User's Guide

UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
In the following flow chart is detailed the proper restart procedure:
NOTE:
In order to prevent a back powering effect it is recommended to avoid having any HIGH
logic level signal applied to the digital pins of the UL865 when the module is powered
OFF or during an ON/OFF transition.
Modem Reset
Proc.
Reset = LOW
Delay 200ms
Reset = HIGH
Delay 1s
Start AT CMD.