Option setting circuit for interface circuit

Details Option setting circuit for interface circuit Option setting circuit for interface circuit

1993-12-09

1995-08-01

Hudspeth, David R.

Electronic digital logic circuitry

Multifunctional or programmable

Having details of setting or programming of interconnections...

326 86, 327143, 327530, H03K 19173, H03K 190175

Patent

active

054382793

ABSTRACT:
In a microcomputer, a circuit is provided which performs the option setting of the condition of an I/O port. The option setting is repeatedly performed while the microcomputer is operating. As a result, even if the option setting is changed to an incorrect setting due to noise from external sources, the incorrect option setting is immediately returned to the correct setting. Moreover, the option setting is never reset at the time of resetting other than the resetting performed at the time of the turning on of the power.

REFERENCES:
patent: 4697107 (1987-09-01), Haines
patent: 4783606 (1988-11-01), Goetting
patent: 4806793 (1989-02-01), Golab
patent: 5059828 (1991-10-01), Tamagawa

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