Method and mechanism of weak pull-up for use with a microcontrol

Details Method and mechanism of weak pull-up for use with a microcontrol Method and mechanism of weak pull-up for use with a microcontrol

1994-10-31

1998-03-24

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Integrated structure

327566, H01L 2500

Patent

active

057317380

ABSTRACT:
A weak pull-up disable method and mechanism therefor for use in association with a microcontroller incorporated in an integrated circuit. The weak pull-up disable mechanism is incorporated in the integrated circuit containing the microcontroller. The mechanism disables the weak pull-ups of I/O buffers of the microcontroller. The weak pull-ups serve to pull the voltage of the associated ports high. By so disabling the weak pull-ups, the need for a driver to sink the current when in input mode is eliminated. Elimination of the need for an external driver due to the weak pull-up disable mechanism reduces power consumption by the integrated circuit.

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