SEMICONDUCTOR DEVICE
First Claim
1. A semiconductor device comprising:
- basic blocks each comprising a logic circuit; and
programming cells configured to control supply of a power supply potential to each of the basic blocks,wherein the programming cells each comprise a first transistor functioning as a switching element and a second transistor configured to control supply of a potential to a gate electrode of the first transistor, andwherein the second transistors each comprise a channel formation region comprising an oxide semiconductor.
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Accused Products
Abstract
It is an object to provide a semiconductor device in which power consumption can be reduced. It is another object to provide a highly reliable semiconductor device using a programming cell, such as a programmable logic device (PLD). In accordance with a change in a configuration of connections between basic blocks, power supply voltage furnishing to the basic blocks is changed. That is, when the structure of connections between the basic blocks is such that a basic block does not contribute to a circuit, the supply of the power supply voltage to this basic block is stopped. Further, the supply of the power supply voltage to the basic blocks is controlled using a programming cell formed using a field effect transistor whose channel formation region is formed using an oxide semiconductor, the field effect transistor having extremely low off-state current or extremely low leakage current.
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Citations
36 Claims
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1. A semiconductor device comprising:
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basic blocks each comprising a logic circuit; and programming cells configured to control supply of a power supply potential to each of the basic blocks, wherein the programming cells each comprise a first transistor functioning as a switching element and a second transistor configured to control supply of a potential to a gate electrode of the first transistor, and wherein the second transistors each comprise a channel formation region comprising an oxide semiconductor. - View Dependent Claims (5, 9, 13, 17, 21, 25, 29, 33)
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2. A semiconductor device comprising:
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basic blocks each comprising a logic circuit; and programming cells each configured to control connections between two of the basic blocks, wherein the programming cells each comprise a first transistor functioning as a switching element and a second transistor configured to control supply of a potential to a gate electrode of the first transistor, and wherein the second transistors each comprise a channel formation region comprising an oxide semiconductor. - View Dependent Claims (6, 10, 14, 18, 22, 26, 30, 34)
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3. A semiconductor device comprising:
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basic blocks each comprising a logic circuit; first programming cells each configured to control connections between two of the basic blocks; and second programming cells configured to control supply of a power supply potential to each of the basic blocks, wherein the first programming cells and the second programming cells each comprise a first transistor functioning as a switching element and a second transistor configured to control supply of a potential to a gate electrode of the first transistor, and wherein the second transistors each comprise a channel formation region comprising an oxide semiconductor. - View Dependent Claims (7, 11, 15, 19, 23, 27, 31, 35)
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4. A semiconductor device comprising:
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a first basic block and a second basic block, each comprising a logic circuit; and a circuit configured to control a connection between the first basic block and the second basic block, wherein the circuit comprises a first transistor functioning as a switching element and a second transistor configured to control supply of a potential to a gate electrode of the first transistor, and wherein the second transistor comprises a channel formation region comprising an oxide semiconductor. - View Dependent Claims (8, 12, 16, 20, 24, 28, 32, 36)
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Specification