Telit Wireless Solutions GE863-PY manual Hardware Commands, Turning on the GE863-QUAD/PY

GE863-QUAD

GE863-PY

1vv0300715 Rev. 1 - 19/09/06

3 Hardware Commands

3.1 Turning ON the GE863-QUAD/PY

To turn on the GE863-QUAD/PY the pad ON# must be tied low for at least 1 second and then released.

The maximum current that can be drained from the ON# pad is 0,1 mA. A simple circuit to do it is:

R1

Power ON impulse

ON#

Q1

R2

GND

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 GE863-QUAD/PY power regulator and improper power on/off of the module. The line ON# must be connected only in open collector configuration.

NOTE: 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: The GE863-QUAD/PY turns fully on also by supplying power to the Charge pad (provided there's a battery on the VBATT pads).

For example:

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