发明名称 Programmable logic storage element for programmable logic devices
摘要 A storage element for use in a logic array including a flip-flop device and a complex logic circuit interconnected in such a way that the output of the complex logic circuit is an input to the flip-flop. A Toggle Flip-Flop Control (TFFC) signal, an invert control (INV) signal, and a clock (CLK) signal are also inputs to the complex logic circuit. The output of the flip-flop connects to an output pad, an internal direct feedback line which is one of the means by which the flip-flop is connected to the comples logic circuit, and an external feedback bus which leads back to an associated AND-OR array. The inptu to the complex logic circuit is generated by the standard AND-OR array which is programmable to some degree.
申请公布号 US4677318(A) 申请公布日期 1987.06.30
申请号 US19850722684 申请日期 1985.04.12
申请人 ALTERA CORPORATION 发明人 VEENSTRA, KERRY S.
分类号 H03K3/037;H03K19/173;H03K19/177;(IPC1-7):H03K19/177 主分类号 H03K3/037
代理机构 代理人
主权项
地址