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Smart Machine Smart Decision
SIM5360_Hardware Design_V1.06
2016-11-17
30
Tpw-
The time to indicate the module power off completely
-
-
2
s
Tuart
The time to disable UART
-
-
3
s
Tusb
The time to disable USB
-
-
2
s
Trestart
The time to power on again after Tpw-
0
-
-
s
User can also use the AT command
“
AT+CPOF
”
to power down the module. After that, the AT commands
cannot be executed any longer. The module enters the POWER DOWN mode, only the RTC is still active.
For details, refer to
Document [1]
.
3.5
UART Interface
SIM5360 provides two UARTs (universal
asynchronous serial transmission) port. UART1 consists of a
flexible 7-wire serial interface. UART2 consists of 2-wire serial interface. The module is as the DCE (Data
Communication Equipment) and the client PC is as the DTE (Data Terminal Equipment). AT commands
are entered and serial communication is performed through UART interface.
In order to prevent the UART signals of the module damaged due to voltage spikes or ESD, series resistors
can be used on UART signals.
The application circuit is in the following figures.
TXD
RXD
RTS
CTS
DTR
DCD
RI
TXD
RXD
RTS
CTS
DTR
DCD
RING
MODULE ( DCE)
HOST ( DTE)
UART
UART1
Figure 17: UART1 Full modem
SIMCOM
CONFIDENTIAL
FILE