Non-volatile storage device

Details Non-volatile storage device Non-volatile storage device

1996-11-25

1998-07-21

Nelms, David C.

Static information storage and retrieval

Floating gate

Particular biasing

36518526, 36518529, 36518533, 365218, G11C 1134

Patent

active

057843163

ABSTRACT:
Disclosed is an electrically erasable and programmable non-volatile storage device, which has: an erase operation control means for outputting a first signal to write or erase data to or from a memory cell when receiving a write or erase operation signal; a write or erase pulse width control means which decides a write or erase pulse width according to the first signal and outputs a pulse; a write or erase pulse generating means which generates a write or erase pulse to be applied to the memory cell according to the pulse output from the write or erase pulse width control means; a verifying means which decides whether or not the memory cell to which the write or erase pulse is applied reaches a threshold voltage and which outputs the decision as a second signal to the write or erase operation control means; and a write or erase pulse width setting means which outputs a third signal to change the write or erase pulse width on the basis of the first signal and the second signal to the write or erase pulse width control means.

REFERENCES:
patent: 5428568 (1995-06-01), Kobayashi et al.

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