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US 6,553,499 B1Granted
Low power circuit for waking from a sleep mode by using a remote power-on signal
AssigneeRobert Bosch GmbH
InventorsThomas Weigold, Stefan Koch
Life of this patent
Estimating the term…
Abstract
An electronic circuit which has a voltage terminal, a switch, a voltage stabilizer and a computer. In addition, an interface terminal is provided, via which the computer can exchange data via an interface. After a supply voltage is applied at the voltage terminal, the switch (11) is initially closed so that the circuit has an extremely low quiescent current. A signal at the interface terminal causes the switch to close and the voltage stabilizer and the computer are activated.
Claims12
An electronic circuit comprising:
- a computer;
- a voltage terminal;
- an interface terminal, the computer configured to exchange serial data via the interface terminal;
- a first switch, the first switch being electrically coupled between the computer and the voltage terminal, the first switch being a controllable switch, the first switch having a first gate terminal, the first gate terminal being coupled to the interface terminal, the first gate terminal being connectable via a first resistor to a first potential, the first switch being opened when the first potential is applied to the first gate terminal, the first switch being closed when a second potential is applied to the first gate terminal;
- and
- a second switch, the second switch being a controllable switch having a second gate terminal, the first gate terminal being connectable via the second switch to the second potential, a third potential being connectable to the second gate terminal when the first switch is open, the second switch remaining open when the third potential is connected to the second gate terminal.
3 more elements
An electronic circuit, comprising:
- a computer;
- a voltage terminal;
- an interface terminal, the computer configured to exchange serial data via the interface terminal;
- a first switch electrically coupled between the computer and the voltage terminal, the first switch bing a controllable switch, the first switch having a first gate terminal, the first gate terminal being coupled to the interface terminal, the first gate terminal being connectable via a first resistor to a first potential, the first switch being opened when the first potential is applied to the first gate terminal, the first switch being closed when a second potential is applied to the first gate terminal;
- and
- a second switch, the second switch being a controllable switch having a second gate terminal, the first gate terminal being connectable via the second switch to the second potential when the first switch is open, the second switch remaining open when a third potential is connected to the second gate terminal;
- wherein the second gate terminal is connected to an output of the computer, the computer configured to selectively apply a ground potential to the second gate terminal via the output of the computer.
4 more elements
An electronic circuit comprising:
- a computer;
- a voltage terminal;
- an interface terminal, the computer being capable of exchanging serial data via the interface terminal;
- a first switch, the first switch being electrically coupled between the computer and the voltage terminal, the first switch being a controllable switch, the serial data influencing the state of the first switch, the first switch having a first gate terminal, the first gate terminal being coupled to the interface terminal, the first gate terminal being connectable via a first resistor to a first potential, the first switch being opened when the first potential is applied to the first gate terminal, the first switch being closed when a second potential is applied to the first gate terminal;
- and
- a second switch, the second switch being a controllable switch having a second gate terminal, the first gate terminal being connectable via the second switch to the second potential, a third potential being connectable to the second gate terminal when the first switch is open, the second switch remaining open when the third potential is connected to the second gate terminal.
3 more elements
An electronic circuit comprising:
- a computer;
- a voltage terminal;
- an interface terminal, the computer being capable of exchanging serial data via the interface terminal;
- a first switch, the first switch being electrically coupled between the computer and the voltage terminal, the first switch being a controllable switch, the first switch having a first gate terminal, the first gate terminal being coupled to the interface terminal, the first gate terminal being connectable via a first resistor to a first potential, the first switch being opened when the first potential is applied to the first gate terminal, the first potential being supplied to the computer when the first switch is closed, the first switch being closed when a second potential is applied to the first gate terminal;
- and
- a second switch, the second switch being a controllable switch having a second gate terminal, the first gate terminal being connectable via the second switch to the second potential, a third potential being connectable to the second gate terminal when the first switch is open, the second switch remaining open when the third potential is connected to the second gate terminal.
3 more elements
An electronic circuit comprising:
- a computer;
- voltage terminal;
- an interface terminal, the computer being capable of exchanging serial data via the interface terminal;
- a first switch, the first switch being electrically coupled between the computer and the voltage terminal, the first switch being a controllable switch, the first switch having a first gate terminal, the first gate terminal being coupled to the interface terminal, the first gate terminal being connected via a first resistor to a first potential, the first switch being opened when the first potential is applied to the first gate terminal, the first switch being closed when a second potential is applied to the first gate terminal, the first potential being supplied to the computer when the first switch is closed, the first potential not being supplied to the computer when the first switch is open;
- and
- a second switch, the second switch being a controllable switch having a second gate terminal, the first gate terminal being connected via the second switch to the second potential, the second gate terminal being connected to an output of the computer, a computer supplied third potential being connectable to the output of the computer when the first switch is open, the second switch remaining open when the third potential is connected to the output of the computer.
3 more elements
Dependencies are inferred from the claim text.