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 50 of 73
Not all GPIO pads support all these three modes:
• GPIO2 supports all three modes and can be input, output, Jamming Detect
Output (Alternate function)
• GPIO4 supports all three modes and can be input, output, RF
Transmission Control (Alternate function)
• GPIO5 supports all three modes and can be input, output, RFTX monitor
output (Alternate function)
• GPIO6 supports all three modes and can be input, output, alarm output
(Alternate function)
• GPIO7 supports all three modes and can be input, output, buzzer output
(Alternate function)
11.1.
11.1.11.1.
11.1. GPIO Logic
GPIO Logic GPIO Logic
GPIO Logic L
LL
Levels
evelsevels
evels
Where not specifically stated, all the interface circuits work at 2.8V CMOS logic
levels.
The following tables show the logic level specifications used in the GE864-QUAD V2 /
GE864-DUAL V2 interface circuits:
Absolute Maximum Ratings
Absolute Maximum Ratings Absolute Maximum Ratings
Absolute Maximum Ratings –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