Patent ID: 6507117
Filing Date: 2003-01-14
Classification: H01L

Abstract:
A semiconductor chip, comprising:an internal circuit formed on a semiconductor substrate; a chip connection pad formed on the semiconductor substrate and used for interchip connection to another semiconductor chip; an other-service-than-interchip-connection pad formed on the semiconductor substrate and used for other service than interchip connection; and a switching circuit formed on the semiconductor substrate for selectively connecting, to the internal circuit, the chip connection pad or the other-service-than-interchip-connection pad, wherein the switching circuit is arranged to disconnect the internal circuit from the other-service-than-interchip-connection pad and connect the internal circuit to the chip connection pad when the semiconductor chip is being connected to another semiconductor chip is being connected to another semiconductor chip through the chip connection pad, and is also arranged to disconnect the internal circuit from the chip connection pad and connect the internal circuit to the other-service-than-interchip-connection pad when the semiconductor chip is not being connected to another semiconductor chip through the chip connection pad.