User's Manual

GE864
GE864GE864
GE864-
--
-QUAD V2 / GE864
QUAD V2 / GE864QUAD V2 / GE864
QUAD V2 / GE864-
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-DUAL V2 Hardware User Guide
DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide
DUAL V2 Hardware User Guide
1vv0300875 Rev.1 – 2010-03-29
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved. Page 35 of 73
8. Logic Level Specifications
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 Telit
GE864-QUAD V2 / GE864-DUAL V2 interface circuits:
Absolute Maximum R
Absolute Maximum RAbsolute Maximum R
Absolute Maximum Ratings
atings atings
atings – Not Functional
Not FunctionalNot Functional
Not Functional
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 L
Interface L Interface L
Interface Levels (2.8V CMOS)
evels (2.8V CMOS)evels (2.8V CMOS)
evels (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 Levels (1.8V CMOS)
Interface Levels (1.8V CMOS) Interface Levels (1.8V CMOS)
Interface Levels (1.8V 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
C
CC
Current characteristics
urrent characteristicsurrent characteristics
urrent characteristics
Level
LevelLevel
Level Typical
TypicalTypical
Typical
Output Current 1mA
Input Current 1uA