Title:
SEMICONDUCTOR DEVICE AND SEMICONDUCTOR SYSTEM
Document Type and Number:
Japanese Patent JP2023114100
Kind Code:
A
Abstract:
To provide a semiconductor device capable of reducing power consumption and performing search operations with high speed.SOLUTION: A memory array includes a plurality of associative memory cells arranged in rows and columns for storing entries. The memory cell array includes: a plurality of match lines divided into a plurality of memory blocks for sequentially executing a search operation along the column direction and provided corresponding to each memory cell row corresponding to each memory block; a plurality of search lines provided corresponding to each memory cell column corresponding to each memory block; and further a plurality of match amplifiers respectively provided for the plurality of match lines corresponding to each memory block. The match line provided corresponding to the memory block at the preceding stage is set shorter than the match line provided corresponding to the memory block at the subsequent stage. A timing control unit is further provided for controlling the timing of driving the search line of the memory block at the subsequent stage based on the length of the match line provided corresponding to the memory block at the preceding stage.SELECTED DRAWING: Figure 2
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Inventors:
TANAKA SHINJI
SAWADA YOHEI
MORIMOTO SHIGEO
SAWADA YOHEI
MORIMOTO SHIGEO
Application Number:
JP2022016219A
Publication Date:
August 17, 2023
Filing Date:
February 04, 2022
Export Citation:
Assignee:
RENESAS ELECTRONICS CORP
International Classes:
G11C15/04; G06F30/3308; G11C7/22
Attorney, Agent or Firm:
Patent Attorney Fukami Patent Office
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