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This paper proposes an 8T SRAMs utilizing a column-based data encoding scheme to reduce read and write power when there are similarities between consecutive data. It is useful in image processing applications where nearby pixels tend to have similar values. The proposed design has two modes of operation: normal and sequential modes. In the normal mode, it operates as a normal SRAM. In the sequential...
8T SRAMs operating at sub-threshold supply voltages suffer from bit-line swing degradation when the data pattern of a column is dominated by ‘1’ or ‘0’. Worst case scenarios happen when the accessed bit is different from the rest of the column. In this work, a simplified Linear Feedback Shift Register (LFSR) is used to shuffle input data so that distribution of “1” and “0” in each column is close...
This paper presents a 7T near-threshold SRAM with design techniques for improving cell stability and energy efficiency. The proposed write through virtual ground (WTVG) scheme decreases the period of write disturbance by 6.1×. A PVT tracking sensing scheme is presented to track variation and sense small RBL swing. The ultra-fine grain power gating switches are implemented to minimize the redundant...
High energy efficient ultra-low voltage SRAMs play a key role in many emerging ultra-low power applications. However, design of SRAMs for reliable ultra-low voltage operation is challenging due to various problems. In this paper, we explore various ultra-low voltage SRAM design techniques for improving energy efficiency. Effect of MTCMOS on energy efficiency improvement, circuit techniques for ultra-low...
Radical change is needed in today's organizations. While e-mail, instant messaging, wikis, prediction markets, and the like have proliferated across myriad sectors, the fundamental practice of management has failed to keep pace. Sensors can automatically measure social behavior occurring in physical space as well as the virtual world. Moreover sensor-based feedback is poised to help create the change...
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