Mitsubishi Denki Kabushiki Kaisha

Akira Imamura

Toshiaki Koyama

Yasuhiro Mabuchi

A semiconductor integrated circuit device has a first LT fuse group for storing replacement information used in a memory array; a second LT fuse group for storing confirmation information to confirm whether the first LT fuse group has accurately stored the replacement information; and an input/output port for outputting information PI actually stored in the first LT fuse group and information CI actually stored in the second LT fuse group to an external memory tester. The first and second LT fuse groups are fabricated according to the same conditions, and the laser input to the respective group is set to be under the same conditions.

Growing community of inventors

Hyogo, Japan

Akira Imamura