LEDS, CONNECTORS, AND SPECIFICATIONS
36
MultiModem
®
iCell MTCMR User Guide
Configure Pin 3 as either Digital Input (3.3V tolerant TTL/CMOS levels), Digital Output (3.3V High) or as an
ADC input (0 to 3.3V rail)
Configure Pin 4 as either Digital Input (3.3V tolerant TTL/CMOS levels), Digital Output (3.3V High) or as an
ADC input (0 to 3.3V rail)
Pin 5, ADC input (0 to 3.3V rail)
Pin 6 is GND and must be connected to the ground of the attached device
GPIO DC Characteristics
Pins 1-5 contain ESD protection.
Pins 1, 2 Input Voltage
Parameter
Min
Max
Units
Input Low-level Voltage
0.3
1.0
V
Input High-level Voltage
3.0
24
V
Pins 1,2 are digital input only.
Pins 3,4 Input Voltage
Parameter
Min
Max
Units
Input Low-level Voltage
-0.3
0.8
V
Input High-level Voltage
2.0
5.5
V
Pins 3,4 Output Voltage
Parameter
Min
Max
Units
Output Low-level Voltage
0.0
0.4
V
Output High-level Voltage
2.9
3.3
V
Pins 3,4 Output Current
Parameter
Min
Max
Units
Output Current
-
2
mA
