Patent ID: 6917238

Claim:
A fuse circuit used for adjusting an analog value based on a setting state of a fuse element, comprising: a latch circuit which stores the setting state of a fuse element, a latch clock generation circuit which generates a latch clock based on a cyclic signal, the latch clock being used for fetching the setting state of the fuse element into the latch circuit, a test signal holding circuit which holds a test signal for testing the setting state of the fuse element; a selector which selectively outputs one of the test signal held in the test signal holding circuit and the setting state of the fuse element fetched by the latch circuit based on a select signal; and a select signal generation circuit which generates the select signal based on a test mode setting signal and the latch clock, wherein the latch circuit cyclically fetches the setting state of the fuse element based on the latch clock, and wherein the select signal generation circuit generates the select signal so that the selector selectively outputs the setting state of the fuse element fetched by the latch circuit when the latch clock is input, and wherein the analog value is adjusted by the latch circuit based on the setting state of the fuse element fetched by the latch circuit.