초록 ▼

An apparatus for a signal processing system connected to a power supply having an output level and receiving a clock signal, that is responsive to the output level of the power supply, generates control signals for use as interrupt signals, reset signals and warning signals to the system. The appara

An apparatus for a signal processing system connected to a power supply having an output level and receiving a clock signal, that is responsive to the output level of the power supply, generates control signals for use as interrupt signals, reset signals and warning signals to the system. The apparatus comprises a detector for generating an undervoltage signal while the output level of the power supply is below a prespecified threshold; a circuit for supplying a programmable signal indicating a programmable threshold; a comparator connected to the power supply and receiving the programmable signal, for generating a voltage threshold signal while the output level is below the programmable threshold; and a programmable logic circuit. The programmable logic circuit receives general purpose inputs, the clock, the undervoltage signal and the low voltage signal, and generates the control signals. Using the invention, designers can easily create a wide variety of individual and sequential control signals which can be generated during power-up and power glitches, in response to externally forced signals, or during undervoltage occurrences.

대표청구항 ▼

An apparatus for generating control signals for supply to and control of a signal processing system, the apparatus being connected to a power supply, the power supply having an output level to which the apparatus is responsive, the apparatus receiving a reference signal indicating an analog threshol

An apparatus for generating control signals for supply to and control of a signal processing system, the apparatus being connected to a power supply, the power supply having an output level to which the apparatus is responsive, the apparatus receiving a reference signal indicating an analog threshold, the apparatus comprising: means, connected to the power supply and to receive the reference signal, for generating a threshold signal indicating whether the output level is above or below the analog threshold; and programmable logic means, connected to receive the threshold signal, for generating the control signals in response to the threshold signal.