抗輻射SRAM單元及存儲器設(shè)計
[Abstract]:With the development of integrated circuit and space industry, on-chip system (So C) chip is more and more used in radiation environment. Memory is an important part of So C. radiation hardening of memory is a key research direction of memory today. In this paper, a hardened SRAM memory used in radiation resistant So C is designed by using SMIC 0.18 渭 m process. In this paper, the single-particle flip-over effect, the single-particle latch-up effect and the total dose effect, as well as the commonly used reinforcement methods are analyzed, and the strengthening methods used in this design are determined according to these three radiation effects. Then according to the design requirements, the architecture design and timing design of 8Kb memory are carried out. A memory array based on 12-transistor DICE circuit structure is designed for the circuit-level reinforcement of single-particle flip-over memory cells. Then the peripheral circuit of memory is designed and simulated, including column decoding circuit, data input / output circuit, sensitive amplifier and clock circuit. The structure, function and performance of the lock-in sensitive amplifier are analyzed. The complete memory design and simulation are completed. The working frequency of SRAM memory in this design can reach 100 MHz. The access time is about 0.926 nsand the power consumption is 3.88m W. Finally, the layout design is carried out. The single-particle latch-up effect and total dose effect are strengthened by using power contact and substrate contact in the layout. The size of the memory layout is 603900.3432um2. The parasitic parameters of the layout are extracted and the post-simulation results show that the memory function is correct. The access time is 1.21 ns and the power consumption is 5.136 MW, which is not much different from the previous simulation results.
【學(xué)位授予單位】:哈爾濱工業(yè)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TP333
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