Programmable CMOS circuit for user defined chip enable and output enable

Programmable CMOS circuit for user defined chip enable and output enable

A circuit constructed in accordance with this invention is described which includes a programmable chip enable-output enable buffer (11-X). The chip enable-output enable buffer may be programmed to provide a chip enable function in response to a logical 1 or logical 0 chip enable input signal, an ou...

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Hauptverfasser: MAHMOOD, QAZI A. S. M
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STATIC STORES
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creator MAHMOOD
QAZI A. S. M
description A circuit constructed in accordance with this invention is described which includes a programmable chip enable-output enable buffer (11-X). The chip enable-output enable buffer may be programmed to provide a chip enable function in response to a logical 1 or logical 0 chip enable input signal, an output enable function in response to a logical 1 or logical 0 output enable input signal, or an active powered chip regardless of the provided input signal. The chip enable-output enable buffer is programmed by "programming" selected transistors in the buffer. A P channel transistor (40, 60) is programmed by causing its source to be connected to its drain. An N channel transistor (50, 60) is programmed by causing its source and drain to be disconnected. In one embodiment, the programming is accomplished in the preferred embodiment by either a diffusion process or an ion implantation process.
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The chip enable-output enable buffer may be programmed to provide a chip enable function in response to a logical 1 or logical 0 chip enable input signal, an output enable function in response to a logical 1 or logical 0 output enable input signal, or an active powered chip regardless of the provided input signal. The chip enable-output enable buffer is programmed by "programming" selected transistors in the buffer. A P channel transistor (40, 60) is programmed by causing its source to be connected to its drain. An N channel transistor (50, 60) is programmed by causing its source and drain to be disconnected. 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S. M</creatorcontrib><title>Programmable CMOS circuit for user defined chip enable and output enable</title><description>A circuit constructed in accordance with this invention is described which includes a programmable chip enable-output enable buffer (11-X). The chip enable-output enable buffer may be programmed to provide a chip enable function in response to a logical 1 or logical 0 chip enable input signal, an output enable function in response to a logical 1 or logical 0 output enable input signal, or an active powered chip regardless of the provided input signal. The chip enable-output enable buffer is programmed by "programming" selected transistors in the buffer. A P channel transistor (40, 60) is programmed by causing its source to be connected to its drain. An N channel transistor (50, 60) is programmed by causing its source and drain to be disconnected. 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M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US4644504A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1987</creationdate><topic>INFORMATION STORAGE</topic><topic>PHYSICS</topic><topic>STATIC STORES</topic><toplevel>online_resources</toplevel><creatorcontrib>MAHMOOD; QAZI A. S. M</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>MAHMOOD; QAZI A. S. M</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Programmable CMOS circuit for user defined chip enable and output enable</title><date>1987-02-17</date><risdate>1987</risdate><abstract>A circuit constructed in accordance with this invention is described which includes a programmable chip enable-output enable buffer (11-X). The chip enable-output enable buffer may be programmed to provide a chip enable function in response to a logical 1 or logical 0 chip enable input signal, an output enable function in response to a logical 1 or logical 0 output enable input signal, or an active powered chip regardless of the provided input signal. The chip enable-output enable buffer is programmed by "programming" selected transistors in the buffer. A P channel transistor (40, 60) is programmed by causing its source to be connected to its drain. An N channel transistor (50, 60) is programmed by causing its source and drain to be disconnected. In one embodiment, the programming is accomplished in the preferred embodiment by either a diffusion process or an ion implantation process.</abstract><edition>4</edition><oa>free_for_read</oa></addata></record>
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PHYSICS
STATIC STORES
title Programmable CMOS circuit for user defined chip enable and output enable
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