Telit Wireless Solutions LM940 - Page 33

LM940 Hardware Design Guide
1VV0301352 Rev. 18 Page 33 of 75 2022-01-04
Not Subject to NDA
6.1.3. 1.8V SIM Card Pins
Parameter
Min
Max
Unit
Comment
VIH
Input high level
1.26V
2.1V
[V]
VIL
Input low level
-0.3V
0.36V
[V]
VOH
Output high level
1.44V
1.8V
[V]
VOL
Output low level
0V
0.4V
[V]
IIL
Low-level input
leakage current
--
1000
[uA]
No pull-up
IIH
High-level input
leakage current
-20
20
[uA]
No pull-down
Table23: 1.8V SIM Card Pins
6.1.4. 2.85V Pins – Absolute Maximum Ratings
Absolute Maximum Ratings – Not Functional
Parameter
Min
Max
Input level on any digital pin when on
--
+3.42V
Input voltage on analog pins when on
--
+3.42 V
Table 24: Absolute Maximum Ratings - 2.85V Pins
6.1.5. SIM Card Pins@2.85V
Parameter
Min
Max
Unit
Comment
VIH
Input high level
1.995V
3.15V
[V]
VIL
Input low level
-0.3V
0.57V
[V]
VOH
Output high
level
2.28V
2.85V
[V]
VOL
Output low level
0V
0.4V
[V]
IIL
Low-level input
leakage current
--
1000
[uA]
No pull-up
IIH
High-level input
leakage current
-20
20
[uA]
No pull-down
Table 25: Operating Range – For SIM Pins Operating at 2.85V
Power On
The LM940 is automatically turning on when the VBATT is supplied.