6T SRAM 6T Non-volatile SRAM based on flash memory and method of operating the same

摘要

The present invention relates to a 6T non-volatile SRAM based on a flash memory that improves the volatile characteristics of 6T SRAM (Static random access memory) and maintains the information without disappearing even after power is turned off while having a fast operation speed and an operating method thereof. it's about The flash memory-based 6T nonvolatile SRAM according to the present invention includes a first inverter, a second inverter, a first pass gate and a second pass gate. The first inverter is formed of a first pull down transistor coupled to a first pull up transistor. Also, the second inverter is formed of a second pull down transistor connected to a second pull up transistor. In addition, the first pass gate includes a non-volatile memory device connected between an output of the first inverter and a bit line bar node. In addition, the second pass gate is formed of a non-volatile memory device connected between the output of the second inverter and a bit line node.