Patent ID: 7110902

Claim:
An output-adjustment embedded semiconductor sensor that integrates a plurality of sections, the sensor comprising: a detecting section for detecting at least either of a physical amount and a chemical amount as an electric amount; a non-volatile rewritable memory section for rewritably storing adjustment data to adjust an error of the detected electric amount; a lock section provided in front of the non-volatile rewritable memory section for controlling of interrupting a signal from entering for rewriting to the non-volatile rewritable memory section; a thermal detecting section for detecting temperature; an adjustment computation section for outputting an adjusted signal after offset adjustment of the detected electric amount, sensitivity adjustment and temperature adjustment, based on the detected temperature and the stored adjustment data; and an operation control section that externally receives an operation command and subsequent adjustment data, wherein the operation control section causes the lock section to allow the signal to enter for rewriting, to thereby write the subsequent adjustment data in the non-volatile rewritable memory when the operation command is a writing command to command to write the subsequent adjustment data in the non-volatile rewritable memory, and wherein the operation control section receives the operation command and the subsequent adjustment data based on binary voltage signals superimposed on applied power voltage.