摘要:
Apparatus, method and program product detect an attempt to tamper with a microchip by determining that an electrical path comprising one or more connections and a metal plate attached to the backside of a microchip has become disconnected or otherwise altered. A tampering attempt may also be detected in response to the presence of an electrical path that should not be present, as may result from the microchip being incorrectly reconstituted. Actual and/or deceptive paths may be automatically selected and monitored to further confound a reverse engineering attempt.
摘要:
Apparatus, method and program product detect an attempt to tamper with a microchip by determining that an electrical path comprising one or more connections and a metal plate attached to the backside of a microchip has become disconnected or otherwise altered. A tampering attempt may also be detected in response to the presence of an electrical path that should not be present, as may result from the microchip being incorrectly reconstituted. Actual and/or deceptive paths may be automatically selected and monitored to further confound a reverse engineering attempt.
摘要:
A method of making an integrated circuit package includes forming a through hole in an integrated circuit and assembling a die containing the integrated circuit on a carrier so that the die is mechanically and electrically connected to the carrier. Thereafter, an underfill material is dispensed between the die and the carrier via the through hole.
摘要:
Apparatus, method and program product may detect an attempt to tamper with a microchip by detecting an unacceptable alteration in a measured capacitance associated with capacitance structures proximate the backside of a microchip. The capacitance structures typically comprise metallic shapes and may connect using through-silicon vias to active sensing circuitry within the microchip. In response to the sensed change, a shutdown, spoofing, self-destruct or other defensive action may be initiated to protect security sensitive circuitry of the microchip.
摘要:
A wirebond interconnect structure, having ground pads and signal pads, to which wirebonds are electrically coupled, disposed on a component, is provided and includes a first coating to insulate at least the wirebonds and the signal pads with at least the ground pads exposed, and a second coating, surrounding the first coating, in electrical communication with the ground pads. The first coating is sufficiently thick to achieve a consistent characteristic impedance when the second coating is applied.
摘要:
Method and apparatus and associated method of detecting microchip tampering may include a conductive element in electrical communication with multiple sensors for verifying that signal degradation occurs at an expected region of the conductive element. A detected variance from the expected region may automatically trigger an action for impeding an integrated circuit exploitation process.
摘要:
A method of serially connecting devices utilizing flexible circuits in a semi-stacking configuration includes positioning a first flexible circuit on a carrier, the first flexible circuit includes a bottom surface and a top surface, a portion of the bottom surface is mounted to the carrier while another portion of the bottom surface is elevated at a first angle with respect to the carrier; coupling a first device on a portion of the top surface of the first flexible circuit, the first device being elevated at the first angle; positioning a second flexible circuit on the carrier, the second flexible circuit having an upper surface and a lower surface, a portion of the lower surface is mounted to the carrier while another portion of the lower surface is elevated at a second angle with respect to the carrier and overlapped over a top surface portion of the first device; and coupling a second device on a portion of the upper surface of the second flexible circuit, the second device being elevated at the second angle.
摘要:
A circuit assembly includes a functional chip and a first capacitor. The functional chip includes a first logic island and a second logic island. The first capacitor is configured to be selectively coupled (e.g., at different times) to a first power supply terminal of the first logic island and a second power supply terminal of the second logic island.
摘要:
A circuit assembly includes a functional chip and a first capacitor. The functional chip includes a first logic island and a second logic island. The first capacitor is configured to be selectively coupled (e.g., at different times) to a first power supply terminal of the first logic island and a second power supply terminal of the second logic island.
摘要:
An apparatus for testing electrical continuity of a surface mounted (SMT) electrical board includes: a printed wiring board having a first surface and an opposite second surface; a conductive signal line disposed on each of the first and second surfaces of the printed wiring board; an electrical component disposed on and electrically connected to the conductive signal line on the first surface; and a through hole extending through the printed wiring board and the conductive signal line on the second surface of the printed wiring board exposing a surface side of the conductive signal line facing the first surface of the printed wiring board. The through hole is unplated in an inside bore defining the through hole and the through hole allows direct access to the conductive signal line on the first surface to test continuity of the conductive signal line on the first surface connected to the electrical component from the second surface of the printed wiring board.