User's Manual

GE864

GE864GE864

GE864-

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

5. Hardware Commands

5.1. Turning ON the GE864-QUAD V2 / GE864-DUAL V2

To turn the GE864-QUAD V2 / GE864-DUAL V2 on, the pad ON# must be tied low for

at least 1000ms and then released. A pulse duration less than 1000ms should also

start the power on procedure, but this is not guaranteed.

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

A simple circuit to do it is:

TIP:

TIP:TIP:

TIP:

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

monitored. After 1000ms the line raised up the device could be considered powered

on.

NOTE:

NOTE:NOTE:

NOTE:

Do not 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 V2 / GE864-DUAL V2

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

connected only in open collector configuration.

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

labeled with a name that ends with a "#" or with a bar over the name.

NOTE

NOTENOTE

NOTE: When the power supply voltage is lower than 3.4V, to turn ON the module, the

pad ON# must be tied low for at least 3 seconds.