MC55 AT Command Set
2.8 AT+CFUN
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MC55_ATC_V01.05 Page 43 of 469 2/10/04
Confidential / Released
2.8.1 Wake up the ME from SLEEP mode
A wake-up event is any event that causes the ME to draw current. Depending on the selected mode, the wake-
up event either switches the SLEEP mode off and takes the ME back to full functionality
AT+CFUN=1, or activates
the ME temporarily without terminating the selected SLEEP mode.
Definitions of the state transitions described in Table 2.3:
• Quit: ME exits SLEEP mode.
• Temporary: ME becomes active temporarily for the duration of the event and the mode-specific follow-up time
after the last character was sent or received on the serial interface.
• No effect: Event is not relevant in the selected SLEEP mode. The ME does not wake up.
Table 2.3: Wake-up events in NON-CYCLIC and CYCLIC SLEEP modes
Event Selected mode:
<fun>=0
Selected mode:
<fun>=5 or 6
Selected mode:
<fun>=7 or 8 or 9
Ignition line No effect No effect No effect
/RTS0 or /RTS1 activation Quit No effect (RTS is only
used for flow control)
Mode 7 and 8: No effect
(RTS is only used for flow
control)
Mode 9: Temporary
Unsolicited Result Code
(URC)
Quit Quit Temporary
Incoming voice or data
call
Quit Quit Temporary
Any AT command (incl.
outgoing SMS, voice or
data call)
Not possible (UART dis-
abled)
Temporary Temporary
Incoming SMS (AT+CNMI
is set to 0,0 (this is the
default setting)
No effect No effect No effect
Incoming SMS (AT+CNMI
is set to 1,1)
Quit Quit Temporary
GPRS data transfer Not possible (UART dis-
abled)
Temporary Temporary
RTC alarm line Quit Quit Temporary
AT+CFUN=1 Not possible (UART dis-
abled)
Quit Quit
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