Integrated circuit and circuit arrangement for supplying intergrated circuit with electricity

Abstract

An integrated circuit for processing security-relevant data has data output circuits and access control circuits wherein a disturbance of the power supply of the access control circuits results in a blocking of the data output circuits.< / PTEXT>

Description

technical field [0001] The invention relates to an integrated circuit for processing security-critical data having a data output circuit and an access control circuit, and to a circuit arrangement for supplying power to security-critical parts of the integrated circuit. Background technique [0002] For a chip card containing data of higher security, the integrated circuit installed inside it may become the target of various intrusions in an attempt to access the data of higher security contained in the integrated circuit. [0003] Physical intrusion into a chip card may have various purposes: [0004] - read (probe) secret signal [0005] - Forcibly applying (imposing) a control signal. [0006] In security technology, security and control signals are therefore routed in mask layers that are difficult to access and are additionally protected by shielding layers (so-called protective layers). [0007] However, in addition to the above-mentioned methods of detecting and im...

AI Technical Summary

Problems solved by technology

[0009] The downside of dual power supply is that it consumes a lot of space on the IC, because the signal could otherwise be carried in the diffusion layer

The disadvantage of transmitting power only in the diffusion layer is that the diffusion layer usually has a higher resistance

Therefore either a voltage drop would result, or a correspondingly wide rail would have to be provided in the diffusion layer, which in turn would result in a large loss of space

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