摘要:
There is provided a method of entry of an operation mode of a semiconductor memory during operations without need of any specific timing specification and with effective suppression to any erroneous entry. If read cycles for plural addresses are continued, then, a request for entry of operation mode is accepted. In write cycles following to those read cycles, an operation mode to be entered is decided based on data externally designated, wherein in the first write cycle, the kind of the operation mode is set, and then in the next write cycle, conditions for the operation mode are set for the entry of the operation mode of the semiconductor memory.
摘要:
A device testing apparatus including a connection terminal to which an electronic device under test is detachably attached, a pusher for pushing the electronic device in the direction of the connection terminal so as to connect the electronic device to the connection terminal, and a cooling unit for cooling the electronic device. As the cooling unit, an element cooling the device using electricity is for example used. The cooling unit includes a cooling medium blower for blowing a cooling medium around the electronic device and heat exchange projections or depressions for raising the cooling efficiency by blowing a cooling medium. In the device testing apparatus, even if the electronic device generates heat on its own during testing, the electronic device is cooled through the pusher, connection terminals, or socket, so the effect of the heat generated by the electronic device is canceled out and the electronic device can be tested at the predetermined temperature as prescribed in the specification.
摘要:
A display device of the present invention has a drain driver mounted to a display substrate and having a gate driver and a controller therein, and also has a power source mounted to a flexible printed board and supplying a power voltage to the gate driver. The wiring of a common control signal outputted from the controller and commonly used in control of the gate driver and the power source is formed on the display substrate so that the number of pads for connecting the display substrate and the flexible printed board is reduced. Thus, the construction of the flexible printed board is simplified, and the entire display device can be made compact.
摘要:
In accordance with the present invention, in order to reduce an averaged consumption current in a stand-by state, there is provided a semiconductor memory device including a memory cell array area which is divided into a plurality of areas, wherein the semiconductor memory device includes: at least one specific area setting unit being electrically coupled to said memory cell array area and adopted to set at least one area defined in said plurality of areas in accordance with an optional criterion; and at least one refresh operation control unit being electrically coupled to said memory cell array area and adopted to perform a refresh operation to the specific area based on at least one kind of specific refresh control signal, which is longer in cycle than a basic refresh control signal at least in a predetermined state of the semiconductor memory device.
摘要:
A semiconductor memory device has common terminals shared between a part or all of address terminals for receiving n bits of an address signal and data terminals for outputting a data signal with its bit width of n bits or less and dedicated address terminals for receiving m bits of the address signal, wherein at the time of a read, after the n bits of the address signal have been input, a plurality of data signals within a selected page are consecutively read out through the common terminals using the m bits of the address signal input from the dedicated address terminals.
摘要:
An operation control circuit is provided for shortening a transition time from a deep stand-by mode to a stand-by mode in a pseudo-SRAM having the deep stand-by mode and the stand-by mode. The transition from the deep stand-by mode to the stand-by mode starts first and second timer circuits which respectively output a timer output TN of a constant cycle needed for self-refresh and a timing signal TR of a shorter cycle than a self-refresh cycle. A counter circuit counts the output TR from the second timer circuit immediately after the deep stand-by mode has been transitioned to the stand-by mode. If the counted value corresponds to a value as set, then the counter circuit outputs an operation mode switching signal. A selector circuit comprising a multiplexer is switched and controlled by the output from the counter circuit. The selector circuit remains selecting TR until the counted value of the counter circuit corresponds to the set value, and in the subsequent stand-by mode, the selector circuit selects and outputs TN.
摘要:
According to the present invention, data for all or a part of the MFP devices connected to a network are obtained, and are rearranged as a list or are limited based on a variety of data obtained for each device, such as equipment data, apparatus data, network setup data, job states and employment statuses. As a result, data desired by a user can be provided in real time.
摘要:
Refresh of memory cells is performed periodically by a refresh timer, and collision between memory access and memory refresh is avoided. When memory access occurs, an F/F 163 is set by a one shot pulse from an OS circuit 161, a memory access request is inputted to a memory accessing pulse generator circuit 171 through a NOR gate 167, and a latch control signal LC and an enable signal REN are outputted. When a refresh request from the refresh timer is inputted to an AND gate 168 during the memory access, the output of the NOR gate 167 is at the “L” level, and the refresh request is blocked by the AND gate 168. Thereafter, at the time when the latch control signal LC is turned into the “L” level, F/Fs 163, 164 and 165 are reset, the output of the NOR gate 167 is turned into the “H” level, the refresh request is inputted to a refreshing pulse generator circuit 170, and a refresh enable signal RERF is outputted.
摘要翻译:通过刷新定时器周期性地执行存储器单元的刷新,并避免存储器访问和存储器刷新之间的冲突。 当存储器访问发生时,通过来自OS电路161的单触发脉冲设置F / F 163,通过NOR门167将存储器访问请求输入到存储器访问脉冲发生器电路171,以及锁存控制信号LC和 输出使能信号REN。 当在存储器访问期间来自刷新定时器的刷新请求被输入到与门168时,或非门167的输出处于“L”电平,刷新请求由与门168阻止。此后, 当锁存控制信号LC变为“L”电平时,F / F 163,164和165被复位,或非门167的输出变成“H”电平,刷新请求被输入到 输出刷新脉冲发生器电路170和刷新使能信号RERF。
摘要:
The present invention intends to provide a variable reluctance-type resolver which does not deteriorate detecting accuracy, and which can fix the rotor to the rotate shaft cheaply. For such purpose, the resolver 1 is comprised of a stator 5 on which coils 6 are wound, a rotor provided with protrude poles 4a, an annular stopper 10 made of magnetic material. An outer diameter DS of the stopper 10 is selected to be smaller than a valley diameter DR of the rotor 4. Leakage of the magnetic flux from the stator to the stopper is prevented, and stopper made of the magnetic material can fix the rotor in cheaper way.
摘要:
The present invention is to provide a drive device which can prolong the lifetime of light emitting elements constituting a display panel in an environment of a high temperature. A thermistor TH1 is provided in a voltage boosting circuit 4 which drive and light the light emitting elements E11 to Enm in a light emitting display panel 1, and by this thermistor first light emission control means is constituted which drive and light the light emitting elements at an approximately constant light emission intensity value regardless of the level of the environmental temperature. Meanwhile, a current mirror circuit is arranged in an anode line drive circuit 2 which supplies a constant current to the respective light emitting elements E11 to Enm, and second light emission control means in which a current value is controlled by a control voltage Va from a temperature detection means 11A provided with a thermistor TH2 is constructed. The second light emission control means drives and lights the light emitting elements so that the intensity value becomes smaller than the constant light emission intensity value controlled by the first light emission control means in the case where a state in which the environmental temperature exceeds a predetermined value (for example, 50° C.) is detected.