摘要:
Memory devices and methods are disclosed, including a method involving erasing a block of memory cells. After erasing the block, and before subsequent programming of the block, a number of bad strings in the block are determined based on charge accumulation on select gate transistors. The block is retired from use if the number of bad strings exceeds a threshold. Additional embodiments are disclosed.
摘要:
Memory devices and methods are disclosed, including a method involving erasing a block of memory cells. After erasing the block, and before subsequent programming of the block, a number of bad strings in the block are determined based on charge accumulation on select gate transistors. The block is retired from use if the number of bad strings exceeds a threshold. Additional embodiments are disclosed.
摘要:
Memory devices and methods are disclosed, such as devices configured to apply a first program inhibit bias to data lines during a first portion of a program operation and to apply a second program inhibit bias to data lines during a second portion of the program operation. The second program inhibit bias is greater than the first program inhibit bias.
摘要:
Memories and their memory arrays are disclosed. One such memory array has a string of series-coupled memory cells, a non-programmable select gate coupled in series to a first end of the string of series-coupled memory cells, and a programmable select gate coupled in series to a second end of the string of series-coupled memory cells.
摘要:
Erase operations and apparatus configured to perform the erase operations are suitable for non-volatile memory devices having memory cells arranged in strings. One such method includes biasing select gate control lines of a string of memory cells to a first bias potential, biasing access lines of a pair of the memory cells to a second bias potential and biasing access lines of one or more remaining memory cells to a third potential. A ramping bias potential is applied to channel regions of the string of memory cells substantially concurrently with or subsequent to biasing the select gate control lines and the access lines, and floating the select gate control lines in response to the ramping bias potential reaching a release bias potential between an initial bias potential of the ramping bias potential and a target bias potential of the ramping bias potential.
摘要:
Memory devices and methods are disclosed, such as devices configured to apply a first program inhibit bias to data lines during a first portion of a program operation and to apply a second program inhibit bias to data lines during a second portion of the program operation. The second program inhibit bias is greater than the first program inhibit bias.
摘要:
Erase operations and apparatus configured to perform the erase operations are suitable for non-volatile memory devices having memory cells arranged in strings. One such method includes biasing select gate control lines of a string of memory cells to a first bias potential, biasing access lines of a pair of the memory cells to a second bias potential and biasing access lines of one or more remaining memory cells to a third potential. A ramping bias potential is applied to channel regions of the string of memory cells substantially concurrently with or subsequent to biasing the select gate control lines and the access lines, and floating the select gate control lines in response to the ramping bias potential reaching a release bias potential between an initial bias potential of the ramping bias potential and a target bias potential of the ramping bias potential.
摘要:
Memories and their memory arrays are disclosed. One such memory array has a string of series-coupled memory cells, a non-programmable select gate coupled in series to a first end of the string of series-coupled memory cells, and a programmable select gate coupled in series to a second end of the string of series-coupled memory cells.