EEPROM circuit configuration having security function

Details EEPROM circuit configuration having security function EEPROM circuit configuration having security function

1995-10-30

1997-06-17

Nelms, David C.

Static information storage and retrieval

Floating gate

Data security

36518526, 36518529, 36518533, G11C 1134

Patent

active

056403470

ABSTRACT:
The present invention provides a security configuration of EEPROM, which is adaptable to a semiconductor integrated circuit. Each byte or minimum cell of the EEPROM is assigned a security bit which corresponds to the same memory cell of EEPROM in a data memory array. Since the security bit can be established inside the memory array, necessary chip area is not increased significantly.

REFERENCES:
patent: 4962484 (1990-10-01), Takeshima et al.

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