ZHCS688I November 2011 – March 2018 TPS65217
PRODUCTION DATA.
The nWAKEUP pin is an open-drain, active-low output that is used to signal a wakeup event to the system host. This pin is pulled low whenever the device is in the OFF or SLEEP state and detects a wakeup event as described in the Device Functional Modes section. The nWAKEUP pin is delayed for 50 ms over the power-up event and stays low for 50 ms after the PWR_EN pin has been asserted. If the PWR_EN pin is not asserted within 5 s of the power-up event, the device shuts down and goes to the OFF state. In the ACTIVE state, the nWAKEUP pin is always high. Figure 9 shows the timing diagram for the nWAKEUP pin.