| 摘要 |
PURPOSE: An apparatus for preventing an improper read command is provided to prevent the improper read operation, by blocking a clock signal used when transmitting data from a sense amp to a pipe latch and a clock signal when transmitting data from the pipe latch to an output port. CONSTITUTION: A sense amp(310) reads data in a memory cell when a word line is enabled through an active command, and outputs the data when the first signal is enabled by a read command. An I/O sense amp(320) detects data from the sense amp, and amplifies the detected data. A pipe latch(330) latches data being output from the I/O sense amp according to a plurality of input control signals, and outputs the latched data through an output port according to a plurality of output control signals. An input control signal blocking unit(340) enables/disables the plurality of input control signals according to the control of a blocking signal. And an output control signal blocking unit(350) enables/disables the plurality of output control signals according to the control of the blocking signal.
|
