ZHCSLW6A december 2020 – august 2023 BQ25157
PRODUCTION DATA
The MR input has three main functions in the BQ25157. 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 BQ25157 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. The timing for the short and long button press duration is programmable through I2C for added flexibility and allow system designers to customize the end user experience of a specific application. 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.