Abstract: An inverted pyramid multi-die package provides, for each die pad on an upper die, a rigid support underneath extending to a substrate. Such configuration reduces both the wire sweep and weakening torques. A lower die, smaller than the upper die in at least one dimension, may be positioned between the upper die and the substrate. The two dice may or may not contact each other, or they may contact each other via an intermediate spacer. The lower die may be a flip chip. The multi-die package may be fashioned without the lower die or the substrate. Wire sweep is reduced, because the second die is smaller than the upper die in at least one dimension. Weakening torques are reduced, because spacers at the periphery of the upper die absorb the impact of bonding wires thereon.

Abstract: An inverted pyramid multi-die package provides, for each die pad on an upper die, a rigid support underneath extending to a substrate. Such configuration reduces both the wire sweep and weakening torques. A lower die, smaller than the upper die in at least one dimension, may be positioned between the upper die and the substrate. The two dice may or may not contact each other, or they may contact each other via an intermediate spacer. The lower die may be a flip chip. The multi-die package may be fashioned without the lower die or the substrate. Wire sweep is reduced, because the second die is smaller than the upper die in at least one dimension. Weakening torques are reduced, because spacers at the periphery of the upper die absorb the impact of bonding wires thereon.

Abstract: A microelectronic apparatus and method for generating random binary words including at least one clocked pseudorandom binary number sequence generator normally operative to generate a cyclic output sequence of binary numbers, each number including a string of binary symbols, the cyclic output sequence including a basic sequence which is generated repeatedly, at least one bit stream generator generating a clocked bit stream including a stream of binary symbols of a first type occasionally interrupted by a binary symbol of a second type, wherein a first varying time interval between the occasional interruptions is intractably correlated to the output sequence of the number sequence generator, wherein each occurrence of an interruption of the stream of binary symbols of the first type by a binary symbol of the second type causes a pseudorandom modification of the cyclic output sequence of the number sequence generator and a sampling device operative to sample the cyclic output sequence of binary numbers thereby

Abstract: A microelectronic apparatus and method for generating random binary words including at least one clocked pseudorandom binary number sequence generator normally operative to generate a cyclic output sequence of binary numbers, each number including a string of binary symbols, the cyclic output sequence including a basic sequence which is generated repeatedly, at least one bit stream generator generating a clocked bit stream including a stream of binary symbols of a first type occasionally interrupted by a binary symbol of a second type, wherein a first varying time interval between the occasional interruptions is intractably correlated to the output sequence of the number sequence generator, wherein each occurrence of an interruption of the stream of binary symbols of the first type by a binary symbol of the second type causes a pseudorandom modification of the cyclic output sequence of the number sequence generator and a sampling device operative to sample the cyclic output sequence of binary numbers thereby