Semiconductor device
First Claim
1. A semiconductor device comprising:
- a CPU comprising an unit;
a power source circuit configured to supply a first potential and a second potential;
a control circuit operationally connected to the CPU;
a memory block comprising a memory cell array;
a first switch configured to selectively supply the unit with one of the first potential and the second potential in accordance with a first control signal from the control circuit; and
a second switch configured to selectively supply the memory cell array with one of the first potential and the second potential in accordance with a second control signal from the control circuit.
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Accused Products
Abstract
A semiconductor device capable of stabilizing power supply by suppressing power consumption as much as possible. The semiconductor device of the invention includes a central processing unit having a plurality of units and a control circuit, and an antenna. The control circuit includes a means for outputting, based on a power supply signal including data on power supply from an antenna (through an antenna) or a load signal obtained by an event signal supplied from each of the units, one or more of a first control signal for stopping power supply to one or more of the units, a second control signal for varying a power supply potential supplied to one or more of the units, and a third control signal for stopping supplying a clock signal to one or more of the units.
29 Citations
20 Claims
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1. A semiconductor device comprising:
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a CPU comprising an unit; a power source circuit configured to supply a first potential and a second potential; a control circuit operationally connected to the CPU; a memory block comprising a memory cell array; a first switch configured to selectively supply the unit with one of the first potential and the second potential in accordance with a first control signal from the control circuit; and a second switch configured to selectively supply the memory cell array with one of the first potential and the second potential in accordance with a second control signal from the control circuit. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A semiconductor device comprising:
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a first unit; a second unit; a power source circuit configured to supply a first potential and a second potential; a control circuit; a memory block comprising a memory cell array; a first switch configured to selectively supply the first unit with one of the first potential and the second potential in accordance with a first control signal from the control circuit; a second switch configured to selectively supply the second unit with one of the first potential and the second potential in accordance with a second control signal from the control circuit; and a third switch configured to selectively supply the memory block with one of the first potential and the second potential in accordance with a third control signal from the control circuit. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A semiconductor device comprising:
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an unit; a power source circuit configured to supply a first potential and a second potential; a control circuit; a first memory block comprising a first memory cell array and a first row decoder; a second memory block comprising a second memory cell array and a second row decoder; a column decoder operationally connected to the first memory block and the second memory block; a first switch configured to selectively supply the unit with one of the first potential and the second potential in accordance with a first control signal from the control circuit; a second switch configured to selectively supply the first memory block with one of the first potential and the second potential in accordance with a second control signal from the control circuit; and a third switch configured to selectively supply the second memory block with one of the first potential and the second potential in accordance with a third control signal from the control circuit. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification