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Semiconductor device

A semiconductor and device technology, applied in the field of semiconductor devices, can solve problems such as abuse, and achieve the effect of protecting information, high security, and high-speed storage

Inactive Publication Date: 2006-04-12
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the future, with the development of such analysis devices and analysis techniques, criminal acts that abuse such techniques may occur
Especially in recent years, IC cards, etc. have been equipped with electronic money functions, and if information such as passwords are leaked, it will become a big problem

Method used

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  • Semiconductor device
  • Semiconductor device
  • Semiconductor device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0075] figure 2 It is a block diagram showing the configuration of a logic circuit block in the semiconductor device according to Embodiment 1 of the present invention.

[0076] The logic circuit block 6 in the semiconductor device of the embodiment of the present invention includes as a functional block: a storage unit 2 having a non-volatile storage element 1 for storing data; a computing unit 3 using the data stored in the storage unit 2 and The input unit 5 performs calculations on data input from the outside; and the output unit 4 outputs calculation results based on the calculation unit 3 .

[0077] According to this configuration, the information stored in the storage unit 2 is output only to the calculation unit 3, and the information stored in the storage unit 2 is not output to an external path, and the calculation result of the calculation unit 3 is output to the outside. It is possible to avoid the information stored in the nonvolatile storage element 1 from bein...

Embodiment approach 2

[0101] Figure 9 It is a block diagram showing the structure of a semiconductor device according to Embodiment 2 of the present invention. The semiconductor device 100 of this figure comprises: computing element (below, become PE array, computing element is referred to as PE) 101; Input buffer 102; Output buffer 103; Address buffer 104; Row decoder 105; Column decoder 106; An amplifier for reading and writing (hereinafter referred to as an RW amplifier) ​​108 ; a shift register 109 ; and a control circuit 110 . The semiconductor device 100 is an FPGA (Field Programmable Gate Array) whose function can be changed by programming.

[0102] Such as Figure 10 As shown, PE101 is composed of multiple PE11 regularly arranged in rows and columns.

[0103] Programming of the PE array 101 proceeds as follows. The configuration form data from the external writing device 200 is output to the RW amplifier 108 through the shift register 109 . The address from the writing device 200 is o...

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Abstract

A semiconductor device of the present invention includes: a nonvolatile storage means for storing data, an arithmetic means for performing an arithmetic operation by using data stored in the storage means and data inputted from the outside through an input means and an output means for outputting an arithmetic result by the arithmetic means as one functional block. The output line of the storage means is connected to only the arithmetic means.

Description

technical field [0001] The present invention relates to a semiconductor device which itself has a logic circuit of a nonvolatile memory element. Background technique [0002] In recent years, many system LSIs have been developed in which large-scale logic circuits and nonvolatile memory cores such as microcomputers are placed on the same chip. In order to realize multiple functions at low cost, it is effective to reduce the number of assembled chips and reduce costs by mounting various functional blocks in one chip. [0003] In addition, in recent years, the need to store programs and codes inside LSIs, and the need to store top-secret information such as passwords has increased. For example, if Figure 1A As shown, the LSI includes a memory unit 2 and an input / output unit 4 including a nonvolatile memory element 1 inside the LSI, and the nonvolatile memory element 1 holds confidential information. When these data are stored in a nonvolatile memory such as a single flash m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11C16/06G11C16/22H01L27/115G06F12/14G06F21/62G06F21/60G06F21/75G06F21/79G06F21/86
Inventor 山田隆善香山信三加藤刚久岛田恭博
Owner PANASONIC CORP