Apparatus and method for controlling memory device
AssigneeSK hynix Inc.
InventorTae-Hoon KIM
Life of this patent
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Abstract
An apparatus may include: a memory device suitable for writing data while erasing at least one monitor cell among a plurality of memory cells in a write mode, and reading the at least one monitor cell by supplying a monitor voltage in a monitor mode; and a controller suitable for transmitting a monitor command and address information for reading the at least one monitor cell to the memory device in the monitor mode, and determining whether to perform a reclaim operation based on the values of the at least one monitor cell read by the memory device.
Claims20
An apparatus comprising:
- a memory device suitable for writing data while erasing at least one monitor cell among a plurality of memory cells in a write mode, and reading the at least one monitor cell in a monitor mode;
- and
- a controller suitable for transmitting a monitor command and address information for reading the at least one monitor cell to the memory device in the monitor mode, and determining whether to perform a reclaim operation based on the values of the at least one monitor cell read by the memory device.
An apparatus comprising:
- a controller suitable for transmitting a monitor command and address information at a monitoring cycle;
- and
- a memory device suitable for writing data while erasing the at least one monitor cell among a plurality of memory cells in a write mode, supplying a monitor voltage to the at least one monitor cell when the monitor command and address information are received, counting the number of read monitor cells, and transmitting a fail signal to the controller when the count value exceeds a threshold value,
- wherein the controller sets the corresponding region of the memory device to a reclaim region when the fail signal is received.
A method for controlling a memory device, comprising:
- transmitting a write command, address information and data to a memory device having at least one monitor cell set to one or more memory cells at a specific position in a write mode, the data being configured to erase the at least one monitor cell;
- and
- performing a monitor mode
- wherein the monitor mode comprises:
- transmitting a monitor command and address information of a monitoring region to the memory device at a monitoring cycle;
- receiving the values of the at least one monitor cell read by a monitor voltage supplied to the monitoring region in the memory device;
- and
- determining a read disturb amount by counting the number of monitor cells changed from an erase state among the at least one monitor cells read in the memory device.
An operating method of a memory device, the memory device including a memory cell array in which memory cells at a specific position are set to monitor cells written in an erase state, the operating method comprising:
- receiving a monitor command and address information at a monitoring cycle;
- supplying a monitor voltage to at least one monitor cell of a region corresponding to the address information when the monitor command is received;
- reading data of the at least one monitor cell and transmitting a fail signal for reclaiming the corresponding region when the number of monitor cells changed from an erase state exceeds a preset threshold value.
Dependencies are inferred from the claim text.