MC55 AT Command Set
17.2 AT+CCLK s
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MC55_ATC_V01.05 Page 429 of 469 2/10/04
Confidential / Released
17.2 AT+CCLK Real Time Clock
Syntax
Parameter Description
Format is "yy/mm/dd,hh:mm:ss", where the characters indicate the two last digits of the year, followed by month ,
day, hour, minutes, seconds; for example 6th of May 2004, 22:10:00 hours equa ls to "04/05/06,22:10:00"
Factory default is "02/01/01,00:00:00"
Notes
•<time> is retained if the device enters the Power Down mode via AT^SMSO.
•<time> will be reset to its factory default if power is totally disconnected. In this case, the clock starts with
<time>= "02/01/01,00:00:00" upon next power-up.
• Each time MC55 is restarted it takes 2s to re-initialize the RTC and to up date the current time. Therefore, it
is recommended to wait 2s before using the commands AT+CCLK and AT+CALA (for example 2s after
^SYSSTART has been output).
Test Command
AT+CCLK=?
Response(s)
OK
Read Command
AT+CCLK?
Response(s)
+CCLK: <time>
OK
Write Command
AT+CCLK=<time>
Response(s)
+CME ERROR: <err>
ERROR
OK
PIN ASC0 ASC1 MUX1 MUX2 MUX3
! % % % % %
Reference(s)
GSM 07.07
<time>(str)