Telit Wireless Solutions GE864-QUAD/PY, User Manual

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GE865 Hardware User Guide
1vv0300799 Rev.9 – 27-07-2009
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 35 of 70
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
GE865
interface
circuits:
Absolute Maximum Ratings -Not Functional
Parameter Min Max
Input level on any digital pin
(CMOS 2.8) when on
-0.3V +3.1V
Input level on any digital pin
(CMOS 1.8) when on
-0.3V +2.1V
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 3.0V
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 2.0V
Input low level
0V 0.4V
Output high level
1,65V 2.0V
Output low level
0V 0.35V
Current characteristics
Level Typical
Output Current 1mA
Input Current 1uA