Semiconductor memory device having select circuit
AssigneeRenesas Technology Corp.
InventorsYukiko Maruyama, Takashi Itou
Life of this patent
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Abstract
An input buffer circuit includes a first input buffer and a second input buffer. The first input buffer receives an external data signal and a reference potential to output an internal data signal. The second input buffer receives external data signals complementary to each other to output the internal data signal. The input buffer circuit causes either the first or second input buffer to operate in response to a control signal outputted from a control circuit. Due to this, this semiconductor memory device can correspond to various types of data processing systems.
Claims9
A semiconductor memory device comprising:
- an input buffer for receiving a first data signal inputted externally, a second data signal complementary to said first data signal and inputted externally, and a reference signal, and generating an internal data signal;
- and
- a select circuit for selecting a signal used when said input buffer generates said internal data signal, from said second data signal and said reference signal.
A semiconductor memory device comprising:
- a first input buffer which receives a first data signal inputted from an outside of the memory and a reference signal, and which generates a first internal data signal;
- a second input buffer which receives a second data signal inputted from the outside and complementary to said first data signal, and said reference signal, and which generates a second internal data signal;
- and
- an internal circuit which receives a strobe signal inputted from the outside for fetching said first and second data signals, and which receives said first and second internal data signals.
Dependencies are inferred from the claim text.