BQ27Z561-R2: What is the difference between HW version A1 with HW version A2?

Hi Statham,

Please refer to the change list here:  

A watchdog timeout was also implemented where if SCL is held low for a timeout period, the i2c will timeout. This is to prevent an indefinite clock-stretch. 

Thanks,

Rushi

Statham,

That document captures the FW differences. When a device goes from say -Rx to -Rx+1, that's typically FW upgrades or bug fixes.

That's why I mentioned the i2c change cause it appears that wasn't captured there. 

Thanks,

Rushi

Statham,

One way to identify is from the box label that the units came in. It will have die rev on there. Another way is section 13.8.3 in the technical reference manual, this command will give the HW information: "AltManufacturerAccess() 0x0003 Hardware Version".

Thanks,

Rushi

Statham,

I'll try to see if there is an example for the command, but the TRM is the best reference. For the package labels, they typically come with the material name, quantity, Lot #, and manufacturing info (ASO, ACO, CCO, CSO). There is "Rev: " above the manufacturing info. Below is an example shipping label, not an actual one. 

Thanks,

Rushi