On Bifunctional Polymorphic Gates Controlled by a Special Signal
On Bifunctional Polymorphic Gates Controlled by a Special Signal
复制标题
特殊信号控制的双功能多态门
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
R. Zebulum
中科院分区：
文献类型：
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作者：
A. Stoica;R. Zebulum
多态数字电路是由多态（多功能）门和普通门组成的电路。除了其标准逻辑功能（如NAND）之外，多态门还具有另一种逻辑功能，该功能在特定条件下被激活，例如，当温度、光照或特殊信号达到一定水平时。本文介绍了现有的多态门及其特点、优点和局限性，并讨论了一类特殊的多态门--由特殊信号控制的双功能多态门。这些门似乎是最灵活的多态门。本文提出了一种新的用于多态电路的双输入双功能门。该门根据特定的信号产生与非或异或功能。提出的门是有效的面积开销方面-它只由9个晶体管，而相应的电路采用传统的门由10个以上的晶体管。关键词：硬件工程，数字电路，CMOS逻辑门，多态电子学，超大规模集成电路，可重构数字电路
Polymorphic digital circuits are circuits composed of polymorphic (multifunctional) as well as ordinary gates. In addition to its standard logic function (such as NAND), a polymorphic gate exhibits another logic function which is activated under a specific condition, for example, when Vdd, temperature, illumination or a special signal reaches a certain level. This paper describes existing polymorphic gates and their features, benefits and limits and discusses special class of polymorphic gates – bifunctional polymorphic gates controlled by a special signal. These gates seem to be most flexible polymorphic gates. In the paper a new two-input bifunctional gate for polymorphic circuits is proposed. The gate produces NAND or XOR function according to a special signal. The proposed gate is effective in terms of area overhead – it consists of 9 transistors only, while corresponding circuit employing conventional gates consists of more than 10 transistors. Key-Words: hardware engineering, digital circuits, CMOS logic gates, polymorphic electronics, VLSI, reconfigurable digital circuits