Digital integrated circuit

Abstract

Abstract PURPOSE:To actuate plural circuit within an integrated circuit IC just with a single input terminal by applying the 1st or 2nd pulse signal delivered from a digital IC again to this IC. CONSTITUTION:An input buffer 5 is connected to an input terminal 2 for external signal set within a digital IC1. The buffer 5 is connected to an AND gate 6 and this gate 6 is connected to the 1st glitch deleting circuit 7. The circuit 7 is connected to the 1st pulse detecting circuit 8 and the circuit 8 is connected to the 1st internal circuit 9 containing a switch. Furthermore an AND gate 11, the 2nd glitch deleting circuit 12, the 2nd pulse detecting circuit 13 and the 2nd internal circuit 14 containing a switch are connected successively to the buffer 5. The signal of the 1st pulse output circuit 16 is delivered via a buffer 18 and at the same time supplied to the gate 6 via a buffer 19 and also supplied to the gate 11 via an inverter 15. Thus plural circuits are actuated just with a single input terminal.

Inventors

• 👤 Masaharu Takeuchi
• 👤 竹内　雅春
• 👤 Hiromi Chiba
• 👤 千葉　博美

Bibliographic Details