Integrated circuit being capable of transferring signals of diff

Details Integrated circuit being capable of transferring signals of diff Integrated circuit being capable of transferring signals of diff

1998-07-17

2000-04-18

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

326 63, 326 80, H03L 500

Patent

active

060520140

ABSTRACT:
An input/output pad part <5> comprises an input protection circuit <51> which is connected to an external terminal <OT>, an output buffer <52> which is connected to the input protection circuit <51>, a TTL input detection circuit <53>, a Schmidt type input detection circuit <54> and a voltage conversion part <55>enabling transfer of signals having different voltage levels between the same and an internal circuit. Thus provided is a microcomputer employing different power supply voltages for circuits constructing an input/output part and an internal circuit such as a logic part or a memory part, which is capable of transferring signals of different voltage levels between the internal circuit and the circuits constructing the input/output circuit and performing slew rate control.

REFERENCES:
patent: 5510731 (1996-04-01), Dingwall
patent: 5623222 (1997-04-01), Tamagawa
patent: 5661414 (1997-08-01), Shigehara et al.
patent: 5828231 (1998-10-01), Bazargan

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