Apparatus and method for controlling enable time of signal controlling operation of data buses of memory device

1. A method for controlling an enable time of a signal controlling an operation of data buses of a memory device, the method comprising the steps of:

(a) generating a first signal having a first pulse width according to a burst operation command;

(b) generating N- 1 number of second signals having a second pulse width, in which N is a burst length;

(c) receiving the first signal and the second signals, detecting and receiving a clock signal of the memory device for modulating the pulse width output of the logically operated first signal and the second signals, and outputting third signals; and

(d) changing the pulse width of the signal controlling the operation of data buses that connect a bit line sense amplifier with a data sense amplifier using the logically operated third signals;

wherein the pulse width of the signal controlling the operation of the data buses is automatically changed according to a frequency of the clock signal.

2. The method as claimed in claim 1 , further comprising a step of additionally automatically controlling the pulse width of the third signal by using an address signal in step (c).

3. A method for controlling an enable time of signal controlling an operation of data buses of a memory device, the method comprising the steps of:

(a) receiving an input signal;

(b) detecting and receiving a clock signal provided to the memory device for modulating the pulse width output of the logically operated input signal, and outputting a first signal; and

(c) changing the pulse width of the signal controlling the operation of data buses that connect a bit line sense amplifier with a data sense amplifier by using the logically operated first signal.

4. The method as claimed in claim 3 , further comprising a step of additionally controlling the pulse width of the first signal by using an address signal in step (b).

5. A method for controlling an enable time of a signal controlling an operation of data buses of a memory device, the method comprising the steps of:

(a) generating a first signal in response to a burst operation command, the first signal having a first pulse width;

(b) generating and receiving the first signal to generate N- 1 number of second signals each second signal having a second pulse width such that the first and second signals form N strobe pulse signals in which each strobe pulse signal has a strobe pulse width, in which N is a burst length;

(c) receiving the N strobe pulse signals, a clock signal, a test mode signal and a plurality of address signals, and automatically changing the strobe pulse width of each strobe pulse signal as a function of the clock signal, the test mode signal and the address signals wherein

when not in a test mode induced by a first level of the test mode signal, changing the strobe pulse width of each strobe pulse signal as a function of the clock signal by controlling switching around and through various delay paths that the N strobe pulse signals traverse,

when in the test mode induced by a second level of the test mode signal, changing the pulse width of each strobe pulse signal as a function of the address signals by controlling switching around and through other delay paths that the N strobe pulse signals traverse; and

(d) controlling data bus operations that connects a bit line sense amplifier with a data sense amplifier using the logically operated N strobe pulse signals having the changed pulse widths.