Semiconductor device suitable for system in package

Details Semiconductor device suitable for system in package Semiconductor device suitable for system in package

2005-12-20

2005-12-20

Ho, Hoai (Department: 2818)

Static information storage and retrieval

Read/write circuit

Including reference or bias voltage generator

C365S189050, C365S201000

Reexamination Certificate

active

06977849

ABSTRACT:
In each of output buffer circuits arranged corresponding to respective output pads, a first output buffer having small current driving capability for a normal operation mode and a second output buffer having large current driving capability for a test operation mode are arranged in parallel with each other. One of the first and second output buffers is enabled and the other is set to an output high impedance state alternatively in accordance with a mode designating signal. Thus, an output buffer circuit capable of driving an output pad with optimal driving capabilities in a normal operation mode and in a test operation mode in a semiconductor device for use in a system in package is implemented.

REFERENCES:
patent: 6304503 (2001-10-01), Akamatsu et al.
patent: 6442716 (2002-08-01), Kim
patent: 6538412 (2003-03-01), Klose et al.
patent: 6580092 (2003-06-01), Tomoshima
patent: 07-273632 (1995-10-01), None

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