公开(公告)号：US5656949A

公开(公告)日：1997-08-12

申请号：US581064

申请日：1995-12-29

Applicant: Aaron S. Yip ,  Timothy M. Lacey ,  Anup K. Nayak ,  Rajiv Nema ,  Han-Kim Nguyen

Inventor： Aaron S. Yip ,  Timothy M. Lacey ,  Anup K. Nayak ,  Rajiv Nema ,  Han-Kim Nguyen

IPC: H03K19/177

CPC classification number: H03K19/177 ,  H03K19/17704

Abstract: A programmable circuit apparatus having a programmable circuit and an input/output circuit with a first terminal is provided. The programmable circuit apparatus includes a programming circuit, with a bus junction, for programming the programmable circuit. The programmable circuit apparatus further includes an isolation circuit having an isolation input, coupled to the first terminal, and an isolation output, coupled to the bus junction of the programming circuit. The isolation circuit further has an isolation control gate which can receive a control signal and in response to that signal, the control gate controllably couples the isolation input to the isolation output. The programmable circuit apparatus also includes an apparatus for testing the routing, the programming circuitry, and the programmable circuit with a minimal impact on the performance of the programmable circuit. The programmable circuit apparatus also has the ability to program three or more antifuses or other programmable elements simultaneously.

Abstract translation: 提供具有可编程电路和具有第一端子的输入/输出电路的可编程电路装置。 可编程电路装置包括具有用于编程可编程电路的总线结的编程电路。 可编程电路装置还包括隔离电路，该隔离电路具有耦合到第一端子的隔离输入端和耦合到编程电路总线结的隔离输出端。 隔离电路还具有可接收控制信号的隔离控制栅极，并且响应于该信号，控制栅极可控制地将隔离输入耦合到隔离输出端。 可编程电路装置还包括用于测试路由，编程电路和可编程电路的装置，对可编程电路的性能影响最小。 可编程电路装置还具有同时编程三个或多个反熔丝或其它可编程元件的能力。