STC3117 get Gas gauge charge data

[shamiraharon]

Hi,
I'm using the STC3100 chip to get the coulomb used from the battery, using the REG_CHARGE_LOW registers,

on the new board, I want to move to STC3117, but I don't see this register,
Does anyone know how I can get this value?

Thanks

Shamir

[Andrew Neil]

What about REG_SOC ?

[shamiraharon]

As I understand, this is % of the battery,
I can't get the "used" coulomb value.

[Andrew Neil]

But you can easily work that out from the battery % , surely?

[SMarie]

Hi,

In the doc : 6.2 STC3117 gas gauge architecture > 6.2.1 Coulomb counter.

You can see that the coulomb value is in the REG_COUNTER register if you set the VMODE bit to 0 in the REG_MODE register.

You'll also find more info in this chapter.

[shamiraharon]

Hi,
Thanks for the replay,
I'm not sure I can get the coulomb reading in this mode,
it seems that I need to set the battery information in the chip, and the chip calculates the % which I get.
this is not what I need,

but, because of the footprint of the device, which requires the use of blind VIA which increases the board price - I will not use this chip, and use the SCT3100.

thanks a lot for the answers and help

Shamir