Read operation for semiconductor memory devices
First Claim
1. A method of performing a read operation in a memory device, the memory device comprising a NAND flash memory having a memory cell array and a page buffer;
- and a data RAM configured to output data in response to a clock signal received from a host, wherein the data RAM comprises a first data RAM and a second data RAM, the method comprising;
sensing data stored in one page of the memory cell array in the page buffer;
transferring the sensed data from the page buffer to the data RAM in multiple blocks via a corresponding number of transfer operations by transferring a first block of sensed data from the page buffer to the first data RAM, and afterwards, transferring a second block of sensed data from the page buffer to the second data RAM; and
reading the transferred data from the data RAM in response to the host clock signal,wherein a read-out operation for the transferred data commences during any one of the plurality of transfer time periods.
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Abstract
Disclosed is a method of performing a read operation in a NAND/RAM semiconductor memory device. The semiconductor memory device comprises a NAND flash memory device having a memory cell array and a page buffer, and a data RAM outputting data in response to a clock signal received from a host. The method comprising; sensing data stored in one page of the memory cell array in the page buffer, transferring the sensed data from the page buffer to the data RAM in multiple blocks via a corresponding number of transfer operations, and reading the transferred data from the data RAM in response to the host clock signal, wherein a read-out operation for the transferred data commences during any one of the plurality of transfer time periods.
19 Citations
11 Claims
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1. A method of performing a read operation in a memory device, the memory device comprising a NAND flash memory having a memory cell array and a page buffer;
- and a data RAM configured to output data in response to a clock signal received from a host, wherein the data RAM comprises a first data RAM and a second data RAM, the method comprising;
sensing data stored in one page of the memory cell array in the page buffer; transferring the sensed data from the page buffer to the data RAM in multiple blocks via a corresponding number of transfer operations by transferring a first block of sensed data from the page buffer to the first data RAM, and afterwards, transferring a second block of sensed data from the page buffer to the second data RAM; and reading the transferred data from the data RAM in response to the host clock signal, wherein a read-out operation for the transferred data commences during any one of the plurality of transfer time periods. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- and a data RAM configured to output data in response to a clock signal received from a host, wherein the data RAM comprises a first data RAM and a second data RAM, the method comprising;
Specification