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IC storage card

A memory card and main storage technology, applied to record carriers, instruments, computer parts, etc. used in machines, which can solve the problems of large storage volume, increase in the number of data input and output pins, and inability to modify stored data, and achieve improved performance. Efficiency, the effect of speeding up

Inactive Publication Date: 2004-08-18
上海华园微电子技术有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0008] The present invention provides an IC memory card, aiming at overcoming the technical problems that the stored data cannot be modified; the storage volume is too large; the efficiency of instruction execution is not high and the number of data input and output pins increases

Method used

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Examples

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Embodiment Construction

[0021] The present invention is described in detail below in conjunction with accompanying drawing:

[0022] Such as figure 1 Shown: the technical solution of the present invention includes: main storage unit 1, comparison unit 2, first control unit 3 and the first instruction register unit 31 included therein, the second control unit 4 and the second instruction register unit included therein Unit 41, gating unit 5, first buffer unit 6, second buffer unit 7, input and output interface unit 8; after the instruction is input, the device can temporarily store the instruction in the first instruction storage unit 31 or the second instruction storage unit 41 , through the comparison unit 2, the instruction of type A is sent to the second control unit 4 for execution, the instruction of type B is sent to the first control unit 3 for execution, and the control signal generated by the first control unit is sent to the first control unit 5 through the gate unit 5. Buffer unit 6, the ...

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Abstract

An IC storing card wherein the main storage unit and the programming unit employ flash memory units, two static state random memory units, and a serial input / output interfaces, when a command is inputted, the device command is temporarily stored in a command registering unit, the type A command is sent to the second control unit for execution, the type B command is sent to the first control unit for execution, in the execution term, the control signal produced by the control unit flows to the two static random storage units through data of the selector control system bus, thus preventing errors for data communication between the system resources when two commands are operated simultaneously.

Description

technical field [0001] The invention relates to a semiconductor integrated circuit, in particular to an IC memory card. Background technique [0002] A memory card is a new type of storage tool with a microprocessor and data information processing capabilities. The core of the memory card is one of the integrated circuit chips with a central processing unit, and consists of random access memory (hereinafter referred to as RAM), read-only memory (hereinafter referred to as ROM), electrically erasable electrically programmable memory (hereinafter referred to as EEPROM) and dozens of bytes of programmable ROM (hereinafter referred to as PROM). Through the monitoring program composed of its on-chip operating system (hereinafter referred to as COS), all the data are organically combined to form a file system, and various specific functions can be completed. [0003] Since the 1970s, the basic structure inside the memory card has been a complete computin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/07
Inventor 尚为兵王丞印义言
Owner 上海华园微电子技术有限公司
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