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A write buffer design based on stable and area-saving embedded SRAM for flash applications

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Abstract

This paper presents an embedded SRAM design for write buffer applications in flash memories. The write buffer is implemented with a newly proposed self-adaptive timing control circuit, an area-saving sense-latch circuit and 6 T SRAM cell units. A 2 kb SRAM macro with the area of 135 μm × 180 μm is implemented in and applied to a 128 Mb NOR flash memory with the SMIC 65 nm NOR flash memory process. Both simulation and chip test results show that the SRAM write buffer is beneficial to high-density flash memory design.

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Correspondence to ZongLiang Huo or Ming Liu.

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Cao, H., Huo, Z., Wang, Y. et al. A write buffer design based on stable and area-saving embedded SRAM for flash applications. Sci. China Technol. Sci. 58, 357–361 (2015). https://doi.org/10.1007/s11431-014-5725-8

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  • DOI: https://doi.org/10.1007/s11431-014-5725-8

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