Semiconductor storage device

Details Semiconductor storage device Semiconductor storage device

2006-09-15

2008-09-16

Nguyen, VanThu (Department: 2824)

Static information storage and retrieval

Read/write circuit

Having particular data buffer or latch

C365S189020, C365S219000, C365S233100

Reexamination Certificate

active

07426144

ABSTRACT:
A semiconductor storage device comprising: a transfer control circuit for prefetching data of a predetermined number of bits stored in a memory array in response to a read command, and transferring L bits of the prefetched data in parallel to an internal bus in synchronization with an internal clock; and an output buffer circuit which includes L FIFO buffers each for latching each bit of the L bits input from the internal bus and extracts stored data from each of the L FIFO buffers in accordance with an input sequence in synchronization with an external clock so as to transfer the data serially to outside, wherein each of the L FIFO buffers includes an M-bit latch circuit and an N-bit latch circuit, and paths of the M-bit and N-bit latch circuits can be selectively switched.

REFERENCES:
patent: 5999458 (1999-12-01), Nishimura et al.
patent: 6914829 (2005-07-01), Lee
patent: 2001-243770 (2001-09-01), None

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