BQ27Z758: Does BQ27Z758 ship with default firmware

Dan Harrison

Part Number: BQ27Z758
Other Parts Discussed in Thread: EV2400,

Tool/software:

I am using the BQ27Z758 is a very space constrained environment. I cannot easily provide a connection to an external EV2400. Does the BQ27Z758 ship with default firmware already installed so that I can communicate with it exclusively via my local micro? Also, is there any sort of code base available to run on an MSP430 to interface with the fuel gauges or do I have to create that from scratch?

3 days ago

0 Alan Frias 2 days ago

TI__Mastermind 25855 points

Hello,

This question has been assigned and will be reviewed when possible.

Thank you,
Alan

0 Dan Harrison 1 day ago in reply to Alan Frias

Prodigy 10 points

I ask because I am, not even seeing an ACK to my 0xAA start on the I2C bus between my micro (MSP430G2553IRHB32R) and the gauge (BQ27Z758YAHR). The only thing on the SDA / SCL lines besides these two parts are a pair of 10K pullups.

+1 Jonny 16 hours ago in reply to Dan Harrison

TI__Mastermind 24851 points

Hello,

Yes the gauge is shipped with default FW.

Regards,

Jonny.

0 Dan Harrison 12 hours ago in reply to Jonny

Prodigy 10 points

Ok. Should I assume the default FW should ACK an I2C start to addr 0xAA (0x55 + R/W bit). Any suggestions for why it wouldn't?

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BQ27Z758: Does BQ27Z758 ship with default firmware