Hardware Interface Description - Wireless Data Modules
Hardware Interface Description - Wireless Data Modules
Hardware Interface Description - Wireless Data Modules
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
MC55/56 <strong>Hardware</strong> <strong>Interface</strong> <strong>Description</strong><br />
Confidential / Released<br />
s<br />
3.12 Control signals<br />
3.12.1 Inputs<br />
Table 17: Input control signals of the MC55/56 module<br />
Signal Pin Pin status Function Remarks<br />
Ignition<br />
/IGT<br />
Falling edge<br />
Left open or HiZ<br />
Power up MC55/56<br />
No operation<br />
Active low ≥ 100ms (Open<br />
drain/collector driver to GND<br />
required in cellular device<br />
application).<br />
Note: If a charger and a<br />
battery is connected to the<br />
customer application the /IGT<br />
signal must be 1s minimum.<br />
Emergency<br />
shutdown<br />
/EMERG-<br />
OFF<br />
Low Power down<br />
MC55/56<br />
Left open or HiZ<br />
No operation<br />
Active low ≥ 3.2s (Open<br />
drain/collector driver required<br />
in cellular device application).<br />
At the /EMERGOFF signal the<br />
watchdog signal of the GSM<br />
engine can be traced (see<br />
description in Table 26).<br />
(HiZ = high impedance)<br />
MC55/56_hd_v02.06 Page 61 of 105 29.10.2004
Change language