STC3117 Error in Application Note

[Mick Avery]

Posted on October 31, 2017 at 01:26

There seems to be an error in either the datasheet or the applicatio note of the STC3117 gas gauge.

The error is in the bit description of the REG_MODE register, specifically the VMODE bit.

The datasheet says the following:

VMODE = 0 - mixed mode

VMODE = 1 - power saving voltage mode

The application note says the opposite:

VMODE = 1 - mixed mode

VMODE = 0 - power saving voltage mode

I've attached screenshots of the relevant sections in both the datasheet and the application note.

This first screenshot is from the datasheet.

This second screenshot is also from the datasheet, confirming the first screenshot.

This third screenshot is from the application note, contradicting the info from the datasheet from the first two screenshots.

Which document is correct?

#stc3117 #gas_gauge

[Gregory Go.]

Posted on December 13, 2017 at 22:43

Hello,

Thanks for highlighting this error.

Indeed there is a typo in the Application note.

The correct information is in the datasheet:

VMODE=0   --> Mixed mode (Voltage & Current monitoring)

VMODE=1   --> Voltage mode (Voltage monitoring only, also called Power Saving mode)