Analog Devices,inc.

Fintan Michael Leamy

Gary Casey

Thomas Brendan O'Dowd

Brian Joseph Moss

An integrated circuit ( ) comprises a microprocessor ( ), an ADC ( ) and a serial interface ( ) for communicating the integrated circuit with an external device. An analogue input port ( ) is provided for inputting analogue signals to the ADC ( ). A switch circuit ( ) is provided for selectively and alternately configuring the integrated circuit ( ) to operate in a first mode and in a second mode. In the first mode the serial interface ( ) communicates with the microprocessor ( ) through the switch circuit ( ), and in the second mode the serial interface ( ) communicates with the ADC ( ) through the switch circuit ( ). In the second mode conversion results are transferred from the ADC ( ) through the switch circuit ( ) to the serial interface ( ) independently of the microprocessor ( ) for transmission therefrom to an external device. In the first mode the ADC ( ) is operable under the control of the microprocessor ( ).

INTEGRATED CIRCUIT COMPRISING A MICROPROCESSOR AND AN ANALOGUE TO DIGITAL CONVERTER WHICH IS SELECTIVELY OPERABLE UNDER THE CONTROL OF THE MICROPROCESSOR AND INDEPENDENTLY OF THE MICROPROCESSOR, AND A METHOD FOR OPERATING THE INTEGRATED CIRCUIT

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Ennis, Ireland

Fintan Michael Leamy