Flexible, reconfigurable terminal pin

Details Flexible, reconfigurable terminal pin Flexible, reconfigurable terminal pin

1988-03-14

1989-05-30

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307242, 307475, 307465, 364716, H03K 1716, H03K 1704, H03K 3013, H04Q 900

Patent

active

048354147

ABSTRACT:
A terminal pin (28) of an integrated circuit can be controlled in three ways to function as an input or an output pin. A logic circuit (16, 20, 23, 26) permits the pin to be synchronously enabled as an output terminal under software control. The circuit also permits the pin to be asynchronously enabled as an output terminal under control of a signal applied to another pin of the integrated circuit. The circuit also permits continuous control of the terminal as an output pin. Maskable bits stored in registers (18, 22) and configuration bits stored in register (25) affords additional flexibility in establishing which of the three ways the terminal pin wil be controlled.

REFERENCES:
patent: 4479067 (1984-10-01), Fujita
patent: 4621202 (1986-11-01), Pumo
patent: 4695740 (1987-09-01), Carter
patent: 4703198 (1987-10-01), Porter et al.
patent: 4772888 (1988-09-01), Kimura
patent: 4774422 (1988-09-01), Donaldson et al.

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