Patent ID: 7093975
Filing Date: 2006-08-22
Classification: G01K

Abstract:
1. A semiconductor integrated circuit comprising a temperature detection circuit including: a signal output circuit outputting a first signal having at least one rising or falling portion; a delay circuit connected to the signal output circuit and formed of at least one inverter to output a delayed version of said first signal; a logic circuit receiving said first signal and said delayed version of said first signal; a pulse width measurement circuit outputting a signal asserted in response to a signal directly received from said logic circuit having a pulse with a width of no less than a predetermined width corresponding to a temperature desired to be detected; and a latch circuit latching a signal output from said pulse width measurement circuit, said pulse width measurement circuit having an integration circuit receiving a signal output from said logic circuit and a Schmitt trigger circuit receiving a signal output from said integration circuit, said Schmitt trigger circuit having a trigger potential set to have a value corresponding to said predetermined width.