Device for the bus-networked operation of an electronic unit wit

Details Device for the bus-networked operation of an electronic unit wit Device for the bus-networked operation of an electronic unit wit

1997-03-26

1999-04-06

Coleman, Eric

39518212, 39518207, 3951822, 39518319, G06F 1114

Patent

active

058928936

ABSTRACT:
A device for bus-networked operation of an electronic unit having microcontroller has a semiconductor circuit which is supplied from a superordinate potential, and is connected between a bus protocol module of the microcontroller and the cores of a two core bus. The semiconductor circuit, which has at least two operating modes, "transmission and reception" (NORMAL) and "sleep" (SLEEP), compromises: a receiving circuit connected to the two bus cores, whose output communicates with a reception input of the bus protocol; a transmitting circuit coupled to receive the transmission output of the bus protocol function; a wake-up identification circuit connected to the cores of the two core bus, and having a wake-up input and switching means for providing, at a control output, a switch-on signal after identification of a wake-up signal from the wake-up input or from the bus, and for emitting a switch-off signal in the SLEEP mode. A voltage regulator, supplied from superordinate potential, provides a regulated output voltage to the microcontroller and to the bus protocol module. The voltage regulator has a control input which communicates with the control output of the semiconductor circuit, and is configured to switch on in the presence of the switch-on signal and to switch off in the presence of the switch-off signal,

REFERENCES:
patent: 5375051 (1994-12-01), Decker et al.
patent: 5481253 (1996-01-01), Phelan et al.
patent: 5555863 (1996-09-01), Kokubu
patent: 5765031 (1998-06-01), Minuth et al.

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