High-Performance Memory Macrocells with Row and Column Sliceable Architecture

Nobutaro SHIBATA  Yoshinori GOTOH  Shigeru DATE  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E76-C   No.11   pp.1641-1648
Publication Date: 1993/11/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on LSI Memories)
Category: Application Specific Memory
Keyword: 
ASIC,  CMOS,  macrocell,  memory,  configurable,  row sliceable,  decoder,  short design Turn-Around-Time (TAT),  

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Summary: 
New memory-macrocell architecture has been developed to obtain high-performance macrocells with a short design Turn-Around-Time (TAT) in ASIC design. The authors propose row- and column-sliceable macrocell architecture in which only nine kinds of rectangular-functional cells, called leaf-cells, are abutted to form macrocells of any sizes. The row-sliceable structure of peripheral circuits is possible due to a newly-developed channel-embedded address decoder combined with via-hole programming. Macrocell performance, especially access time, is kept at a high level by the distributed driver configuration. Zero address-setup time during write operation is actualized by delaying internal write timing with a new delay circuit. A short design TAT of 30 minutes is accomplished due to the simplicity of both macrocell generation and the checking procedure. The macrocells are designed with gate-array and full-custom style, and fabricated with 0.5 µm CMOS technology.