GSM/GPRS/GNSS Module Series
MC60 Series Hardware Design
MC60_Series_Hardware_Design Confidential / Released 54 / 114
The logic levels are described in the following table.
Table 15: Logic Levels of the UART Interface
Table 16: Pin Definition of the UART Interfaces
Parameter
Min.
Max.
Unit
V
IL
0
0.25 × VDD_EXT
V
V
IH
0.75 × 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.
I/O
Description
UART Port
TXD
33
DO
Transmit data
RXD
34
DI
Receive data
DTR
37
DI
Data terminal ready
RI
35
DO
Ring indication
DCD
36
DO
Data carrier detection
CTS
38
DO
Clear to send
RTS
39
DI
Request to send
Debug Port
DBG_RXD
30
DI
Receive data
DBG_TXD
29
DO
Transmit data
Auxiliary UART Port
1)
RXD_AUX
1)
24
DI
Receive data
TXD_AUX
1)
25
DO
Transmit data
GNSS UART Port
GNSS_RXD
23
DI
Receive data
GNSS_TXD
22
DO
Transmit data
Quectel
Confidential
