Semiconductor device
a technology of semiconductors and devices, applied in logic circuits, digital storage, instruments, etc., can solve the problems of difficult operation as logic circuits that require data return, high manufacturing technology, and inconvenient manufacturing steps for high-mix low-volume production, etc., to achieve the effect of optimizing the scale of memory cell blocks and facilitating data feedback
Inactive Publication Date: 2009-11-26
TAIYO YUDEN KK
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Benefits of technology
[0009]Accordingly, it is an object of the present invention to provide a semiconductor device for serving as a memory capable of functioning as a logic circuit, facilitating feedback of data, and having an optimum scale of a memory cell block.
[0011]In a semiconductor device according to the present invention, a memory that functions as a logic circuit can easily perform data feedback, and the scale of a memory cell block can be optimized.
Problems solved by technology
However, the manufacturing steps are not suitable for high-mix low-volume production, since the steps are costly.
However, since an FPGA includes a plurality of components (e.g., a logic circuit, interconnection lines, and switches), a multilayer interconnection structure including a plurality of interconnection layers and a highly advanced manufacturing technique are disadvantageously required for a semiconductor process.
Accordingly, it is difficult to operate as a logic circuit that requires return of data (i.e., feedback of data to the memory cell from which data was output).
Method used
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Embodiment Construction
[0024]A semiconductor device according to an embodiment of the present invention is described below with reference to the accompanying drawings.
[0025]FIG. 1 is a block diagram of a semiconductor device and an information processing apparatus according to the present embodiment. An information processing apparatus 100 is a computer apparatus. The information processing apparatus 100 includes an input unit 101 (e.g., a keyboard), a storage unit 102 (e.g., a hard disk), a memory 103 (e.g., a random access memory (RAM)), an output unit 104 (e.g., a cathode ray tube (CRT)), a communication unit 105 serving as communication equipment, and a processing unit 106 (e.g., a central processing unit (CPU)).
[0026]Note that bit data generated by the information processing apparatus 100 (refer to step S1104 shown in FIG. 12 described below) may be stored in a read only memory (ROM) (not shown).
[0027]A semiconductor device 110 is connected to the communication unit 105 of the information processing ...
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A semiconductor device includes a plurality of memory cell blocks, each including a plurality of memory cells each storing a predetermined amount of data. Each of the memory cell blocks stores, in the memory cells thereof, truth table data used for outputting desired logical values in response to input of a given address so as to function as a logic circuit. The number of inputs and the number of outputs of the memory cell block is three or more, and the memory cell blocks are connected to each other so that three or more outputs from one memory cell block are input to three or more other memory cell blocks.
Description
BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a semiconductor device capable of operating a memory as a logic circuit.[0003]2. Description of the Related Art[0004]Existing semiconductor devices, such as a large scale integrations (LSIs), are manufactured through a plurality of steps including a functional design step, a logic circuit design step, a wafer production step, and an assembly step. These manufacturing steps are suitable for mass production for manufacturing a large number of products of the same type. However, the manufacturing steps are not suitable for high-mix low-volume production, since the steps are costly.[0005]Accordingly, a technology suitable for high-mix low-volume production has been developed. An example of such a technology is a field programmable gate array (FPGA). An FPGA is a semiconductor device (e.g., an LSI) that allows a user to program a logic circuit after being manufactured.[0006]However, since an ...
Claims
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IPC IPC(8): G11C8/00G11C7/00
CPCH03K19/1776H03K19/17728
InventorSATOH, MASAYUKI
OwnerTAIYO YUDEN KK