#Siemens vdo key fob battery drain software

A control module for a remote keyless entry system, the control module acting as an interface between a receiver and a microcontroller that operates in a default sleep mode, comprising: a data line that is configurable by control software between a low state and an input capture state a receiver status line that is configurable by the control software and that reflects whether the receiver is turned on or off, wherein the receiver status line indicates that the receiver is turned on during a transient period and a data monitoring period and turned off during a sleep period by the control software and a control module that includes a data line that is configurable by the control software between a low state and an input capture state, the control module having a pulse blocker that blocks a stabilization pulse generated by the receiver during the transient period, wherein the control software holds the data line at the low state during the transient period to cause the pulse blocker to block the stabilization pulse.ДЎ0. The remote keyless entry system of claim 1, further comprising a clock that controls a length of the transient period, the data monitoring period, and a sleep period where the receiver is turned off and the microcontroller is in the sleep mode.Д©. The remote keyless entry system of claim 5, wherein a voltage divider connected to an emitter of the second transistor causes a biasing voltage on the second transistor to be greater than an emitter voltage of the second transistor, thereby reducing a temperature effect on activation of the second transistor.ДЁ. The remote keyless entry system of claim 5, wherein the energy storage device is a capacitor.Д§. The remote keyless entry system of claim 4, further comprising an energy storage device connected between a base of the second transistor and ground, wherein the pulse blocker includes a resistor and a diode connected to the base of the second transistor to drain the energy storage device and prevent the second transistor from turning on during the transient period when the data line is low.Д¦. The remote keyless entry system of claim 3, wherein at least one of the first, second and third switches are first, second and third transistors, respectively.ДҐ.

The remote keyless entry system of claim 1, wherein the control module comprises: a first switch that is connected to a reference voltage and that is turned on when the receiver is turned on a second switch that is turned on when the data line receives a pulse during the data monitoring period and a third switch that is turned on when the second switch is turned on to wake the microcontroller when the data line receives data during the data monitoring period so that the microcontroller can process the data.Д¤.

The remote keyless entry system of claim 1, wherein the control software holds the data line at the low state during the transient period to cause the pulse blocker to block the stabilization pulse.ДЈ. A remote keyless entry system, comprising: a microcontroller that is controllable by control software and operable in a default sleep mode a receiver that is turned on during a transient period and a data monitoring period by the control software and a control module that includes a data line that is configurable by the control software between a low state and an input capture state, the control module having a pulse blocker that blocks a stabilization pulse generated by the receiver during the transient period.Дў.

Siemens vdo key fob battery drain