Patent ID: 6707746
Filing Date: 2004-03-16
Classification: G11C

Abstract:
In a semiconductor circuitry, having the number of available I/O (input/output) channels selected by bond-pad connections, circuitry for changing the initial selected number of I/O channels comprising:at least one bond-option circuit coupled to a voltage potential and having an enable/disable input, and an output signal coupled to I/O channel selection bond-pad; at least one latch fuse circuit coupled to a voltage potential and having an enable/disable input, and an output signal connected to said I/O channel selection bond-pad; said at least one latch fuse circuit further connected to receive an enable signal when said at least one bond-option circuit receives a disable signal, and to receive a disable signal when said at least one bond-option circuit receives an enable signal; and an enable latch fuse circuit having a fuse, said enable latch fuse circuit for providing one of the enable/disable inputs to said at least one bond-option circuit and providing the other one of said enable/disable signals to said at least one latch fuse circuit when said fuse in said enable latch fuse circuit is not blown, and providing said one of the enable/disable inputs to said at least one latch fuse circuits and providing said other one of the enable/disable inputs to said at least one bond-option circuit when said fuse in said enable latch fuse circuit is blown.