Rainbow Electronics MG260 - Manual (Page 36)

MG260 Product Specification
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2.5.3.2 Reset sequence
To activate the « emergency » reset sequence, the RSTEXTN signal has to be set to low for
500s minimum.
As soon as the reset is complete, the AT interface answers « OK » to the application. For
this, the application has to send AT. If the application manages hardware flow control, the
AT command can be sent during the initialization phase. Another solution is to use the
AT+WIND command to get an unsolicited status from the module.
For further details, refer to AT commands documentation [4].
EXTERNAL RST
Min:500
μs
Typ:2 ms
AT answers “OK”
Module READY
STATE OF THE MODULE
RESET mode
I
BB+RF
=20
to 40 mA
Module ON
I
BB+RF
<120 mA
without loc update
Module READY
SIM and network dependent
Figure 11: Reset sequence diagram
2.5.4 Activity status indication
The GSM and GPS activity status indication signals can be used to drive two LEDs
through an open-collector transistor according to the module activity status.
Pin description
Signal Pin
#
I/O I/O type Description
FLASH_LED 72 I/O CMOS/2x GSM Status
GPS_TIMEPLUSE 17 I/O 2V8_CMOS GPS Status
FLASH_LED GSM status
OFF Module in download mode or module OFF
Permanent Module switched ON, not registered on
the network ON
Slow flash
LED ON for 200 ms,
OFF for 2 s Module switched ON, registered on the
network, no communication in progress.