2020-03-26 08:46 AM
Hi, I have TESEO-LIV3F , I want to power the GPS when it's needed. I have backup battery connect to VBAT because i want to have hot start .
1- In my case how much current draw from the GPS when only VBAT powered? It says in data sheet 6uA as hardware standby, Is it the case when I just power VBAT?
2- what is the difference between hardware standby and software standby? and why software standby current is 12uA?
Thanks
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2020-03-30 11:02 PM
2020-03-26 09:01 AM
Hi
> In my case how much current draw from the GPS when only VBAT powered? It says in data sheet 6uA as hardware standby, Is it the case when I just power VBAT?
Yes. this is exactly the HW Standby
> what is the difference between hardware standby and software standby? and why software standby current is 12uA?
In case lo SW-Standby VCC and VCC_IO remain applied. This is the case when GNSS-firmware drivers the low power enter/exit procedure (i.e.: Periodic Standby or when you trigger the commands PSTMFORCESTANDBY)
Hope this helps
Regards
Francesco
2020-03-26 09:15 AM
Thank you fro your answer just to make it clear and correct me please if i am wrong. while VCC and VCC_IO is off and backup battery is connect to VBAT, The current will be 6uA and I will get hot start when I power the GPS again. Is that correct?
2020-03-30 11:02 PM
Hi
> Is that correct?
Yes. it's correct.
Regards
Francesco