BQ28Z610: Manufacturer Date

Kathleen Gayo

Part Number: BQ28Z610
Other Parts Discussed in Thread: BQSTUDIO

Hi,

I've been trying to read the Manufacturer date of this fuel gauge. Based on SLUUA65C, ManufacturerDate() value in the following format:Day + Month*32 + (Year–1980) * 512 with the default value of 01/01/80 but the register returns an unsigned integer value from 0 to 65536. I'm trying to read this data via I2C line between the fuel gauge and an MCU. I am not certain how to go about the calculations. Are there any more notes on this? The technical reference doesn't have much guide with fuel gauge communication via MCU.

Thanks,

Kat

over 6 years ago

0 Onyx Ahiakwo over 6 years ago

TI__Guru* 76230 points

Hi Kat,
See app note below on gauge communication. I hope this helps.
www.ti.com/.../getliterature.tsp

thanks
Onyx

0 Kathleen Gayo over 6 years ago in reply to Onyx Ahiakwo

Intellectual 620 points

Hi,

The gauge communication app note does not have anything documented about Manufacturer dates.

0 Onyx Ahiakwo over 6 years ago in reply to Kathleen Gayo

TI__Guru* 76230 points

hi Kathleen
This parameter is something that you modify. It is not the manufacture date of the IC.

When you read the default value from the device, what value do you get? Your post doesn't indicate that.

thanks
Onyx

0 Kathleen Gayo over 6 years ago in reply to Onyx Ahiakwo

Intellectual 620 points

Hi Onyx,

I am aware that the manufacture date is is W/R and I may not have been clear on my intent. I have a battery pack with BQ28Z610 which was manufactured and programmed by the engineers in the manufacturing. The company I work for had been hired recently to program an MCU and communicate with the battery pack fuel gauge thus I do not need to write the manufacturer date as it was already written by the engineers before. I just need to communicate with the fuel gauge and read the data which will then be displayed in an LCD.

Thanks,

Kat

0 Batt over 6 years ago in reply to Kathleen Gayo

TI__Mastermind 42535 points

Hi Kathleen,

While that document doesn't have information on the manufacturer date, you can use that to infer the method of access, then use the trm or bqstudio to find out the register address and read back the data. The formula mentioned there is correct.

For eg 2019-12-01 would be (512*39+12*32+1) = 20353

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BQ28Z610: Manufacturer Date