Active low input
The active-low input must be connected to ground to ensure there is a ground
connection when the state of the input changes.
The following shows a typical active-low digital input connection:
Figure 9: Active low digital input connections
3.2.2. Power Control Digital Inputs
The VMM2404 has 1 active high digital input dedicated to power control that is
used for waking up (turning on) the product, called POWER_CONTROL.
3.2.2.1. Power Control Digital Input Capabilities
The VMM2404 has an active high power control digital input that must be
activated to power up the VMM2404.
Note: The power control digital input voltage must be greater than 4.0 V
before it is considered an active high input.
The power control digital input wakes-up the VMM2404 when switched high to a
voltage of 4.0 V or greater, and puts the VMM2404 in sleep mode (turns it off)
when switched low to a voltage less than 1.7 V. The VMM2404 will also go into
sleep mode when an open circuit condition occurs on the power control digital
input.
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