摘要:
A semiconductor device includes a delay unit configured to delay an inputted clock to generate a delay clock, a selection unit configured to select and output one of the inputted clock and the delay clock, a delay locked loop configured to perform a delay locking operation using a signal delivered from the selection unit, and a selection control unit configured to control the selection unit in response to a comparison of one period of the inputted clock and a maximum delay value of the delay locked loop.
摘要:
A rail-to-rail comparator including a first comparison unit connected to a first terminal and configured to compare differential input signals to differential reference voltages; a second comparison unit connected to a second terminal and configured to compare the differential input signals to the differential reference voltages; and an output unit configured to be driven in response to a clock signal and to generate a complementary output signal according to comparison results of the first and second comparison units.
摘要:
A semiconductor device includes a delay unit configured to delay an inputted clock to generate a delay clock, a selection unit configured to select and output one of the inputted clock and the delay clock, a delay locked loop configured to perform a delay locking operation using a signal delivered from the selection unit, and a selection control unit configured to control the selection unit in response to a comparison of one period of the inputted clock and a maximum delay value of the delay locked loop.
摘要:
A delay locked loop circuit includes a delay locking unit configured to output a first internal clock and a second internal clock, a rising edge of which is synchronized with that of the first internal clock by delaying a compensated external clock for compensating a skew of a semiconductor memory device; a duty ratio compensation unit configured to generate the compensated external clock by compensating a duty ratio of an external clock of the semiconductor memory device and to compensate duty ratios of the first and second internal clocks; and a clock control unit configured to control an activation state of the second internal clock after the duty ratio compensation of the external clock.
摘要:
A delay locked loop circuit includes a delay locking unit configured to output a first internal clock and a second internal clock, a rising edge of which is synchronized with that of the first internal clock by delaying a compensated external clock for compensating a skew of a semiconductor memory device; a duty ratio compensation unit configured to generate the compensated external clock by compensating a duty ratio of an external clock of the semiconductor memory device and to compensate duty ratios of the first and second internal clocks; and a clock control unit configured to control an activation state of the second internal clock after the duty ratio compensation of the external clock.
摘要:
A delay locked loop circuit includes a delay locking unit configured to output a first internal clock and a second internal clock, a rising edge of which is synchronized with that of the first internal clock by delaying a compensated external clock for compensating a skew of a semiconductor memory device; a duty ratio compensation unit configured to generate the compensated external clock by compensating a duty ratio of an external clock of the semiconductor memory device and to compensate duty ratios of the first and second internal clocks; and a clock control unit configured to control an activation state of the second internal clock after the duty ratio compensation of the external clock.
摘要:
A multi-port memory device includes a plurality ports, a plurality of banks, a plurality of global data buses, first and second I/O controllers, and a test input/output (I/O) controller. The ports perform a serial I/O data transmission. The banks perform a parallel I/O data transmission with the ports. The global data buses are employed for transmitting data between the ports and the banks. The first I/O controller controls a serial data transmission between the ports and external devices. The second I/O controller controls a parallel data transmission between the ports and the global buses. The test I/O controller generates test commands based on a test command/address (C/A) inputted from the external devices and transmits a test I/O data with the global data bus during a test operation mode.
摘要:
A delay locked loop circuit includes a delay locking unit configured to output a first internal clock and a second internal clock, a rising edge of which is synchronized with that of the first internal clock by delaying a compensated external clock for compensating a skew of a semiconductor memory device; a duty ratio compensation unit configured to generate the compensated external clock by compensating a duty ratio of an external clock of the semiconductor memory device and to compensate duty ratios of the first and second internal clocks; and a clock control unit configured to control an activation state of the second internal clock after the duty ratio compensation of the external clock.
摘要:
Semiconductor memory device includes a cell array including a plurality of unit cells; and a test circuit configured to perform a built-in self-stress (BISS) test for detecting a defect by performing a plurality of internal operations including a write operation through an access to the unit cells using a plurality of patterns during a test procedure carried out at a wafer-level.
摘要:
Semiconductor memory device includes a cell array including a plurality of unit cells; and a test circuit configured to perform a built-in self-stress (BISS) test for detecting a defect by performing a plurality of internal operations including a write operation through an access to the unit cells using a plurality of patterns during a test procedure carried out at a wafer-level.