| 摘要 |
PROBLEM TO BE SOLVED: To provide a semiconductor memory and its data read method which can output data stably by making data read paths for read operation in which request for a frequency characteristic is large differ from those of read operation in which request for a frequency characteristic is relatively small. SOLUTION: This device is constituted of a memory cell array, and a differential amplifier and a latch circuit in which for first waiting time operation, each of a pair of signal outputted from the memory cell array is latched an outputted responding to an enable-signal, for second waiting time operation, voltage difference of each of a pair of signal outputted from the memory cell array is amplified and outputted responding to an enable-signal. Therefore, waiting time operation requiring a high frequency characteristic is discriminated from waiting time operation requiring no high frequency characteristic relatively, data read error can be reduced by outputting data through different data read paths.
|
