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GE864

GE864GE864

GE864-

-QUAD Automotive V2 Hardware User Guide

QUAD Automotive V2 Hardware User GuideQUAD Automotive V2 Hardware User Guide

QUAD Automotive V2 Hardware User Guide

1vv0300840 Rev.3 2010-04-08

5. Hardware Commands

5.1.

5.1.5.1.

5.1. Turning ON the

Turning ON the Turning ON the

Turning ON the GE864

GE864GE864

GE864-

-QUAD Automotive V2

QUAD Automotive V2QUAD Automotive V2

QUAD Automotive V2 module

module module

module

To turn on the GE864-QUAD Automotive V2 the pad ON* must be tied low for at least 1

seconds and then released.

When the power supply voltage is lower than 3.4V the pad ON# must be tied low for at

least 3 seconds.

The maximum current that can be drained from the ON* pad is 0,1 mA.

A simple circuit to do it is:

NOTE:

NOTE: NOTE:

NOTE:

don't use any pull up resistor on the ON* line, it is internally pulled up. Using pull up

resistor may bring to latch up problems on the GE864-QUAD Automotive V2 power

regulator and improper power on/off of the module. The line ON* must be connected

only in open collector configuration.

NOTE:

NOTE:NOTE:

NOTE:

In this document all the lines that are inverted, hence have active low signals are

labeled with a name that ends with a "*" .

TIP:

TIP:TIP:

TIP:

To check if the device has powered on, the hardware line PWRMON should be

monitored. After 00ms the line raised up the device could be considered powered on.

NOTE:

NOTE:NOTE:

NOTE:

It is recommended to avoid having any HIGH logic level signal applied to the digital pins

of the GE864-QUAD Automotive V2when the module is powered off.