摘要:
The memory device includes a memory cell array, an access control circuit configured to access the memory cell array, a control signal generation circuit configured to generate a control signal for controlling an operation of the access control circuit, and a variable delay circuit configured to generate a delay signal by variably delaying a clock signal according to an external signal. The control signal generation circuit adjusts an activation timing of the control signal in response to the delay signal.
摘要:
A fin Field Effect Transistor (finFET) can include a source region and a drain region of the finFET. A gate of the finFET can cross over a fin of the finFET between the source and drain regions. First and second silicide layers can be on the source and drain regions respectively. The first and second silicide layers can include respective first and second surfaces that face the gate crossing over the fin, where the first and second surfaces are different sizes.
摘要:
A fin Field Effect Transistor (finFET) can include a source region and a drain region of the finFET. A gate of the finFET can cross over a fin of the finFET between the source and drain regions. First and second silicide layers can be on the source and drain regions respectively. The first and second silicide layers can include respective first and second surfaces that face the gate crossing over the fin, where the first and second surfaces are different sizes.
摘要:
A memory device capable of reducing refresh noise generated in refreshing a plurality of memory cell blocks at the same time is provided. The memory device includes a plurality of memory cell blocks, a block select unit, and a row decoder. Each of memory cell blocks includes a plurality of sub-memory cell array blocks, and the block select unit outputs a plurality of block select signals corresponding to a plurality of control signals generated by a block select address. The row decoder selects at least one memory cell block corresponding to at least one block select signal activated among the plurality of the block select signals and activates a word line of a memory cell block selected by responding to a row address.
摘要:
In a semiconductor memory device having redundancy capability, a control signal generating circuit is included respectively for each of a predetermined number of redundant column select signal lines, to generate a predetermined number of block control signals by dividing a plurality of memory cell array blocks into a predetermined number of groups. A predetermined number of defective enable signal generating circuits are included for each of the redundant column select signal lines, to generate a predetermined number of redundant enable signals when defective addresses are input. The redundant column select signal lines are established for defective addresses based on the block control signals. A selection circuit is included respectively for each of the redundant column select signal lines to generate a select signal for selecting a redundant column select signal line corresponding to each of a predetermined number of redundant enable signals, in response to the block control signals. The efficiency of redundancy is thus improved by performing a redundancy operation by dividing a plurality of memory cell arrays into a predetermined number of groups for each of redundant column select signals.