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BQ25150: MR Reset

Part Number: BQ25150

Hi Team,

in the DS on page 24 it says

The host may change the reset behavior at any time after MR going low and prior to the MR_HW_RESET timer expiring. It may
not change it however from another behavior to a HW reset (Power Cycle/Autowake) since a HW reset can be
gated by other condition requirements, such as VIN presence (controlled by MR_RESET_VIN bit), throughout the
whole duration of the button press.

Does this mean:

  • I can change the bq25150 registers while I’m in the HW reset phase(P1 pressed) at the exception of the HW reset behavior( go in ship mode after HW reset,…)?
  • Can we abort the HW reset by setting the b7-6 in register ICCTRL1(0x036) to 2b01?
  • Are the bq25150 registers set to default state after a HW reset?

Thanks foo your help!

  • Hi Stefan, 

    • Yes, you can change the BQ25150 registers while MR is pressed. You cannot change from another behavior to a HW reset (Power Cycle/Autowake) while MR is being held low.  
    • Yes, the host can abort the HW reset by setting the b7:6 in the ICCTRL1 registers to 2b01. 
    • Yes, the registers will return to default state after a HW reset. 

    Best regards, 

    Arelis G. Guerrero