BQ20Z45-R1: Accessing the lifetime data

Hi Carlo,

You can access LifetimeData register by going to the Pro tab in bqEVSW and performing an SMB read block with command 0x74. Please note that this product is not recommended for new designs and is only in production for existing customers.

Best,

Jessica

Hello Jessica,

Thank you for the information. Please guide on how to interpret the output from PF Flags 1, PF Flags 2, and PF Safety Status?

For example, one device is showing PF Flags 1=7008, PF Safety Status=8080, PF Flags 2=8. What do these codes mean?

Regards,
Carlo

Carlo,

the command 0x73 returns a block of info. This can be found in the TRM. The first two bytes would be lifetime max temp followed by lifetime min temp an so on..

Using the bqStudio you can just do a read-all on the dataflash screen and the information is visible on the "SystemData" tab. The command is just a way to access the data via the SMB port

The PF flags are a bit field to show you which PF has been triggered. Again this is easier viewed in EVSW on the Dataflash PF Status Screen. PF Status is a snapshot of how the registers looked when the PF occured.

Thanks,

Eric Vos

Thanks,

Eric Vos

Hello Eric,

Thank you for the details. On the other hand, how can we interpret the codes in PF flags 1, PF flags 2, and PF Safety Status?
Going back to the previous example: PF Flags 1=7008, PF Safety Status=8080, PF Flags 2=8. What does 7008 indicate? Does each character or value in the sequence have a specific purpose?

Regards,
Carlo