Pre-fetch circuit of semiconductor memory apparatus and...

Details Pre-fetch circuit of semiconductor memory apparatus and... Pre-fetch circuit of semiconductor memory apparatus and...

2008-07-18

2010-10-12

Shin, Christopher B (Department: 2181)

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral adapting

C712S207000, C712S237000, C711S213000

Reexamination Certificate

active

07814247

ABSTRACT:
A pre-fetch circuit of a semiconductor memory apparatus can carry out a high-frequency operating test through a low-frequency channel of a test equipment. The pre-fetch circuit of a semiconductor memory apparatus can includes: a pre-fetch unit for pre-fetching data bits in a first predetermined number; a plurality of registers provided in the first predetermined number, each of which latches a data in order or a data out of order of the pre-fetched data in response to different control signals; and a control unit for selectively activating the different control signals in response to a test mode signal, whereby some of the registers latch the data out of order.

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