中国半导体行业协会封装分会会刊

中国电子学会电子制造与封装技术分会会刊

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电子与封装 ›› 2023, Vol. 23 ›› Issue (10): 100301 . doi: 10.16257/j.cnki.1681-1070.2023.0127

• 电路与系统 • 上一篇    下一篇

可变容量的高可靠Flash型FPGA配置存储器设计

曹正州1,查锡文2   

  1. 1. 无锡中微亿芯有限公司,江苏 无锡 214072;2. 无锡华普微电子有限公司,江苏 无锡 214072
  • 收稿日期:2023-05-15 出版日期:2023-10-31 发布日期:2023-10-31
  • 作者简介:曹正州(1982—),男,江苏盐城人,本科,高级工程师,研究方向为SRAM型FPGA、Flash型FPGA和FPGA配置芯片的设计。

Design of High Reliable Flash FPGA Configuration Memory with Variable Capacity

CAO Zhengzhou1, ZHA Xiwen2   

  1. 1. EastTechnologies, Inc., Wuxi 214072, China; 2. Wuxi HopeMicroelectronics Co., Ltd., Wuxi 214072, China
  • Received:2023-05-15 Online:2023-10-31 Published:2023-10-31

摘要: 采用0.18μm 2P6M Flash工艺设计了一款FPGA配置存储器,为SRAM型FPGA提供了串行和并行的码流加载方式,最高工作频率为50MHz,具有存储容量可变、可靠性高的优点。通过设计地址侦测电路实现了该FPGA配置芯片的存储容量可变,从而提高了该配置芯片的适用范围;通过设计双模的复位电路,使芯片更适应复杂的电源环境,提高了上电复位的可靠性;通过设计存储器内建自测试(MBIST)电路,实现了对Flash全地址存储空间的自测试和对电路的高效筛选,减少了芯片的测试时间,同时提高了配置芯片存储空间的可靠性。

关键词: 配置存储器, FPGA, 可变容量, Flash, 存储器内建自测试

Abstract: An FPGA configuration memory is designed with 0.18 μm 2P6M Flash process. It provides serial and parallel stream loading modes for SRAM FPGAs. The maximum working frequency is 50 MHz, and it has the advantages of variable storage capacity and high reliability. The memory capacity variability of the FPGA configuration chip is realized by designing an address detection circuit, and the application range of the FPGA configuration chip is improved. By designing a two-mode reset circuit,the chip is more suitable for complex power supply environment, and the reliability of power-on reset is improved.Memory build in self-test (MBIST) circuit is designed to realize the self-test of Flash full address storage space and efficient screening of the circuit, the test time of the chip is reduced, and the reliability of the configuration chip storage space is improved.

Key words: configuration memory, FPGA, variable capacity, Flash, memory build in self-test

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