Hello,
We are working on Airprime module WP8548, with a RTC coin cell of 3V, flashed with release 12.2.
We absolutely need to set custom parameters in RTC charger.
In the datasheet rev12, on page 65 note b and c, it is said that the RTC charger voltage is programmable 2.5 / 3.0 / 3.1 / 3.2 V and also resistor setting can be 800 / 1200 / 1700 / 2100
In AT Command Reference rev 2 , page 141, it is said that “[Charging voltage] can be configured using AT!MVCOIN” but this AT command is not detailed anywhere else in the document and we didn’t succeed to use it.
QUESTIONS ARE :
- what are the default values of RTC charger ?
- can you provide detailed description of the AT commands to change these parameters ?
Thank you.