SIM5300E_Hardware_Design_V1.02
Current consumption(mA) (sleep mode)
4.4.2 Sleep Mode 1 (AT+CSCLK=1)
After setting command “AT+CSCLK=1”, user can control SIM5300E module to enter or exit the sleep mode 1
(AT+CSCLK=1) by DTR signal. When DTR is in high level and the module does not receive interruptions on air
and hardware (such as a GPIO interruption or data in serial port), SIM5300E will enter sleep mode 1
automatically. In this mode, SIM5300E can still receive paging or SMS from network, but the serial port is not
accessible.
Note: SIM5300E requires to set AT command “AT+CSCLK=1” and ensure DTR at high level to enable
the sleep mode 1; the default value is 0, which cannot make the module to enter sleep mode. For
more details, please refer to document [1].
4.4.3 Wake Up SIM5300E from Sleep Mode 1 (AT+CSCLK=1)
When SIM5300E is in sleep mode 1 (AT+CSCLK=1), the following methods can wake up the module:
Pull down DTR pin.
The serial port will be active after DTR pin is pulled to low level for about 50ms.
Receive a voice or data call from network.
Receive a SMS from network.
4.4.4 Sleep Mode 2 (AT+CSCLK=2)
In this mode, SIM5300E will continuously monitor the serial port data signal. When there is no data transfer
over 5 seconds on the RXD signal and there are no on air and hardware interruptions (such as a GPIO
interruption), SIM5300E will enter sleep mode 2 automatically. In this mode, SIM5300E can still receive
paging or SMS from network but the serial port is not accessible.
Note: SIM5300E requires to set AT command “AT+CSCLK=2” to enable the sleep mode 2; the default
value is 0, which cannot make the module to enter sleep mode. For more details, please refer to
document [1].
4.4.5 Wake Up SIM5300E from Sleep Mode 2 (AT+CSCLK=2)
When SIM5300E is in sleep mode 2 (AT+CSCLK=2), the following methods can wake up the module:
Send data to SIM5300E through main serial port.
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