Method and apparatus for reduced pin count package connection verification
A method and apparatus for testing the chip-to-package connectivity of a common I/O of a semiconductor chip is disclosed which uses reduced pin count testing methods. The method includes driving a test signal transition onto a control pad of a semiconductor chip with a weak driver and comparing the...
Gespeichert in:
Hauptverfasser: | , |
---|---|
Format: | Patent |
Sprache: | eng |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | A method and apparatus for testing the chip-to-package connectivity of a common I/O of a semiconductor chip is disclosed which uses reduced pin count testing methods. The method includes driving a test signal transition onto a control pad of a semiconductor chip with a weak driver and comparing the transition rise time with a threshold value. For an I/O with a faulty chip-to-package connection, the rise time is much faster than for an I/O with a completed chip-to-package connection. Additional impedances may also be added to the tester fixturing to increase the sensitivity of the test equipment to the capacitance of the I/O connections. |
---|