JAJSJE2A july 2020 – april 2023 BQ21062
PRODUCTION DATA
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The MR input has three main functions in the BQ21062. First, it serves as a means to wake the device from Ship Mode. Second, it serves as a short button press detector, sending an interrupt to the host when the button driving the MR pin has been pressed for a given period of time. This allows the implementation of different functions in the end application such as menu selection and control. And finally it serves as a means to get the BQ21062 to reset the system by performing a power cycle (shut down PMID and automatically powering it back on) or go to Ship Mode after detecting a long button press. In order for the MR to be functional, the battery voltage VBAT must be above the VBATUVLO level. The timing for the short and long button press duration is programmable through I2C for added flexibility. Note that if a specific timer duration is changed through I2C while that timer is active and has not expired, the new programmed value will be ignored until the timer expires and/or is reset by MR. The MR input has an internal pull-up to BAT.