Gpio Dc Characteristics; Rs232 9-Pin Functions Of The Female End Connector - Multitech MultiModem iCell User Manual

Chapter 1 – Product Description and Specifications
GPIO DC Characteristics
Pins 1, 2, Input Voltage
Parameter
Input Low‐level Voltage
Input High‐level Voltage
Pins 3, 4, Input Voltage
Parameter
Input Low‐level Voltage
Input High‐level Voltage
Pins 3, 4, Output Voltage
Parameter
Output Low‐level Voltage
Output High‐level Voltage
Pins 3, 4, Output Current
Parameter
Output Current
Pins 1, 2 are digital input only.
Pin 5 is an analog input only.
Pins 1‐5 contain ESD protection.
RS232 9­Pin Functions of the Female End Connector
External Power
Signal IN/OUT
Pin 1 CD O
Pin 2 RX O
Pin 3 TX I
Pin 4 DTR I
Pin 5 GND ‐‐
Pin 6 DSR O
Pin 7 RTS I
Pin 8 CTS O
Pin 9 RI O
Multi‐Tech Systems, Inc. MultiModem iCell User Guide
Min Max
0.3 1.0
3.0 24
Min Max
‐0.3 0.8
2.0 5.5
Min Max
0.0 0.4
2.9 3.3
Min Max
2
Serial Cable
Female Connector
Units
V
V
Units
V
V
Units
V
V
Units
mA
24