Telit Wireless Solutions FN990 Series User Manual

FN990
Family Hardware Design Guide
1VV0301752 Rev. 3 Page 33 of 92 2022-10-07
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ect to NDA
6. DIGITAL SECTION
Logic Levels
Unless otherwise specified, all FN990 Family interface circuits are 1.8V CMOS logic.
Only USIM interfaces are capable of dual voltage I/O.
The following tables show the logic level specifications used in the FN990 interface
circuits. The data specified in the tables below are valid throughout all drive strengths
and the whole temperature range.
Warning: Do not connect FN990 digital logic signal directly to the
application digital logic signals with a voltage higher than 2.134V for
1.8V CMOS signals.
6.1.1. 1.8V Pins – Absolute Maximum Ratings
Parameter Min Max
Input level on any digital pin when on - +2.134 V
Input voltage on analog pins when on - +2.134 V
Table 21: Absolute Maximum Ratings - Not Functional
6.1.2. 1.8V Standard GPIOs
Parameter Min Max Unit Comment
V
IH
Input high level 1.26 2.1 [V]
V
IL
Input low level -0.3 0.54 [V]
V
OH
Output high level 1.35 1.8 [V]
V
OL
Output low level 0 0.45 [V]
Table 22: Operating Range - Interface Levels (1.8V CMOS)
6.1.3. 1.8V UIM1/UIM2 Pins
Parameter Min Max Unit Comment
V
IH
Input high level 1.17 2.1 [V]
V
IL
Input low level -0.3 0.63 [V]

Telit Wireless Solutions FN990 Series Specifications

General

Brand	Telit Wireless Solutions
Model	FN990 Series
Category	Computer Hardware
Language	English