摘要:
A device design for an FET in SOI CMOS which is designed for enhanced avalanche multiplication of current through the device when the FET is on, and to remove the body charge when the FET is off. The FET has an electrically floating body and is substantially electrically isolated from the substrate. The present invention provides a high resistance path coupling the floating body of the FET to the source of the FET, such that the resistor enables the device to act as a floating body for active switching purposes and as a grounded body in a standby mode to reduce leakage current. The high resistance path has a resistance of at least 1 M-ohm, and comprises a polysilicon resistor which is fabricated by using a split polysilicon process in which a buried contact mask opens a hole in a first polysilicon layer to allow a second polysilicon layer to contact the substrate.
摘要:
An apparatus and method controlling power consumption in portable personal computers by dynamically allocating power to the system logic. Expected total power consumption is calculated and compared to an optimum power efficiency value. The expected power consumption values for each execution unit are stored in a look-up table in actual or compressed form. If the expected total power consumption value exceeds the power efficiency value, selected execution units are made inactive. Conversely, if the power efficiency value exceeds the expected total power consumption value, execution unit functions are added in order to maintain a level current demand on the battery.
摘要:
An integrated circuit and fabrication method for an antifuse structure that includes a shallow trench oxide isolation region disposed in a silicon substrate, the oxide in the trench having a top surface recessed below the surface of the substrate to form sharp corners at each side of the trench. The substrate includes diffusion regions adjacent to the sharp corners, electrical insulation layers over the diffusion regions, and an electrical conductor is disposed over the recessed oxide in the trench. When voltage is applied on the electrical conductor, a high field point is produced at the sharp corners causing the electrical insulation layer at the corners to break down and create a short circuit between the electrical conductor and the diffusions, thus providing a fuse function.
摘要:
A BICMOS binary logic circuit or system is provided which includes P-channel and N-channel transistors, a bipolar transistor having a base connected to the drain of the P-channel transistor, a diode, preferably a Schottky barrier diode, connected between the emitter of the bipolar transistors and the drain of the N-channel transistor, a capacitor load connected to the emitter of the bipolar transistor and an input terminal connected to control electrodes of the P-channel and N-channel transistors.
摘要:
An improved voltage sensing circuit is provided which includes a pair of cross-coupled bipolar transistors coupled to a pair of signal nodes, a pair of cross-coupled field effect transistors coupled to the same pair of signal nodes and means for activating the bipolar transistors during a first period of time and then activating the field effect transistors. The bipolar transistors are preferably NPN transistors and the field effect transistors are preferably P channel transistors. The circuit may be conveniently fabricated in complementary metal oxide semiconductor (CMOS) technology.
摘要:
This invention provides an amplifier circuit having first and second transistors interconnected by a third transistor which is symmetrically constructed. A current source is selectively connected to the base of the third transistor. When the current source is connected to the base of the third transistor, the third transistor is saturated, forming a very low impedance path between the first and second transistors. However, when the current source is disconnected from the base of the third transistor, the third transistor impedes the voltage breakdown path between the bases of the first and second transistors. The amplifier circuit is particularly useful in an improved compact magnetic media system wherein both the stored signal and the write signal or voltage are applied to the bases of the first and second transistor of the amplifier without the high write voltages destroying the high performance first and second transistors.
摘要:
A system is provided in which two load devices connected to a latch are individually controlled and connected to a common input/output line. A bit/sense line is connected to each of two nodes on the latch. By providing two such latches each with bit/sense lines and two individually controlled load devices connected to the common input/output line, two cells of a word line may be sensed simultaneously.
摘要:
A calibrated sensing system is provided in accordance with the teachings of this invention for sensing charge in a storage medium, such as a storage capacitor, coupled to an access or bit/sense line which compensates for most sources of variability in the storage medium and in the access line. In the system, the unknown charge stored in the storage medium is transferred to a first capacitor or potential well via the access line. A high charge state of the storage medium is written into the storage medium and known fractional packets of charge are prepared therefrom, transferred selectively to a second capacitor or potential well and compared with the unknown charge in the first potential to determine the relative level of the unknown charge that was stored in the storage medium. By selectively using two or more fractional packets of charge multilevel sensing is performed.
摘要:
A sense amplifying system is provided having first and second bit lines and first and second differential amplifiers arranged in tandem with a first isolation device connecting one side of the first amplifier to the first bit line and a second isolation device connecting the other side of the first amplifier to the second bit line and with a third isolation device connecting one side of the second amplifier to the first bit line and a fourth isolation device connecting the other side of the second amplifier to the second bit line. A precharging circuit charges the first and second lines to the same potential. The first amplifier is used to sense signals on the first line while using a reference voltage derived from the second line and the second amplifier is used to sense signals on the second line while using a reference voltage derived from the first word line.
摘要:
The present invention provides a performance based system and method for dynamic allocation of a unified multiport cache. A multiport cache system is disclosed that allows multiple single-cycle look ups through a multiport tag and multiple single-cycle cache accesses from a multiport cache. Therefore, multiple processes, which could be processors, tasks, or threads can access the cache during any cycle. Moreover, the ways of the cache can be allocated to the different processes and then dynamically reallocated based on performance. Most preferably, a relational cache miss percentage is used to reallocate the ways, but other metrics may also be used.