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BQ27220: about BQ27220 config file and program

user6503572
Prodigy 50 points
Part Number: BQ27220
Other Parts Discussed in Thread: BQSTUDIO, GAUGEPARCAL

There are some query during using BQ27220,1) how to make a config file for program otp?  2) program BQ27220 OTP need 7.4v voltage ,but I don't know  which pin  be connect to? If the BQ27220's iic connect to main MCU's iic , during program BQ27220 there some damage whit main MCU?  Can you help me? very thanks!

  • 0
    TI__Mastermind 19195 points

    Hi,

    1.You can refer to this app note: 

    2. Please follow the EVM user guide: 

    Best Regards,

  • 0 in reply to Nick Brylski
    Prodigy 50 points

    Dear sir, very thanks for you reply,about BQSTUDIO there are some question ask for advice:
    1)in registers section :not need configuration all the parameter ,is it right?
    2)in data memory section:,there are include:calibration(xx),configuration(xx), gas ganging(xx) item, according SLUUBD4 doc "data memory summary" fill all default value in those corresponding item ,is it right?
    3)in calibration section:according SLUUBF5 doc demand to calibration the "cc offset","board offset","temperature","current","votage"
    et. item is it right?
    4) after above operate, implement "golden image" section to create a OTP program file  (*.ot.fs.) for program into BQ27220  OTP ,is it right?
    it is very expect for your reply.

  • 0 in reply to user6503572
    TI__Expert 3030 points

    Hi,

    1. Registers show the status of the device, no need to configure.

    2. Actual values in the application should be used for data memory, not default value.

    3. Correct, you can use the Calibration in bqStudio to perform calibration.

    4. You can use GPC tool GAUGEPARCAL to generate custom parameters for OTP

    Best Regards,

    Abraham

  • 0 in reply to Abraham Rashid
    Prodigy 50 points

    Hi
     it is very most fruitful to received your reply,continue above topic
    2) if I need make a *.ot.fs file for OTP program only, I only configuration BQSTUDIO data memory section "calibration(present otp)","configuration(present otp)"and gas "gauging(present otp)" those three type parameter, not need care other calibration,configuration,gas gauging,calibration(rom default),configuration(rom default),gas gauging(rom default) those six type parameter,is it right?
    4) what the difference generate the *.ot.fs file using BQSTUDIO and  GPC tool?

    very thanks!