PIN determination for single-conductor interface

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12237835
APP PUB NO 20230253960A1
SERIAL NO

17667027

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Importance

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Abstract

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Circuits and methods for determining the characteristics of swappable pins in a peripheral in a 1-Wire or similar single-conductor system, thereby allowing each one of two pins to be either an I/O pin (connected to an I/O line) or a CAP pin (connected to a storage capacitor). Embodiments preform the following functions: detecting the initial phase of device startup; determining which of pins A and B is coupled to an I/O line (and thus is the I/O pin), and which is coupled to the storage capacitor (and thus is the CAP pin); and generating a flag signal indicating that determination to other circuitry within the peripheral. Detection of pin characteristics is determined at device startup by latching the fastest rising signal on pins A and B, flagging that signal line as being the I/O line, and preventing further changes to the latch output until the next startup cycle.

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Patent Owner(s)

  • MURATA MANUFACTURING CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Englekirk, Robert Mark Littleton, US 96 1663

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