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Device, chip and method for running program

A technology for running programs and controllers, applied in the field of single-chip microcomputers, which can solve the problems of reduced flexibility of chip programs and achieve the effect of improving flexibility

Active Publication Date: 2011-01-12
北京中星天视科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the program running in the MCU (Microprogrammed Control Unit) of the chip is generally placed in the internal ROM (Read Only Memory, Read Only Memory); although the ROM has the advantage of not losing data when the power is turned off, its The program is solidified in the chip, which can only be read but not written. The solidified program is called firmware (firmware). In this way, the flexibility of the chip program is greatly reduced.

Method used

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  • Device, chip and method for running program

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Embodiment Construction

[0024] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] In order for those skilled in the art to better understand the present invention, the storage principle of the E2PROM is briefly introduced below.

[0026] E2PROM (Electrically Erasable Programmable Read Only Memory, Electrically Erasable Programmable Read Only Memory) is a ROM that uses electricity to erase data; serial E2PROM is a memory that can be electrically erased and written online, with small size, It has the characteristics of simple interface, reliable data storage, online rewriting, low power consumption, and low-voltage writing, so it is widely used in single-chip microcomputer systems.

[0027] Serial E2PROM can be divided into three types according to the bus form, namely I2C (Inter-Integrated Circuit) bus, M...

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Abstract

The invention provides a device, a chip and a method for running a program. The device particularly comprises a microprogrammed control unit (MCU), a memory, an input interface module, a memory mapping module and an electrically erasable programmable read only memory (E2PROM) reading module, wherein the memory comprises the E2PROM; the input interface module is used for receiving a physical address of the E2PROM defined by a user; the memory mapping module is used for mapping an instruction address read by the MCU to be an E2PROM address; the E2PROM reading module is used for reading the E2PROM according to the E2PROM address; the read result of the E2PROM reading module is returned to the MCU through the memory mapping module; and the program is executed by the MCU. The device, the chip and the method are used for improving the flexibility of the chip program.

Description

technical field [0001] The invention relates to the technical field of single-chip microcomputers, in particular to a device, a chip and a method for running programs. Background technique [0002] At present, the program running in the MCU (Microprogrammed Control Unit) of the chip is generally placed in the internal ROM (Read Only Memory, Read Only Memory); although the ROM has the advantage of not losing data when the power is turned off, its The program is solidified in the chip, which can only be read but not written. The solidified program is called firmware (firmware). In this way, the flexibility of the chip program is greatly reduced. [0003] In a word, a technical problem that needs to be solved urgently by those skilled in the art is: how to improve the flexibility of the chip program. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a program running device, chip and method to improve the flexibility...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/30
Inventor 艾国
Owner 北京中星天视科技有限公司