STMicroelectronics

About: STMicroelectronics is a company organization based out in Geneva, Switzerland. It is known for research contribution in the topics: Transistor & Signal. The organization has 17172 authors who have published 29543 publications receiving 300766 citations. The organization is also known as: SGS-Thomson & STM.

A cache system for concurrent processes

Abstract: A method of operating a cache memory is described in a system in which a processor is capable of executing a plurality of processes, each process including a sequence of instructions. In the method a cache memory is divided into cache partitions, each cache partition having a plurality of addressable storage locations for holding items in the cache memory. A partition indicator is allocated to each process identifying which, if any, of said cache partitions is to be used for holding items for use in the execution of that process. When the processor requests an item from main memory during execution of said current process and that item is not held in the cache memory, the item is fetched from main memory and loaded into one of the plurality of addressable storage locations in the identified cache partition.

Double buffer base gate array cell

Abstract: A base cell for a CMOS gate array is disclosed, which utilizes cutoff transistor isolation. The disclosed cell implements the cutoff transistor isolation by way of separate outer electrodes for the p-channel and n-channel sides, so that p-type and n-type diffused regions are disposed at the edges of the cell to be shared with adjacent cells. The disclosed cell further includes a pair of inner electrodes which extend over both the n-type and p-type active regions. This construction enables the use of cutoff isolation techniques, but also provides the ability to implement transmission gate style latches via the common complementary gate inner electrodes. Greater efficiency of silicon area, improved utilization, and reduced input loading and active power dissipation result from an integrated circuit incorporate the disclosed cells.

Embedded software in real-time signal processing systems: application and architecture trends

Abstract: We present an extensive survey of trends in embedded processor use with an emphasis on emerging applications in wireless communication, multimedia, and general telecommunications. We demonstrate the importance of application-specific instruction-set processors (ASIPs) in high-volume, low cost applications. We also examine some of the underlying trends of the applications in which embedded processors are used. This is followed by a description of embedded software development tool requirements. High-performance software compilation emerges as a key requirement. Finally, specific industrial case studies of products in MPEG, videophone, and low-cost digital signal processor (DSP) applications are used to illustrate the architecture design tradeoffs, and highlight specific tool requirements. A companion paper (Goosens et al., 1997) presents a comprehensive survey of embedded software development tools, focusing mostly on retargetable software compilation.

Performance and design considerations for gate-all-around stacked-NanoWires FETs

Abstract: This paper presents recent progress on Gate-All-Around (GAA) stacked-NanoWire (NW) / NanoSheet (NS) MOSFETs Key technological challenges will be discussed and recent research results presented Width-dependent carrier mobility in Si NW/NS and FinFET will be analyzed, and intrinsic performance and design considerations of GAA structures will be discussed and compared to FinFET devices with a focus on electrostatics, parasitic capacitances and different layout options The results show that more flexibility can be achieved with stacked-NS transistors in order to manage power-performance optimization

Two-phase interleaved LLC resonant converter with current-controlled inductor

Abstract: Multi-phase interleaved converters represent interesting solutions in terms of reduced current rating of each module, reduction of input and output current ripples, and possibility of redundancy. However, when attempt to interleave resonant converters operating at the same switching frequency, the resonant components' tolerance can cause severe current unbalance between them. In this paper, a two-phase interleaved LLC resonant converter is proposed that employs a current-controlled inductor to adjust the resonance frequency of one module, thus compensating for component mismatch. Experimental results of a prototype rated at 24V-12A output are presented, confirming the theoretical forecasts.