摘要:
An operation unit includes a case and an operation member molded integrally through injection molding. The operation member includes an outer surface and a slide portion supported by the case. The slide portion is slidable and movable relative to the case. The operation member further includes a knob operated by an operator, a parting line formed continuously from the slide portion to the knob along the outer surface, and a ridge line formed on the outer surface. At least part of the parting line is formed along the ridge line.
摘要:
A non-volatile semiconductor memory device includes: an array of electrically rewritable nonvolatile data storage memory cells each having a transistor structure with a control gate; reference current source circuit configured to generate a first reference current adaptable for use during an ordinary read operation and a second reference current for use during a verify-read operation for data status verification in one of writing and erasing events; a sense amplifier configured to compare read currents of a selected memory cell as selected during the ordinary read operation and the verify-read operation with the first and second reference currents respectively to thereby perform data detection; and a driver configured to give an identical voltage to the control gate of the selected memory cell presently selected during the ordinary read operation and the verify-read operation.
摘要:
There is disclosed a semiconductor integrated circuit device comprising a memory cell array, row decoder, sense amplifier, column gate with two or more stages connected in series, column gate driving circuit, data latch, multiplexer, and address control circuit, and the multiplexer sequentially selects data corresponding to a predetermined address from a plurality of data latched by the data latch. The address control circuit reverses a driving signal for driving at least one stage of the column gate with two or more stages connected in series and selects the columns designated by the next selected plurality of addresses, while the multiplexer sequentially selects the data corresponding to the predetermined address.
摘要:
A lamp holder 11 is made of white synthetic resin by molding such as injection molding. A reflection sheet 12 made of high-reflectance material such as silver or aluminum has a central portion 12a cut out and is affixed to an inner surface 11a of the lamp holder 11. The light reached the inner surface of the lamp holder 11 of light emitted from a lamp 1 is regularly reflected by the reflection sheet 12 and is diffusively reflected by the cutout portion of the reflection sheet 12. A considerable part of the light reflected on the white surface reaches the vicinity of electrode portions 1a of a discharge tube 1 to enter from an incidence end surface of a light guide in the vicinity of electrode portions 1a. Thus, the difference of light-supplying power between the central portion and the end portions (in the vicinity of the electrode portions 1a) of the lamp is compensated. When the reflection sheet made of a resilient material is used, the reflection sheet can be fixed utilizing the resiliency by putting the reflection sheet along the inner curved surface of the lamp holder. Instead of the reflection sheet, metal (silver or aluminum) may be evaporated on the inner surface of the lamp holder.
摘要:
An operation unit includes a case and an operation member molded integrally through injection molding. The operation member includes an outer surface and a slide portion supported by the case. The slide portion is slidable and movable relative to the case. The operation member further includes a knob operated by an operator, a parting line formed continuously from the slide portion to the knob along the outer surface, and a ridge line formed on the outer surface. At least part of the parting line is formed along the ridge line.
摘要:
A current difference divider circuit with a plurality of current sources is provided. The divider circuit includes a first current source which is operable to generate a first current, a second current source for generation of a second current less in magnitude than the first current, and a third current source for generating a difference current with its magnitude equivalent to a difference between the first and second currents and for generating a third current resulting from the division thereof. The circuit further includes a fourth current source for generating a fourth current obtainable by mirroring of the second current. The third and fourth currents are added together to provide a fifth current, which is then output.
摘要:
A constant voltage generating circuit comprising following elements is shown: a first constant current generation circuit including a first transistor and a second transistor, configured to generate a first voltage and a first current as determined by an operating point to be determined depending on a difference in threshold voltage between the first and second transistors; a second constant current generation circuit configured to generate a second current proportional to said first current; and a voltage generation circuit including a third transistor having its gate and drain connected together, configured to generate a second voltage when letting said second current flow in said third transistor.
摘要:
A nonvolatile semiconductor memory includes first and second nonvolatile memory banks, a data-line for read, a data-line for program and verify, a sense amplifier for read, a sense amplifier for program and verify, and a program circuit. The data-lines are arranged in a region between the first and second nonvolatile memory banks, and selectively connected to the bit-lines of the first and second nonvolatile memory banks. The sense amplifier for read is connected to the data-line for read. The sense amplifier for program and verify and the program circuit are connected to the data-line for program and verify.
摘要:
A semiconductor memory device is provided using a sense amp circuitry capable of lowering a supply voltage. The semiconductor memory device includes an array of memory cells each configured to store data in accordance with the presence/absence or the magnitude of a current; a sense amp configured to compare a voltage caused on a sense line based on data in a memory cell selected from the array of memory cells with a reference voltage applied to a reference sense line to determine the data; and a reference voltage generator configured to generate the reference voltage applied to the reference sense line.
摘要:
A semiconductor memory device comprises memory cell array, a sense amp, and a reference voltage generator. The reference voltage generator includes a reference cell unit containing a reference cell to flow a reference current and a first current source load to supply a current to the reference cell; a reference transistor unit containing a reference transistor to flow a current reflecting the reference current and a second current source load to supply a current to the reference transistor; a control amp for negative feedback control of the reference transistor; a current source transistor; and a third current source load connected to a reference sense line.