GE864-QUAD Automotive V2 Hardware User Guide
1vv0300840 Rev.0.1 24/11/09
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved
page 46 of 65
10.1 GPIO Logic levels
Where not specifically stated, all the interface circuits work at 2.8V CMOS logic levels.
The following table shows the logic level specifications used in the
GE864-QUAD Automotive V2
interface
circuits:
Absolute Maximum Ratings
Parameter
Min
Max
Input level on any digital pin when on
-0.3V
+3.1V
Input voltage on analog pins when on
-0.3V
+3.0 V
Operating Range - Interface levels (2.8V CMOS)
Level
Min
Max
Input high level
2.1V
3.1V
Input low level
0V
0.5V
Output high level
2.2V
3.0V
Output low level
0V
0.35V
For 1,8V signals:
Operating Range - Interface levels (1.8V CMOS)
Level
Min
Max
Input high level
1.6V
2.2V
Input low level
0V
0.4V
Output high level
1,65V
2.2V
Output low level
0V
0.35V
