GT863-PY Terminal Product Description
80269ST10026a Rev. 2 - 18/03/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 15 of 51
2.7 General Purpose I/O
2.7.1 RJ11 (AUX) connector
The signals on the RJ11 connector has 4 digital general purpose
inputs/outputs (GPIO). Connector type on the terminal is:
• Molex RJ11/6pin, part no.:95001-2661
The voltage range allowed on each pin is:
voltage range on GPIO vs. GND
terminal
min-max absolute max
GT863-PY Order-Num.:
3990150466
0-3.6VDC 3.75VDC
GT863-PY Order-Num.:
3990150471
0-3.3VDC 3.6VDC
AUTO POWER ON is enabled.
VMOD = direct connection to the pin of the power supply voltage input of the Telit module (3.8V
typical) and the output of the internal switching voltage regulator. The presence of this line at pin6
is to be considered as a low power output (<30mA) for pull-up potential (requires external reduction
of voltage to max. 3,6V/3,3V DC!).
NOTE: Connections to VMOD shall be made only when familiar with designing circuits conform to
EMC requirements.
All General Purpose input / output lines on the RJ11 GPIO interface have a 100 pF bypass
capacitor to ground and are connected to the related pins of the Telit module over a 100 Ohms
series resistor.
pin Signal I/O Function
Internal
Pull UP
Type
1 GND - Power Ground (negative)/ Signal Ground POWER/GND
2 GPIO4 I/O Configurable general purpose I/O pin / CMOS 2.8V
3
GPIO6 /
ALARM
I/O
Configurable general purpose I/O pin /
ALARM
CMOS 2.8V
4
GPIO7 /
BUZZER
I/O
Configurable general purpose I/O pin /
BUZZER
CMOS 2.8V
5 GPIO5 I/O Configurable general purpose I/O pin CMOS 2.8V
6 VMOD O Low power supply output (typically +3.8V DC) POWER OUT
Pin 6Pin 1
FRONT VIEW
To Next Page
Loading...