Specifications

Smart Machine Smart Decision
SIM7080G _Hardware Design _V1.03 16 2019-12-13
74,
75,
76, 77
System Control
PWRKEY
39
DI,PU
System power on/off control
input, active low.
The efficient input low level
must be below 0.4V.
The efficient input high level
must be higher than 1.0V.
After the PWRKEY continues to
pull down more than 12S, the
system will automatically
reset.Therefore, long-term
grounding is not recommended
The level is 1.5V when this PIN
is floating;
SIM interface
SIM_DATA
15
I/O,PU
SIM Card data I/O, which has
been pulled up via a 20KR
resistor to SIM_VDD internally.
Do not pull it up or down
externally.
All lines of SIM interface
should be protected against
ESD.
SIM_RST
17
DO
SIM Reset
SIM_CLK
16
DO
SIM clock
SIM_VDD
18
PO
Power output for SIM card, its
output Voltage depends on SIM
card type automatically. Its
output current is up to 50mA.
USB*
USB_VBUS
24
DI,PD
Valid USB detection input with
3.5~5.25V detection voltage
Software download interface.It
is recommended to reserve
interfaces or test points.
USB_DP
25
I/O
Positive line of the differential,
bi-directional USB signal.
USB_DM
26
I/O
Negative line of the differential,
bi-directional USB signal.
UART interface
UART1_TXD
1
DOH
Transmit Data
If unused, keep them open.
UART1_RXD
2
DI,PU
Receive Data
UART1_RTS
3
DI,PU
Request to send
UART1_CTS
4
DOH
Clear to Send
UART1_DCD
5
DOH
Carrier detects
UART1_DTR
6
DI,PU
DTE get ready
UART1_RI
7
DOH
Ring Indicator
UART2_TXD
22
DOH
The default function is GPIO, and
UART is only used for
Debug UART, the boot log
will be output during bootup.If