Advanced Micro Devices Corporation

Advanced Micro Device, Inc.

Cuong O Trinh

Vincent K Win

Andrew K Chan

Behzad Nouban

Mark Kwan

An apparatus for controlling the power consumption of a programmable logic device which has a plurality of output signals comprising a programmable switch coupled to each one of the logic signal outputs of the programmable logic device. The programmable switch may include a sense amplifier coupled to each one of said logic signal outputs; a first transistor coupled between said amplifier and ground; a latch coupled to the gate of said first transistor; a second transistor responsive to a first control signal; and an electrically erasable programmable read only memory (EEPROM) cell, coupled to said latch and responsive to a second control signal, said second transistor and said EEPROM cell providing a state signal to said latch.

Programmable sense amplifier power reduction

An improved address transition detector for use in PAL circuits is disclosed. The invention provides a predetermined logical output on a transition detection signal (TDS) bus for a transition of the input address on an input pad of the PAL. The TDS bus is used to trigger a phi generator which controls sense amplifiers and latch blocks on the such that the circuitry is maintained in a low power stand-by mode. The detector includes a first inverter for buffering the address input to provide a first signal, a second inverter for inverting the first signal to provide a second signal and a comparator for providing the predetermined logical level on the TDS bus for a period of time after the first signal and the second signal have changed states.

Growing community of inventors

Daly City, CA, United States of America

Cuong O Trinh