MTX
‐
3G
‐
JAVA
Family
www.mtx
‐
terminals.com
www.mtxm2m.com
2015/10
v1.6
Page
52
/
109
MTX
M2M®
by
MATRIX
ELECTRONICA
S.L.U
RS485
models
GPS
‐
BT
models
Pin
Signal
Direction
Description
1
I2CCLK
Output
I2C
clock
signal
2
RD
0
Output
Main
RS232
ASC0
UART
signal:
Received
data
3
TD
0
Input
Main
RS232
ASC0
UART
signal:
Transmitted
data
4
NC
5
OUT
3
Output
Opto
‐
isolated
output
GPIO8
(open
collector)
6
I2CDAT
I/O
I2C
data
line
7
RTS
0
Input
Main
RS232
ASC0
UART
signal:
Request
to
send
8
CTS
0
Output
Main
RS232
ASC0
UART
signal:
Clear
to
send
9
IN
10
Input
Opto
‐
isolated
input
GPIO10
10
VEXT
Output
Output
voltage
reference
(4.1V)
11
IN
2
Input
Opto
‐
isolated
input
GPIO7
12
OUT
4
Output
Opto
‐
isolated
output
GPIO4
(open
collector)
13
ADC
2
Input
Analog
to
Digital
converter
input
2
14
GND
Ground
connection
15
ADC
1
Input
Analog
to
Digital
converter
input
1
Pin
Signal
Direction
Description
1
I2CCLK
Output
I2C
clock
signal
2
NC
3
NC
4
IO
1
(GPIO
9)
I/O
CMOS
General
Purpose
Digital
Input/Output
1
5
OUT
2
Output
Opto
‐
isolated
output
GPIO8
(open
collector)
6
I2CDAT
I/O
I2C
data
line
7
NC
8
NC
9
ADC
2
Input
Analog
to
Digital
converter
input
2
10
VEXT
Output
Output
voltage
reference
(3.86V)
11
IN
2
Input
Opto
‐
isolated
input
2
GPIO7
12
OUT
3
Output
Opto
‐
isolated
output
GPIO4
(open
collector)
13
IN
3
Input
Opto
‐
isolated
input
3
GPIO10
14
GND
Ground
connection
15
ADC
1
Input
Analog
to
Digital
converter
input
1
