Rainbow-electronics GM862-QUAD-PY Manuel d'utilisateur télécharger pdf (Page 19)

GM862-QUAD / PY Hardware User Guide

1vv0300748 Rev. 5 - 20/09/07

5.2.2 Hardware Unconditional Restart

To unconditionally Shutdown the GM862-QUAD / PY the pin RESET# must be tied low for at least 200

milliseconds and then released.

The maximum current that can be drained from the RESET# pin is 0,15 mA.

A simple circuit to do it is:

NOTE: don't use any pull up resistor on the RESET# line nor any totem pole digital output. Using pull up resistor

may bring to latch up problems on the GM862-QUAD / PY power regulator and improper functioning of the module.

The line RESET# must be connected only in open collector configuration.

TIP: The unconditional hardware Restart should be always implemented on the boards and software should use it

as an emergency exit procedure.

RESET#

Unconditional Restart

impulse

GND

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Rainbow-electronics GM862-QUAD-PY Manuel d'utilisateur Page 19