Memory device for stabilizing internal voltage and method of stabilizing internal voltage of the same
A method controls a memory device that includes a page buffer circuit comprising a plurality of page buffers each comprising at least one latch. The method includes generating by an internal voltage circuit at least one internal voltage among internal voltages used for an operation of the page buffer circuit, the internal voltage circuit providing the at least one internal voltage to the page buffer circuit; and providing to the page buffer circuit a control signal for forming an electrical connection between the internal voltage circuit and a first electrical node of a first page buffer unused for buffering in the page buffer circuit during a set operation for a first latch of a second page buffer.
1. A method of controlling a memory device that includes a page buffer circuit comprising a plurality of page buffers each comprising at least one latch, the method comprising:
generating by an internal voltage circuit at least one internal voltage among internal voltages used for an operation of the page buffer circuit, the internal voltage circuit providing the at least one internal voltage to the page buffer circuit; and
providing to the page buffer circuit a control signal for forming an electrical connection between the internal voltage circuit and a first electrical node of a first page buffer unused for buffering in the page buffer circuit during a set operation for a first latch of a second page buffer.
2. The method of claim 1 , further comprising:
generating the control signal for an electrical connection of the first electrical node of the first page buffer to the internal voltage circuit during a cache latch set preparation interval for the first latch.
3. The method of claim 1 , further comprising:
generating the control signal for disconnecting the electrical connection between the first electrical node of the first page buffer and the internal voltage circuit after the first latch has been set.
4. The method of claim 1 , wherein:
the first latch includes:
a cache latch configured to temporarily store data in a data read operation mode of the memory device.
5. The method of claim 1 , wherein:
each of the plurality of page buffers is configured to:
sense data through a develop operation of each sense-out node in a data read operation mode of the memory device, and
the first electrical node includes:
a first sense-out node corresponding to the page buffer comprising the first latch.
6. The method of claim 5 , wherein:
each of the plurality of page buffers further comprises:
a first transistor, which when turned on, provides an electrical path between each sense-out node and the internal voltage circuit, and further comprising:
providing to the first transistor of the first page buffer a control signal for turning on the first transistor during the set operation for the first latch of the second page buffer.
7. The method of claim 6 , wherein:
the first transistor comprises:
a p-type metal oxide semiconductor field effect transistor (MOSFET).
8. The method of claim 1 , wherein:
the page buffer circuit comprises:
a verify signal line configured to transfer a signal for verifying a pass/fail of data sensed by the plurality of page buffers, and
the first electrical node includes:
a verify signal node corresponding to the verify signal line.
9. The method of claim 8 , wherein
the verify signal node includes:
an electrical node connected to an n-type metal oxide semiconductor (MOS) transistor in a sensing latch included in the plurality of page buffers.
10. The method of claim 9 , wherein
the page buffer circuit further comprises:
a first transistor, which when turned on, provides an electrical path between the verify signal node and the internal voltage circuit, and further comprising:
providing to the first transistor a control signal for turning on the first transistor during the set operation for the first latch.
11. A method of stabilizing an internal voltage of a memory device,
the method comprising:
before a latch set operation for a first latch included in a first page buffer of a page buffer circuit in the memory device is initiated, electrically connecting a first electrical node of a second page buffer of the page buffer circuit, the first electrical node floated in the page buffer circuit during the latch set operation, to an internal voltage circuit configured to provide an internal voltage to the page buffer circuit;
initiating the latch set operation for the first latch; and
disconnecting the electrical connection between the first electrical node and the internal voltage circuit after the first latch has been set.
12. The method of claim 11 , wherein:
the electrically connecting of the first electrical node to the internal voltage circuit comprises:
initiating a latch set preparation operation for the first latch; and
electrically connecting, after the latch set preparation operation is initiated, the first electrical node to the internal voltage circuit.
13. The method of claim 11 , wherein:
the memory device comprises:
a first transistor, which when turned on, provides an electrical connection between the first electrical node and the internal voltage circuit,
the electrically connecting of the first electrical node to the internal voltage circuit comprises:
turning on the first transistor by providing a control signal of a first logic level to the first transistor, and
the disconnecting of the electrical connection between the first electrical node and the internal voltage circuit comprises:
turning off the first transistor by providing a control signal of a second logic level to the first transistor.
14. The method of claim 11 , wherein:
the electrically connecting of the first electrical node to the internal voltage circuit comprises:
increasing capacitance of an equivalent capacitor connected to the internal voltage circuit by electrically connecting the first electrical node to the internal voltage circuit.
15. The method of claim 11 , wherein:
the first electrical node includes:
a sense-out node corresponding to a page buffer comprising the first latch.
16. The method of claim 11 , wherein:
the page buffer circuit comprises:
a verify signal line configured to transfer a signal for verifying a pass/fail of sensed data, and
the first electrical node includes:
a verify signal node corresponding to the verify signal line.
17. A method for a memory device comprising a first memory region and a second memory region
the memory device comprising:
a first core circuit comprising an internal voltage circuit configured to generate an internal voltage required by a first page buffer circuit corresponding to a first memory region, the first core circuit being configured to control the first memory region; and
a second core circuit configured to control the second memory region; and
the method comprising:
generating a control signal for forming an electrical connection between the internal voltage circuit and a first electrical node included in a second page buffer circuit in the second core circuit during a set operation for a cache latch included in the first page buffer circuit.
18. The method of claim 17 , further comprising:
generating a control signal for electrically connecting the first electrical node to the internal voltage circuit during a set preparation operation interval for the cache latch.
19. The method of claim 17 , wherein
the memory device comprises a plurality of memory mats,
the first memory region is a memory mat selected among the plurality of memory mats, and
the second memory region is an unselected memory mat among the plurality of memory mats.
20. The method of claim 17 , wherein:
the first electrical node comprises:
at least one of a sense-out node corresponding to a plurality of page buffers included in the second page buffer circuit and a verify signal node corresponding to a verify signal line for detecting data sensed by the second page buffer circuit.