A SEE Hardened Read-Out Circuit of EEPROM for Space Application
As wide application of EEPROM devices in space and military field, more and more researches focus on its radiation hardened characteristics in international. To improve the single-event effect (SEE) tolerant ability of read-out circuits in the memory, a radiation hardened circuit is designed. The design kernels of radiation hardened latch-flip are given and designed to resist the single-event upset (SEU) effect. A correction circuit is proposed to resist the single-event transient (SET) effect. The performances of this design are: SEU (LET)th ≥ 27 MeV•cm2/mg, SEL(LET)th ≥ 75 MeV•cm2/mg , read out time ≤200 ns. The new design not only satisfied the needs of present work, but supplies a worthful reference for radiation hardened circuit design in future.