Multitech MTCMR-G2 Betriebsanweisung PDF herunterladen (Seite 36)

LEDS, CONNECTORS, AND SPECIFICATIONS

■ Configure Pin 4 as either Digital Input (5V 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

RS-232 9-Pin Female Connector

Pin Abbre Description In/Out

viatio

1 CD Carrier Detect O

2 RX Receive O

36 MultiModem

iCell MTCMR User Guide

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Multitech MTCMR-G2 Betriebsanweisung Seite 36