摘要:
A flip-flop type sense amplifier for a semiconductor memory device is disclosed, the sense amplifier comprising a pair of CMOS inverters cross-coupled with each other to form a CMOS flip-flop circuit having a pair of buffer circuits, for receiving the read-out voltage signals from multi-level memory cells and a predetermined reference voltage, respectively, and a pair of switching circuits for inverting a power source voltage across the flip-flop circuit through common sources of the flip-flop circuit, in response to the transition between a stand-by sequence and a latching operating. The common source of the p-channel transistors of the CMOS flip-flop circuit is connected to a negative potential source, and the common source of the n-channel transistors is connected to a positive potential source during a stand-by sequence, and vice versa, during a latching operation. This unique potential supply method enhances operational speed of the sense amplifier. In a multi-level memory device, a plurality of the sense amplifiers are connected in parallel for the discrimination of the read-out signals changing in a range of a few volts.
摘要:
A ROM device includes a plurality of memory cells each storing one of three states, a cell voltage generating circuit for providing a cell voltage corresponding to the state stored in a selected one of the memory cells, and a reference cell for providing a reference voltage which is substantially the same as the cell voltage provided by a memory cell storing an intermediate state of the three states. The ROM also includes a comparator circuit for generating a logical output signal based on the result of a comparison between the cell voltage and the reference voltage.
摘要:
A plural-bit-per-cell read-only memory constituted by a memory cell array (1), reference cell array (2A, 2B, 2C), and related circuits. In the memory cell array (1), a low resistance ground line (17) crossing the diffusion layer in parallel with the bit lines (15) is arranged for each predetermined length of the diffusion layer, which is used as a common grounding route to the low resistance ground line (17). The reference cell array (2A) includes a plurality of reference cells (211, 212, . . . 21n), and the arrangement of the reference cells (211, 212, . . . 21n) corresponds to the arrangement of the plural-bit memory cells (14) within the predetermined length of the diffusion layer in the memory cells array (1). The transconductance of the reference cells is predetermined in correspondence with the reference voltage values (REF1, REF2, REF3). A column address signal which selects a plural-bit memory cell (14) also selects one of the reference cells (211, 212, . . . 21n) which corresponds to the plural-bit memory cell (14) selected by the column address signal. Thus, in generation of reference voltages (REF1, REF2, REF3), the reference voltage value is corrected taking into consideration the influence of resistance of the diffusion layer according to the location of the plural-bit memory cell (14) selected by the column address signal.
摘要:
A buffer circuit for driving a C-MOS inverter, including a first inverter and a second inverter for driving a p-MOS transistor, respectively, and an n-MOS transistor in the C-MOS inverter. Each of the inverters includes at least three transistors connected in series. At least one of the three transistors in each inverter is driven by a delay circuit so that during a transition period of the C-MOS inverter, simultaneous conduction of current through the C-MOS inverter is prevented.
摘要:
A read-only memory device comprises a plurality of groups of bit lines (BL.sub.0, BL.sub.1, . . . , BL.sub.63). One bit line within each group is selected by first column address decoders (4-1) and one group is selected by second column address decoders (8-0.about.8-3). One load element (Q.sub.L0, Q.sub.L1, Q.sub.L2, Q.sub.L3) is provided in each second column address decoder to pull up the potentials of the bit lines.
摘要:
A read only memory device including: a memory cell array having a plurality of memory cells each storing one of three states; selection means, connected to the memory cell array, for selecting a pair of the memory cells from the memory cell array simultaneously in accordance with an address signal; a first sense amplifier, operatively connected to one of the pair of the memory cells, for producing a three bit output corresponding to the state stored in the one of the pair of the memory cells selected by the selection means; and a second sense amplifier, operatively connected another of the pair of memory cells, for producing a three bit output corresponding to the state stored in the another of the pair of the memory cells selected by the selection means.The device further includes decoder means, connected to the first and second sense amplifiers, for receiving the three bit outputs of the first and second amplifiers and producing a binary three bit output corresponding to the states stored in the pair of memory cells.
摘要:
A powder material for three-dimensional modeling includes a base particle and a resin covering the base particle, wherein the resin has a first absorption peak in the range of from 1,141 cm−1 to 1,145 cm−1 and a second absorption peak in the range of from 1,089 cm−1 to 1,093 cm−1 in an infrared absorption spectrum and the intensity ratio of the first absorption peak to the second absorption peak is from 0.40 to 0.70.
摘要:
A vehicle 10 according to an embodiment of the present invention is applied to a charge-discharge system CDS. The charge-discharge system includes the vehicle 10, an electric power cable 20, a plug-in station 30, a HEMS 40, and a commercial power supply 50. In a state where the connector 21 of the electric power cable 20 is connected with the inlet of the vehicle 10, an electric power is discharged/supplied from the vehicle electric storage device 11 to an external electric load (e.g., external electric storage device 41). Further, the vehicle electric storage device 11 is capable of being charged by the external power supply 50 through the electric power cable 20. A control device 12 of the vehicle 10 obtains/detects a permissible current value of the electric power cable 20, based on a specific signal (control pilot signal) which is transmitted through a CPLT terminal of the connector 21 before it starts the discharge to the external electric load from the vehicle electric storage device 11.
摘要:
A powder material for three-dimensional modeling includes a base material and a resin covering the base material, wherein the covering factor by the resin is 15 percent or more and the aspect ratio of the powder material is 0.90 or greater as calculated according to the following relation 1. Aspect ratio (average)=X1×Y1/100+X2×Y2/100+ . . . +Xn×Yn/100, Relation 1 In the Relation 1, Y1+Y2+ . . . +Yn=100 (percent), Xn represents the aspect ratio (minor axis/major axis), Yn represents an existence ratio (percent) of a particle having an aspect ratio of Xn, and n is 15,000 or greater.
摘要翻译:在关系1中,Y1 + Y2 +。 。 。 + Yn = 100(%),Xn表示长宽比(短轴/长轴),Yn表示纵横比为Xn,n为15000以上的粒子的存在比(百分比)。
摘要:
A vehicle 10 according to the embodiment of the present invention is applied to a charge-discharge system CDS. The charge-discharge system includes the vehicle 10, an electric power cable 20, a plug-in station 30, a HEMS 40, and a commercial power supply 50. From the HEMS 40 to the vehicle 10, a request for charge to charge an electric storage device 11 and a request for discharge to allow an external electric load to use an electric power of the electric storage device 11 are transmitted. When a request is changed from the request for charge to the request for discharge, or vice versa, the vehicle 10 realizes a charge-discharge stop state in which neither a charging operation nor a discharging operation is performed without directly changing from the charging operation to the discharging operation, or vice versa.