Patent ID: 7632011
Filing Date: 2009-12-15
Classification: G01K

Abstract:
1. A programmable logic device comprising: a plurality of logic blocks; a plurality of input/output blocks adapted to provide an input/output interface for the programmable logic device; at least one memory block for storing data during operation of the programmable logic device; an interconnect structure adapted to route signals among the logic blocks, the input/output blocks, and the memory block; a configuration port for providing configuration data to the configuration memory cells; a bandgap reference circuit adapted to provide a reference voltage; a constant current generator adapted to provide a constant current; a reference signal circuit adapted to receive the reference voltage and provide a reference signal having a selectable value based on the reference voltage; a bipolar diode adapted to receive the constant current and provide a sense signal, wherein a value of the sense signal corresponds approximately to a temperature value of the integrated circuit; and a comparator adapted to receive the sense signal and the reference signal and provide a temperature sensor output signal.