Nand cell type programmable read-only memory with common control

Details Nand cell type programmable read-only memory with common control Nand cell type programmable read-only memory with common control

1990-06-04

1991-08-27

Fears, Terrell W.

Static information storage and retrieval

Floating gate

Particular biasing

36518901, G11C 1300

Patent

active

050439421

ABSTRACT:
A NAND cell type EEPROM has a substrate, parallel bit lines formed above the substrate, and a memory cell section including an array of NAND type cell units associated with the same corresponding bit line. Each of the NAND type cell units has a series-circuit of eight data storage transistors and at least one selection transistor. Each data storage transistor has a floating gate for storing carriers injected thereinto by tunneling and a control gate respectively connected to word lines. A control gate driver circuit is provided in common for all the NAND type cell units that are assisted with the same bit line. Transfer gates are connected between the common driver circuit and the NAND cell units.

REFERENCES:
patent: 4233526 (1980-11-01), Kurogi et al.
patent: 4677590 (1987-06-01), Arakawa
patent: 4694314 (1987-09-01), Terada et al.

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