SLDS187A October 2018 – December 2019 TPS65216
In ACTIVE state, the nWAKEUP pin is pulled low for five 32-kHz clock cycles (approximately 150 µs) whenever a falling edge on the PB input is detected. This allows the host processor to wakeup from DEEP SLEEP mode of operation. It is recommended to pull-up the nWAKEUP pin to a I/O power supply through a pull-up resistor. For nWAKEUP to function properly in the SUSPEND state, this pin must be pulled up to a power supply that is disconnected from the sequencer before entering SUSPEND. .