SEMICONDUCTOR GATE ARRAY DEVICE

摘要

PURPOSE:To obtain large delay time without decreasing the number of standard gate cells by connecting delay means between at least two input/output circuits out of a plurality of the I/O circuits so as to input or output signals into each standard gate cell. CONSTITUTION:A delay circuit is constructed between an output buffer circuit 13 and a Schmit input buffer circuit 14 which act as surplus I/O circuits out of a plurality of I/O circuits which are disposed at peripheral parts of a gate cell group on a substrate. These electrode parts 15 and 16 are connected each other by a conduction part 17 for connection and one side of the electrode 16 is connected to a device pin 18 which exhibits only a position schematically. Protective resistor 21 is inserted in series into the side of an output end of the output buffer circuit 13. A CR delay circuit is composed of the above protective resistor 21 and a capacitor C which is formed between the electrode pad 16 and the substrate.