Abstract:
PROBLEM TO BE SOLVED: To provide a method and a device for a fuse programming integrated circuit in which fuses are used in common by redundant elements. SOLUTION: A method and a device for initializing an integrated circuit by the use of the compressed data from a remote fuse box are capable of reducing fuses in number required for repairing or customizing the integrated circuit, and grouping the fuses outside macros which are repaired by the fuses. The remote position of the fuses improves the arrangement of the macros, having redundant repairing performances in flexibility and enables the fuses to be properly grouped for facilitating the usability of programming and the layout of circuits. The fuses are formed into columns and rows, to represent control words and run-length compressed data and to provide more repairing points per fuse. The data are loaded into a shift register in series and shifted to macro positions, for controlling the selection of redundant circuits, so that defective integrated circuits can be repaired, and the logic is customized.
Abstract:
PROBLEM TO BE SOLVED: To provide a DRAM of a direct writing system and a method that uses a PFET bit switch. SOLUTION: A control circuit of a memory array device that has one or two related memory cells includes a true bitline connected to one or two memory cells and a complementary bitline. A sense amplifier is connected to the true bitline and the complementary bitline, and the sense amplifier amplifies a small voltage difference between the true bitline and the complementary bitline as a full level signal of a prescribed high and low logic voltage level. The bitline and the sense amplifier are selectively connected to a logic input circuit by the bitline pair, moreover, the bit line pair is constituted so that it connects the true bitline and the complementary bitline before wordline activation related to a cell selected for writing operation. Thereby, before signal formation on the true bitline and the complementary bitline, the writing operation to the selected cell is started. COPYRIGHT: (C)2005,JPO&NCIPI