Multiport register file

Details Multiport register file Multiport register file

1982-02-25

1985-01-01

Popek, Joseph A.

Static information storage and retrieval

Systems using particular element

Flip-flop

365155, G11C 1140

Patent

active

044919379

ABSTRACT:
A monolithic storage array (10) having multiple write ports (12, 14) and multiple read ports (16, 18), which may be used simultaneously in any combination. Each cell of the illustrative array has two storage flip-flops (Q1/Q4 and Q5/Q8), one for connection to each read port, and has a switching network (Q9-Q16) for connecting write-port row and column selection signals to set or reset both flip-flops as desired. Row selection for reading is effected by raising a power supply voltage coupled to the flip-flops, to increase noise immunity, and the device has only four isolated collectors, for high device density in monolithic form.

REFERENCES:
patent: 3675218 (1972-07-01), Sechler
patent: 4127899 (1978-11-01), Dachtera
patent: 4150392 (1979-04-01), Nonaka

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