Integrated Schottky logic read only memory

Details Integrated Schottky logic read only memory Integrated Schottky logic read only memory

1985-01-15

1987-04-28

Fears, Terrell W.

Static information storage and retrieval

Systems using particular element

Semiconductive

365105, 365203, 365210, G11C 1136

Patent

active

046619275

ABSTRACT:
An integrated Schottky logic (ISL) read only memory (ROM) uses ISL drivers and decoders connected to wordlines and data bitlines. The pattern of data stored in the ISL is determined by Schottky diodes which are connected between selected data bitlines and wordlines. Improved performance is achieved by using a leakage current compensation source (such as a wordline pullup resistor) connected to each wordline, and by using a programmable dummy load (such as one or more dummy bitlines). The pullup resistors compensate for bitline loading sensitivity caused by leakage currents of the workline drivers. The dummy bitlines are selectively connected to those wordlines which are lightly loaded to compensate for wordline loading sensitivity and thus equalize access time and improve wordline decoder noise margins.

REFERENCES:
patent: 4608672 (1986-08-01), Roberts

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