发明名称 |
Logic synthesis method, semiconductor integrated circuit and arithmetic circuit |
摘要 |
<p>A top-down design technique is used to design a semiconductor integrated circuit having a plurality of registers and a plurality of combinational circuits each of which is connected between the registers. When a semiconductor integrated circuit is logic-synthesized from a register transistor level, a front section of a critical path-containing combinational circuit is driven by a high voltage from a high-voltage source while the remaining section and other combinational circuits with no critical path are driven by a low voltage from a low-voltage source. A level shifter is placed at the stage before the critical path-containing combinational circuit. The level shifter converts a low-voltage signal into a high-voltage one. This invention facilitates logic synthesis of a low-power semiconductor circuit without increasing the maximum signal propagation delay of the critical path and without having to provide a level shifter in a combinational circuit. <IMAGE></p> |
申请公布号 |
EP0744704(A2) |
申请公布日期 |
1996.11.27 |
申请号 |
EP19960108359 |
申请日期 |
1996.05.24 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
OHARA, KAZUTAKE |
分类号 |
G06F7/52;G06F17/50;H03K19/00;H03K19/0175;(IPC1-7):G06F17/50;G06F7/48 |
主分类号 |
G06F7/52 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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