User Guide

GE9
GE9GE9
GE910 Hardware User Guide
10 Hardware User Guide10 Hardware User Guide
10 Hardware User Guide
1vv0300962 Rev.4 2012-06-25
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 53 of 73
Mod. 0805 2011-07 Rev.2
11.1. GPIO Logic levels
Where not specifically stated, all the interface circuits work at 1.8V CMOS logic levels.
The following table shows the logic level specifications used in the GE910 interface circuits:
Absolute Maximum Ratings -Not Functional
Parameter Min Max
Input level on any digital pin
(CMOS 1.8) when on
-0.3V +2.1V
Operating Range - Interface levels (1.8V CMOS)
Level Min Max
Input high level
1.5V 1.9V
Input low level
0V 0.35V
Output high level
1.6V 1.9V
Output low level
0V 0.2V
Current characteristics
Level Typical
Output Current 1mA
Input Current 1uA