LOW POWER MULTI-TOUCH SCAN CONTROL SYSTEM

  • US 20120054379A1
  • Filed: 08/30/2010
  • Published: 03/01/2012
  • Est. Priority Date: 08/30/2010
  • Status: Abandoned Application
First Claim
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1. An integrated control circuit, comprising:

  • a central processing unit operating in a normal full system power mode and in a reduced system low power mode;

    a memory;

    a plurality of peripheral units, at least one of which having;

    an input/output for interfacing with at least an external system for receiving information therefrom; and

    a process block for processing the received information from the external system and wherein, during the processing of the received information, processed data is stored in the at least one peripheral unit in a storage register when data is to be transferred to the memory or retrieved from the storage register when data to be processed is stored in the memory;

    wherein the input/output and process block are fully operable in the full system power mode and the reduced system power mode;

    a direct memory access (DMA) for transferring data directly between the at least one peripheral and the memory when such data transfer is required by the peripheral, the DMA operating in a full power DMA mode when data transfer is required and a low power DMA mode when data transfer is not required; and

    wherein the central processing unit is operable, in the normal full system power mode, to interface with the memory and with the at least one peripheral unit and the storage register to access data stored by the at least one peripheral unit.

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