Radiation hardened sram unit

Abstract

The invention provides an improved anti-radiation SRAM (Static Random Access Memory) unit. The unit comprises the following structures: phase inverter structures and a transmission structure, wherein the phase inverter structures comprise a first phase inverter structure, a second phase inverter structure, a third phase inverter structure and a fourth phase inverter structure; the phase inverter structures are formed by connecting PMOS (P-channel Metal Oxide Semiconductor) pipes and NMOS (N-channel Metal Oxide Semiconductor) pipes in series; storage nodes are arranged between drain electrodes of the PMOS pipes and drain electrodes of the NMOS pipes; each storage node can control gate voltages of one NMOS pipe of one phase inverter structure and one PMOS pipe of another phase inverter structure; the transmission structure comprises two NMOS pipes; the source electrodes, the grid electrodes and the drain electrodes of the two NMOS popes are respectively connected with a bit line j and an inverse phase line, word lines and storage nodes. The improved anti-radiation SRAM unit provided by the invention has the advantages that each node controls other two nodes through one PMOS and one NMOS and is controlled by one PMOS and one NMOS at the same time, so that the closed loop feedback control between the nodes is realized and the anti-high level turnover capacity is effectively increased.

Description

technical field [0001] The invention relates to the technical field of semiconductors, in particular to an improved anti-radiation SRAM storage unit. Background technique [0002] Integrated circuits are the fastest-renewing electronic products in the world, and memory is always a typical product representing the development level of integrated circuit technology. The improvement of integrated circuit design and manufacturing process level has continuously improved the capacity and performance of SRAM. SRAM is the largest amount of volatile memory used as a computer cache because of its read and write speed. In addition, SRAM is also widely used in aviation, communication, and consumer electronics products. [0003] With the rapid development of aerospace industry and semiconductor technology, all kinds of electronic equipment have been applied to the space with very harsh environment. The space is full of various radiation particles, and the radiation effect will cause th...

AI Technical Summary

Problems solved by technology

Although B=1 can pull down the potential of A to a certain extent, A=1 can also affect B

Images