Read-only memory circuit

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专利汇可以提供Read-only memory circuit专利检索,专利查询,专利分析的服务。并且PURPOSE:To reduce occupation area by using enhancement and depletion type IGFETs for ROM driving elements, etc., and depletion type IFGETs, etc., for loads. CONSTITUTION:An address decoder 23 drives an ROM matrix 24 by depletion type IGFETs 25..., enhancement type IGFETs 26..., etc., of self-matching Si gates in matrix arrays controlled directly by outputs of a cascaded FF21 and through inverters 22, etc. The matrix 24 consists of depletion type and enhancement type IFGETs 29..., and 30..., and output and input loads use depletion IGFETs 27..., and 28... of Si gates which have high performance and are IC- implemented highly. Thus, those enhancement and depletion IGFETs are used in combination to obtain the overlap constitution of the positive diffused layers and polysilicon layers of the self-matching FETs, and connections need not be made via through holes to reduce the occupation area of the ROM circuit.,下面是Read-only memory circuit专利的具体信息内容。

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