SIM800 datasheet(160/380 Pages) SIMCOM

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SIM800 Series_AT Command Manual_V1.09

160

2015-08-03

channel. Channel 2, 3 is virtual channel.

6.2.20 AT+CSCLK

Configure Slow Clock

AT+CSCLK

Configure Slow Clock

Response

+CSCLK: (list of supported <n>s)

Test Command

AT+CSCLK=?

Parameter

See Write Command

Response

+CSCLK: <n>

Read Command

AT+CSCLK?

Parameter

See Write Command

Response

ERROR

Write Command

AT+CSCLK=<n

Parameter

<n>

Disable slow clock, module will not enter sleep mode.

Enable slow clock, it is controlled by DTR. When DTR is

high, module can enter sleep mode. When DTR changes to low

level, module can quit sleep mode.

Enable slow clock automatically. When there is no interrupt

(on air and hardware such as GPIO interrupt or data in serial

port), module can enter sleep mode. Otherwise, it will quit sleep

mode.

Parameter Saving

Mode

AT&W_SAVE

Max

Response

Time

Reference

Note



There are two caveats when you want to quit sleep mode in mode 2:

1, You should input some characters (at least one) to awake module

2, An interval time of 100ms more is necessary between waking characters

and following AT commands,otherwise the waking characters will not be

discarded completely,and messy codes will be produced which may leads to

UART baudrate re-adaptation.



The +CSCLK value can not be reset by AT&F or ATZ command.

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