Split memory array sharing same sensing and bit decode circuitry

Details Split memory array sharing same sensing and bit decode circuitry Split memory array sharing same sensing and bit decode circuitry

1975-08-25

1976-09-28

Trafton, David L.

Communications: electrical

Digital comparator systems

307238, 340173CA, G11C 700

Patent

active

039835448

ABSTRACT:
A split random access memory array is integrated with a read only storage array and shares the same sense and bit decode circuitry. Each bit line of the integrated array is provided with an isolation switch between the random access and read only portions. The switch conducts when reading the read only portion but does not conduct (isolates) when writing or reading the random access portion. The isolation switch also permits the initialization of the shared differential sensing latch and facilitates the rapid writing and reading of the random access portion by removing the bit line loading due to the read only portion on such occasions.

REFERENCES:
patent: 3798621 (1974-03-01), Baitinger et al.
patent: 3820086 (1974-06-01), Ho et al.
patent: 3821715 (1974-06-01), Hoff et al.
patent: 3882326 (1975-05-01), Kruggel
patent: 3949381 (1976-04-01), Dennard et al.

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