SEMICONDUCTOR MEMORY DEVICE FOR SETTING DEFECT FREE BLOCK AS BOOT BLOCK AND METHOD THEREOF

摘要

PURPOSE: A semiconductor memory device and a boot block setting method thereof are provided to set an arbitrary defect free block as the boot block by including an electrical fuse part storing fuse information addressing the defect free block. CONSTITUTION: An electrical fuse part(210) stores fuse information addressing a defect free block inside memory blocks. A latch part(220) latches fuse information. A comparison part compares the fuse information latched in the latch part with the address signals addressing memory blocks. A comparison part(230) generates an address signal for a boot block. The defect free block is got from a test result in a package state after assembling a semiconductor memory device.