User's Manual

GSM/GPRS/GNSS Module Series
MC60 Hardware Design
MC60_Hardware_Design Confidential / Released 49 / 99
Table 13: Logic Levels of the UART Interface
Table 14: Pin Definition of the UART Interfaces
1)
It is recommended to keep these pins open in stand-alone solution.
Parameter Min. Max. Unit
V
IL
0 0.25×VDD_EXT V
V
IH
0.75×VDD_EXT VDD_EXT +0.2 V
V
OL
0 0.15×VDD_EXT V
V
OH
0.85×VDD_EXT VDD_EXT V
Interface Pin Name Pin No. Description
UART Port
TXD 33 Transmit data
RXD 34 Receive data
DTR 37 Data terminal ready
RI 35 Ring indication
DCD 36 Data carrier detection
CTS 38 Clear to send
RTS 39 Request to send
Debug Port
DBG_RXD 30 Receive data
DBG_TXD 29 Transmit data
Auxiliary UART Port
1)
RXD_AUX
1)
24 Receive data
TXD_AUX
1)
25 Transmit data
GNSS UART Port
GNSS_RXD 23 Receive data
GNSS_TXD 22 Transmit data
NOTE