Title:
LSI DESIGNING DEVICE
Document Type and Number:
Japanese Patent JPS63118878
Kind Code:
A
Abstract:
PURPOSE:To design an LSI satisfying characteristic specifications in a short time by applying an optimum designing method to a logical design and function design that require extremely labor and time. CONSTITUTION:LSI characteristics (y) is approximated by a function formula including a design parameter (x) and the optimum design parameter satisfying the target specifications is extracted out of said function formula by a design means. A CAD system applying the maximum design parameter comprises a simulation means for timing, logic and function designs that require the largest manpower and the longest design period. Thus the LSI designing manpower and designing period are extraordinarily reduced. In this system, P pairs of LSI characteristics are obtained with respect to P pairs of design parameters given in the form of a design matrix produced by desired procedures. Thus a LSI characteristic simulator group is carried out by P times. Based on these execution results, a model parameter is produced for a function approximating expression of the characteristic (y) to the parameter (x).
Inventors:
ISHII NAOKO
KANEKO KENJI
TAKAGI KATSUAKI
AOKI MASAO
MASUDA HIROO
MATSUO HITOSHI
SHIMADA SHOZO
KANEKO KENJI
TAKAGI KATSUAKI
AOKI MASAO
MASUDA HIROO
MATSUO HITOSHI
SHIMADA SHOZO
Application Number:
JP26373786A
Publication Date:
May 23, 1988
Filing Date:
November 07, 1986
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H03K19/00; G06F17/50; H01L21/82; (IPC1-7): G06F15/60; H01L21/82; H03K19/00
Attorney, Agent or Firm:
Katsuo Ogawa