Telit Wireless Solutions FN990 Series - Using a GPIO as OUTPUT

FN990
Family Hardware Design Guide
1VV0301752 Rev. 3 Page 56 of 92 2022-10-07
Not Sub
j
ect to NDA
6.4.2. Using a GPIO as OUTPUT
GPIO pins, when used as output, can drive 1.8V CMOS digital devices or compatible
hardware. When set as outputs, the pins have a push-pull output, and therefore the pull-
up resistor can be omitted.
Figure 18: GPIO Output Pin Equivalent Circuit