User's Manual

GE864
GE864GE864
GE864-
--
-QUAD Automotive V2 Hardware User Guide
QUAD Automotive V2 Hardware User GuideQUAD Automotive V2 Hardware User Guide
QUAD Automotive V2 Hardware User Guide
1vv0300840 Rev.3 2010-04-08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 49 of 71
11.1.
11.1.11.1.
11.1. GPIO Logic levels
GPIO Logic levels GPIO Logic levels
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
GE864GE864
GE864-
--
-QUAD
QUAD QUAD
QUAD
Automotive V2
Automotive V2Automotive V2
Automotive V2 interface circuits:
Absolute Maximum Ratings
Absolute Maximum Ratings Absolute Maximum Ratings
Absolute Maximum Ratings
Parameter
ParameterParameter
Parameter Min
MinMin
Min Max
MaxMax
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
Operating Range Operating Range
Operating Range -
--
- Interface levels (2.8V CMOS)
Interface levels (2.8V CMOS) Interface levels (2.8V CMOS)
Interface levels (2.8V CMOS)
Level
LevelLevel
Level Min
MinMin
Min Max
MaxMax
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
Operating Range Operating Range
Operating Range -
--
- Interface lev
Interface lev Interface lev
Interface levels (
els (els (
els (1
11
1.
..
.8
88
8V CMOS)
V CMOS)V CMOS)
V CMOS)
Level
LevelLevel
Level Min
MinMin
Min Max
MaxMax
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