Patent ID: 6525560
Filing Date: 2003-02-25
Classification: H03K

Abstract:
A device that is configured in response to a bit stream, the device comprising:a die having a first bond pad and a second bond pad, each being configured to be weakly pulled to a first voltage during normal operation of the device; a package that encloses the die, the package having an external pad configured to receive a second voltage during normal operation of the device, the second voltage representing a different logic value than the first voltage; a conductor coupling one and only one of first and second bond pads to the external pad, wherein the other one of the first and second bond pads is left floating and enclosed by the package; a logic circuit on the die coupled to the first bond pad and the second bond pad, wherein the logic circuit enables the device to be configured in response to a first type of bit stream if the first bond pad is coupled to the conductor, and wherein the logic circuit enables the device to be configured only in response to a second type of bit stream if the second bond pad is coupled to the conductor.