit work in the application notes (links below) as the state of the unit is not linked to the state of the RF bearer as it is with the 9x05 based devices, this is to make the unit more flexible but does mean management from the application is required…
Regards
Matt