Quectel M10 Hardware Description page 20

M10 Hardware Design
General purpose input/output
PIN NAME I/O
KBC0~KBC4 I
KBR0~KBR4 O
DISP_DATA I/O
DISP_CLK O
DISP_CS O
DISP_D/C O
DISP_RST O
NETLIGHT O
GPIO0 I/O
GPIO1_KBC5 I/O
LIGHT_MOS O
Serial port
PIN NAME I/O
DTR I
RXD I
TXD O
RTS I
CTS O
RI O
DCD O
Debug port
DBG_TXD O
DBG_RXD I
SIM interface
PIN NAME I/O
SIM_VDD O
SIM_DATA I/O
SIM_CLK O
M10_HD_V1.00
DESCRIPTION
Keypad interface
LCD display interface
Network status indication
Normal input/output port
Normal input/output
port/Keypad interface
Open drain output port
DESCRIPTION
Data terminal ready
Receive data
Transmitting data
Request to send
Clear to send
Ring indicator
Data carrier detection
Serial interface for
debugging only.
DESCRIPTION
Voltage supply for SIM card
SIM data output
SIM clock
DC CHARACTERISTICS
VILmin=0V
VILmax=0.67V
VIHmin=1.7V
VIHmax= VDD_EXT+0.3
VOLmin=GND
VOLmax=0.34V
VOHmin=2.0V
VOHmax= VDD_EXT
Imax=100mA
DC CHARACTERISTICS
VILmin=0V
VILmax=0.67V
VIHmin=1.7V
VIHmax= VDD_EXT+0.3
VOLmin=GND
VOLmax=0.34V
VOHmin=2.0V
VOHmax= VDD_EXT
DC CHARACTERISTICS
The voltage can be
selected by software
automatically either 1.8V
or 3V
VIHmin=0.7*SIM_VDD
VOHmin=0.8*SIM_VDD
pin open
COMMENT
If unused keep
pins open
Pull up to
VDD_EXT, if
unused keep pins
open
If unused keep
pins open
If unused keep
pins open
If unused keep
pin open
COMMENT
If only use TXD
RXD GND to
communicate,
RTS pin should
connect to GND
directly.
If unused keep
pins open.
If unused keep
pins open
COMMENT
All signals of
SIM interface
should be
protected against
ESD with a TVS
diode array.
- 19 -