ADJUSTING LATENCY IN A SCAN CELL

Embodiments herein describe the design of a scan cell within an integrated circuit. The scan cell operates in either a test mode or a normal functional mode according to a scan enable signal. The scan cell comprises delay logic including a plurality of delay elements, e.g., a plurality of transistor...

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Hauptverfasser: GOPALAKRISHNASETTY Raghu G, DOUSKEY Steven M, KUSKO Mary P
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Embodiments herein describe the design of a scan cell within an integrated circuit. The scan cell operates in either a test mode or a normal functional mode according to a scan enable signal. The scan cell comprises delay logic including a plurality of delay elements, e.g., a plurality of transistors. The delay logic activates the delay elements only when the scan cell operates in the test mode. The delay elements are activated to change a scan latency of the scan cell. The scan latency of the scan cell is increased to mitigate or prevent hold violations.