Gemalto M2M GmbH MC56 User Manual
MC55/56 Hardware Interface Description
Confidential / Preliminary
Confidential / Preliminary
s
MC55/56_hd_v03.00
Page 61 of 104
16.08.2005
3.12 Control
signals
3.12.1 Inputs
Table 17: Input control signals of the MC55/56 module
Signal
Pin
Pin status
Function
Remarks
Falling edge
Power up MC55/56
Ignition
/IGT
Left open or HiZ No operation
Active low
≥ 100ms (Open
drain/collector driver to GND
required in cellular device
application).
required in cellular device
application).
Note: If a charger and a
battery is connected to the
customer application the /IGT
signal must be 1s minimum.
battery is connected to the
customer application the /IGT
signal must be 1s minimum.
Low
Power down
MC55/56
MC55/56
Emergency
shutdown
shutdown
/EMERG-
OFF
OFF
Left open or HiZ No operation
Active low
≥ 3.2s (Open
drain/collector driver required
in cellular device application).
At the /EMERGOFF signal the
watchdog signal of the GSM
engine can be traced (see
description in Table 26).
in cellular device application).
At the /EMERGOFF signal the
watchdog signal of the GSM
engine can be traced (see
description in Table 26).
(HiZ = high impedance)