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DFI write

aju
Intellectual 460 points
Other Parts Discussed in Thread: BQ27510-G3, BQ27510

Hi,

We are implementing DFI write algorithm based on SLUA449F( "Going to Production with the bq275xx") document for BQ27510-G3 chip.

So we have following queries.

1.Based on the  Figure 8 Instruction Flash First Two Row Record and Erase Flow(We can see at page number 9 of SLUA449A),After flash erase, send DFI read command 0x66 with data 0x00(Before start writing image).Our issue is that this command return fails in some attempts of DFI write. What is the reason for this?

2.Is restart is required for the device or chip after DFI write completion to work the bq27510 chip normal?

3.We have one observation is that battery state of charge is reduced to 8%-9% after DFI write. Suppose take a full charge battery(soc 100%) for DFI write.After DFI write complete, its charge reduced to 92%.Whats is the reason for this?

Please give clarification for above queries

 

Regards,

Anoop