User's Manual

Smart Machine Smart Decision
SIM7100A_User Manual_V1.01 2014-12-11
50
Table 32: GPIO Electronic characteristic
Symbol Parameter
Min Typ Max Unit
V
IH
High-level input voltage
1.26 1.8 2.1 V
V
IL
Low-level input voltage
-0.3 0 0.63 V
V
OH
High-level output voltage
1.35 - 1.8 V
V
OL
Low-level output voltage
0 0 0.45 V
Note: The output driver current of GPIOs is 2mA.