Semiconductor memory device having a single line data bus and la

Details Semiconductor memory device having a single line data bus and la Semiconductor memory device having a single line data bus and la

1997-06-23

1999-11-02

Gossage, Glenn

Electrical computers and digital processing systems: memory

Storage accessing and control

711104, 711109, 711169, 36518905, 36518912, G06F 1300, G11C 700, G11C 1900

Patent

active

059788844

ABSTRACT:
A semiconductor memory device uses a wave pipeline system which can reduce a power consumption by reducing a current for charging a data bus between a memory core part and an output circuit. A single line data bus transmits read data output from the memory core part. A data bus drive circuit outputs the read read data to send to the single data bus. Each of a plurality of data latch circuits has a data input terminal connected to the data bus. A data input control circuit inputs the read data which is serially transmitted on the data bus to the data latch circuits in parallel in response to an operation of the data bus drive circuit. A data output control circuit outputs the latched read data in an order of latching by sequentially selecting outputs of the data latch circuits.

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