Non-CPU integrated circuit card for optimizing storage logic partition structure

Abstract

IC card comprises address counter, memory, I / O interface and controller. Logic partition of the memory includes a control area capable of writing a control word of access authority and several user data areas. Different control bit position in the said control word determines access authorities of user data areas. The said controller also includes a register of memory access mode. Based on values of partition indication signal, operation indication signal and relevant control bit in the said register, the controller carries out logic operation to control generation of operation enable signal for each user data area. In the invention, access authorities for multiple user data areas in the IC card can be set up by issuer so as to suit variational services causing different requirement for authority and capacity of each data area in memory of IC card. Thus, the invention saves developing time and cost greatly.

Description

technical field [0001] The invention relates to an integrated circuit card (IC card), in particular to an IC card whose physical memory is divided into multiple logical partitions and does not contain a CPU. Background technique [0002] In the information society, people put forward higher requirements on the security, reliability and ease of use of information carriers. The IC card with storage and encryption capabilities provides a convenient and reliable means for modern information processing and transmission with its strict data security, wide application flexibility and powerful function expansion. [0003] Fig. 1 is the structural representation of the IC card chip that does not contain CPU in the prior art, is made up of address counter 1, controller 2, I / O interface 3 and memory 4, CLK, RST and IO are external clock input signal, reset respectively signals and input and output signals. Wherein, memory 4 is divided into issue data area, key area and data area, as ...

AI Technical Summary

Problems solved by technology

However, the memory plays a decisive role in the area, power consumption and yield of the chip. Since the area of ​​the IC card chip is relatively small, it is very sensitive to the increase of the area, and increasing the memory capacity will bring a series of problems.

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