Chapter 2: Hardware Interface Description
January 1, 2006 Module Hardware Description 15
Figure 2-3 illustrates the G24 power on and off upon application of a power supply, during which
the ON_N or IGN signals are not asserted.
Figure 2-3: Power Supply Turn-on and Off
Turning the G24 On Using ON_N
The ON_N input signal is set high by an internal pull-up resistor whenever a power supply is
applied to G24. Therefore, it is recommended to operate this signal using an open collector/drain
circuit connection.
Asserting the ON_N signal low for a minimum of 500 milliseconds (0.5 seconds) and a maximum
of 1.5 seconds will cause the G24 to turn-on.
Asserting the ON_N signal low for more than 1.5 seconds may cause the G24 to interpret the
signal as a power-off command, and turn off immediately after turning on.
Figure 2-4 illustrates the power-on process using the ON_N signal.
Figure 2-4: ON_N Power On Timing
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