LTE Module Series
LTE OPEN EVB User Guide
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Table 18: Pin Definition of J0502
8
9
1
2
3
4
5
6
7
Figure 34: Pin Assignment of J0503
Table 19: Pin Definition of J0503
Pin No.
Signal Name
I/O
Description
1
NC
/
Not connected
2
RS232_RXD
DI
Receive data
3
RS232_TXD
DO
Transmit data
4
RS232_DTR
DI
Data terminal ready
5
RS232_GND
/
GND
6
NC
/
Not connected
7
RS232_RTS
DI
Request to send
8
RS232_CTS
DO
Clear to send
9
NC
/
Not connected
Pin No.
Signal Name
I/O
Description
1
NC
/
Not connected
2
RS232_RXD
DI
Receive data
3
RS232_TXD
DO
Transmit data
