Control Signals; Inputs; Table 15: Input Control Signals Of The Mc45 Module - Siemens MC45 Manual

MC45 Hardware Interface Description
P R E L I M I N A R Y

3.8 Control signals

The following control signals are available (2.65V level).

3.8.1 Inputs

Table 15: Input control signals of the MC45 module

Signal Pin
/IGT
Ignition
/EMERG-
Emergency
OFF
shutdown
(HiZ = high impedance)
MC45_HD_01_V00.02a
Pin status Function
Falling edge Power up MC45
Left open or HiZ No operation
Low Power down MC45
Left open or HiZ No operation
Page 57 of 90
Remarks
Active low ³ 100ms (Open
drain/collector driver to GND
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.
Active low ³ 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 19).
12.08.2002