Power-Up Based Integrated Circuit Configuration
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United States of America Patent
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Apr 11, 2017
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Apr 12, 2016
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Abstract
An integrated circuit having a plurality of selectable modes, functions and/or characteristics may be configured at the time of product manufacture by providing an appropriate resistance value pull-up resistor at an external connection (pin) of the integrated circuit package. At least one external connection (pin) may be used for such configuration of the integrated circuit. This is done without having to program the integrated circuit before placing on the product printed circuit board. The same integrated circuit may thus be used for a plurality of different products without requiring any pre-programming thereof. The integrated circuit's personality (desired characteristics) will be programmed automatically as soon as power is first applied to the finished product printed circuit board. Once the integrated circuit has been configured at power up, the external at least one connection (pin), initially used for configuration, can be used for either analog or digital input, output or input/output.
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