L
LE920 Hardware User Guide
1vv0301026 Rev.0 - draft4 – 2013-05-
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
Page 31 of 76
For example:
1-
Let us assume you need to drive the RESET# pad with a totem pole output of a +1.8/5 V
microcontroller (uP_OUT2):
4.3.4.
Hardware Unconditional Shutdown
To unconditionally Shutdown LE920, the pad SHDN_N must be tied low for at least 200
milliseconds and then released.
A simple circuit to do it is:
SHDN_N
Unconditional Shutdown
impulse
GND
SHDN_N
Unconditional Shutdown
impulse
GND
