Patent Number: 7,710,762

Title: Device for protecting SRAM data

Abstract: A device for protecting data stored in a static random access memory (SRAM) is provided. More particularly, a device for protecting SRAM data including an SRAM data erasing circuit, which erases memory stored in an SRAM at once when illegal separation from a system is detected. The device for protecting SRAM data includes: a power switching circuit for outputting electrical power supplied from an external power supply or a back-up battery power supply depending on whether the external power supply is supplying the electrical power or not; and an SRAM data erasing circuit for supplying the electrical power output from the power switching circuit to a power input terminal of a SRAM or grounding the power input terminal of the SRAM, in response to a connecter connection signal. The device can prevent illegal leakage of SRAM data by erasing the data stored in the SRAM when the SRAM is illegally separated from a system according to the switch setting of the SRAM data erasing circuit.

Inventors: Lee; Bong Soo (Daejeon, KR), Son; Jong Mok (Daejeon, KR), Chae; Jong Ho (Daejeon, KR), Yi; Sang Yi (Daejeon, KR)

Assignee: Electronics and Telecommunications Research Institute

International Classification: G11C 11/00 (20060101)

Expiration Date: 5/04/12018