摘要:
A method of programming a dual cell memory device having a first charge storing cell and a second charge storing cell. The method can include applying an initial program pulse to the memory device; comparing the threshold voltage of the memory device with a verify threshold voltage; and if the threshold voltage of the memory device is less than the verify threshold voltage, applying a second program pulse to the memory device during which at least one condition of the second program pulse is modified from the initial program pulse.
摘要:
In a semiconductor manufacturing process for manufacturing memory devices a method of screening hot temperature programmability rejects in memory devices during wafer sort at room temperature that would be rejected at class test at high temperature. All cells in the memory device are subjected to a first sequence of programming pulses at a voltage lower than the standard programming voltage. The number of pulses in the first sequence of programming pulses is from 1-5. Those die that verify as having been successfully programmed are passed. Those die that do not verify as having been programmed are subjected to a second sequence of programming pulses at a voltage lower than the standard programming voltage. The number of pulses in the second sequence of programming pulses is from 10 to 15 pulses. Those that verify as being programmed are marked as good and those that do not are repaired and retested.
摘要:
In a semiconductor manufacturing process for manufacturing memory devices a method of screening hot temperature erase rejects in memory devices during wafer sort at room temperature that would be rejected at class test at high temperature. Selected cells of the memory device are subjected to a first sequence of erasure pulses at a high voltage until the selected cells are verified erased or until a first maximum number of erasure pulses has been reached, recording the number of pulses required to erase the selected cells, reading and repairing any defective memory cells, and subjecting all cells to a second sequence of erasure pulses until all cells are verified erased or until a maximum number of pulses has been reached wherein the second maximum number is a multiple of the recorded number.
摘要:
The present invention relates generally to antifugal compositions. In an embodiment, the antifungal compositions are effective for application to nails and surrounding skin, and comprise at least one volatile solvent, at least one film forming substance, and at least one pyrimidone derivative of formula I, such as albaconazole. These compositions are capable of treating an infection caused by fungi, such as onychomychosis.
摘要:
The present invention relates to a method of treating a fungal condition caused by T. rubrum, by administering a composition comprising a fatty acid monoester of glycerol. According to an embodiment, the fatty acid monoester of glycerol is 1-monocaprin. According to another embodiment, the fungal condition is onychomycosis.
摘要:
A non-volatile memory read circuit having adjustable current sources to provide end of life simulation. A flash memory device comprising a reference current source used to provide a reference current for comparison to the current of a memory cell being read, includes an adjustable current source in parallel with the memory cell being read, and an adjustable current source in parallel with the reference current source. The current from the memory cell, reference current source, and their parallel adjustable current sources are input to cascode circuits for conversion to voltages that are compared by a sense amplifier. The behavior of the cascode circuits and sense amplifier in response to changes in the memory cell and reference current source may be evaluated by adjusting the adjustable current sources so that the combined current at each input to the sense amplifier simulates the current of the circuit after aging or cycling.
摘要:
A method of utilizing Fast Chip Erase to screen endurance rejects. Multiple sectors in a device are selected and a time necessary to program all cells in the sectors is monitored and if the monitored time exceeds a first time, the device fails. A time necessary to erase all the cells without any overerased cells is monitored and if the time exceeds a second time, the device fails. A time necessary to correct overerased cells is monitored and if the time exceeds a third time, the device fails. The total time from erase until overerase correction is achieved is monitored and if the total time exceeds a fourth time, the device fails. The total time to determine erasability is monitored and if this time exceeds a fifth time, the device fails.
摘要:
An erase methodology of flash memory cells in a multi-bit memory array with bits disposed in normal and complimentary locations. An erase verify of bits in the normal locations is performed and if a bit in the normal location fails and if the maximum erase pulse count has not been reached, erase pulses are applied to both the normal bit and the complimentary bit. An erase verify of bits in the complimentary locations is performed and if a bit in the complimentary location fails and if the maximum erase pulse count has not been reached, erase pulses are applied to both the complimentary and the normal bit locations. If the bits pass the erase verify, the bits are subjected to a soft programming verify. If the bits are overerased and if the soft programming pulse count has not been reached a soft programming pulse is applied to the overerased bit.
摘要:
A method of programming a dual cell memory device having a first charge storing cell and a second charge storing cell. According to one aspect of the method, the method can include over-erasing the first and second charge storing cells to shift an erase state threshold voltage of the memory device to be lower than a natural state threshold voltage. According to another aspect of the method, the method can include programming the first and second charge storing cells to the same data state and verifying that the second programmed charge storing cell stores charge corresponding to the data state. If the verification fails, both charge storing cells can be re-pulsed.
摘要:
A method of testing Flash memory devices by performing wafer sort testing on main array cells and redundancy array cells of the Flash memory device and performing class testing on redundancy array cells only. There is a major savings of testing time with no decrease in quality of the final product.