LCD CONTROLLER CHIP
First Claim
1. An integrated circuit, comprising:
- a host interface control block for providing a connection between the integrated circuit and a master controller device;
a plurality of input/output pins;
capacitive touch sense circuitry enabling detection of actuation of at least one capacitive switch of a capacitive sensor array connected to at least a portion of the plurality of input/output pins;
an LCD controller for driving at least one LCD connected to at least a portion of the plurality of input/output pins; and
wherein responsive to control signals received from the master controller device over the host interface control block, the integrated circuit may be configured to monitor outputs from the capacitive sensor array in a first mode of operation, to drive the at least one LCD in a second mode of operation and to both monitor outputs of the capacitive sensor array and drive the at least one LCD in a third mode of operation.
1 Assignment
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Accused Products
Abstract
An integrated circuit comprises a host interface control block for providing a connection between the integrated circuit and a master controller device. The integrated circuit further includes a plurality of I/O pins. A capacitive touch sense circuitry enables detection of actuation of at least one capacitor switch of a capacitive sensor array connected to at least a portion of the plurality of I/O pins. An LCD controller drives at least one LCD connected to at least a portion of the plurality of I/O pins. The integrated circuit, responsive to signals received from the master controller device over the host interface control block, may be configured to monitor outputs from the capacitive sensor array in a first mode of operation. In a second mode of operation, the capacitive sensor array may be configured to drive at least one LCD. Finally, in a third mode of operation, the integrated circuit may be configured to both monitor outputs of the capacitive sensor array and drive the at least one LCD.
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Citations
18 Claims
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1. An integrated circuit, comprising:
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a host interface control block for providing a connection between the integrated circuit and a master controller device; a plurality of input/output pins; capacitive touch sense circuitry enabling detection of actuation of at least one capacitive switch of a capacitive sensor array connected to at least a portion of the plurality of input/output pins; an LCD controller for driving at least one LCD connected to at least a portion of the plurality of input/output pins; and wherein responsive to control signals received from the master controller device over the host interface control block, the integrated circuit may be configured to monitor outputs from the capacitive sensor array in a first mode of operation, to drive the at least one LCD in a second mode of operation and to both monitor outputs of the capacitive sensor array and drive the at least one LCD in a third mode of operation. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An integrated circuit, comprising:
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a host interface control block for providing a connection between the integrated circuit and a master controller device, wherein the host interface control block comprises a plurality of interface communication protocols, each of the plurality of interface communications programmable selectable responsive to control signals from the master controller device; a plurality of input/output pins; capacitive touch sense circuitry enabling detection of actuation of at least one capacitive switch of a capacitive sensor array connected to at least a portion of the plurality of input/output pins; an LCD controller for driving at least one LCD connected to at least a portion of the plurality of input/output pins; and wherein responsive to control signals received from the master controller device over the host interface control block, the integrated circuit may be configured to monitor outputs from the capacitive sensor array in a first mode of operation, to drive the at least one LCD in a second mode of operation and to both monitor outputs of the capacitive sensor array and drive the at least one LCD in a third mode of operation; and wherein in the first mode of operation the capacitive touch sense circuitry scans from a start pin to an end pin to detect actuations of the capacitive switches within the capacitive sensor array in a first configuration and scans each row of a selected column before proceeding to a next column in a second configuration. - View Dependent Claims (9, 10, 11)
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12. A method for providing programmable combinations of capacitive switch functionalities and LCD driver control functionalities, comprising the steps of:
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providing a connection between an integrated circuit and a master controller device; detecting actuation of at least one capacitive switch of a capacitive sensor array connected to at least a portion of a plurality of input/output pins when the integrated circuit is configured in a first mode of operation; driving at least one LCD connected to at least a portion of the plurality of input/output pins in a second mode of operation; and simultaneously detecting actuation of at least one capacitive switch of the capacitive sensor array connected to at least a portion of a plurality of input/output pins and driving at least one LCD connected to at least the portion of the plurality of input/output pins. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification