首页|基于Sense-Switch型pFLASH的FPGA可编程逻辑单元的设计与验证

基于Sense-Switch型pFLASH的FPGA可编程逻辑单元的设计与验证

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本文提出一种基于Sense-Switch型pFLASH技术的可编程逻辑单元(PLE).通过对Sense-Switch型pFLASH进行编程,实现所有的三位查找表(LUT3)功能、部分LUT4功能、锁存器功能以及带使能和复位的DFF功能.因为PLE使用了一种选择运算逻辑(COOL)的方法来运算逻辑函数,它允许使用任意组合逻辑和寄存器的比例来实现任意逻辑电路.这一本质特性使其在精细粒度方面接近于基本的ASIC单元,从而允许类似ASIC的基于单元的映射器应用其所有的优化潜力.对Sense-Switch型pFLASH和PLE电路的实测结果表明Sense-Switch 型 pFLASH的"开态"驱动电流约为245.52 μA、"关态"漏电流约为0.1 pA;PLE的可编程功能正常工作;典型的组合逻辑运算AND3的延迟为0.69 ns、时序逻辑DFF的延迟为0.65 ns,均满足设计技术指标的要求.
Design and verification of an FPGA programmable logic element based on Sense-Switch pFLASH
This paper proposes a kind of programmable logic element(PLE)based on Sense-Switch pFLASH technology.By programming Sense-Switch pFLASH,all three-bit look-up table(LUT3)functions,partial four-bit look-up table(LUT4)functions,latch functions,and d flip flop(DFF)with enable and reset functions can be realized.Because PLE uses a choice of operational logic(COOL)approach for the operation of logic functions,it allows any logic circuit to be implemented at any ratio of combinatorial logic to register.This intrinsic property makes it close to the basic application specific integrated circuit(ASIC)cell in terms of fine granularity,thus allowing ASIC-like cell-based mappers to apply all their optimization potential.By measuring Sense-Switch pFLASH and PLE circuits,the results show that the"on"state driving current of the Sense-Switch pFLASH is about 245.52 μA,and that the"off'state leakage current is about 0.1 pA.The programmable function of PLE works normally.The delay of the typical combinatorial logic operation AND3 is 0.69 ns,and the delay of the sequential logic operation DFF is 0.65 ns,both of which meet the requirements of the design technical index.

Field programmable gate array(FPGA)Programmable logic element(PLE)Boolean logic operationLook-up tableSense-Switch pFLASHThreshold voltage

曹正州、刘国柱、张艳飞、单悦尔、徐玉婷

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中国电子科技集团公司第58研究所,中国无锡市,214035

现场可编程门阵列 可编程逻辑单元 布尔逻辑运算 查找表 Sense-Switch 型 pFLASH 阈值电压

国家自然科学基金江苏省自然科学基金江苏省自然科学基金

62174150BK20211040BK20211041

2024

10.1631/FITEE.2300454

信息与电子工程前沿(英文)
浙江大学

信息与电子工程前沿(英文)

CSTPCD
影响因子：0.371
ISSN：2095-9184
年,卷(期)：2024.25(4)
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