Data transmission method and device for micro control unit and data transmission system

A data transmission method and a technology of a data transmission device, which are applied in the direction of electrical digital data processing, instruments, etc., can solve the problem of low efficiency of reading data, and achieve the effect of improving efficiency

Active Publication Date: 2011-01-19
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to propose a kind of data transmission method and device and data transmission system for micro control unit, to solve the low problem of MCU reading data from external memory element in the prior art

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  • Data transmission method and device for micro control unit and data transmission system
  • Data transmission method and device for micro control unit and data transmission system
  • Data transmission method and device for micro control unit and data transmission system

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Embodiment Construction

[0026] Embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0027] figure 1 is a schematic diagram of the basic structure of a data transmission system according to an embodiment of the present invention.

[0028] Such as figure 1 As shown, the data transmission system of the embodiment of the present invention mainly includes a micro control unit (MCU), a data transmission device and a storage device connected in sequence.

[0029] The data transmission method for MCU in the embodiment of the present invention is mainly completed by the data transmission device, and its main steps are as follows figure 2 as shown, figure 2 is a schematic diagram of a data transmission method for an MCU according to an embodiment of the present invention.

[0030] Step S21: Reading data from the storage device through the serial port.

[0031] Step S22: Convert the read data from serial to parallel.

[0032] In step S22, the seri...

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Abstract

The invention discloses a data transmission method and a data transmission device for a micro control unit (MCU) and a data transmission system for solving the problem of lower efficiency of reading data from an external memory element by the MCU in the prior art. The method comprises the following steps of: reading the data from a memory device through a serial port and storing the data in a cache, wherein the read data is converted from serialization to parallelism when the data is stored, and the serial clock frequency is higher than the parallel clock frequency; and determining a corresponding address in the cache of a specified address in the memory device of the MCU according to a corresponding relationship between a memory address of the cache and the memory address of the memory device, and then sending the data in the corresponding address to the MCU through a parallel port. The technical scheme of the invention can be used for improving the efficiency of accessing external memory devices by the MCU.

Description

technical field [0001] The invention relates to a data transmission method and device for a micro control unit and a data transmission system. Background technique [0002] Embedding a micro control unit (MCU) core in a chip product often requires the use of serial flash memory (Flash) as an external program storage device for the MCU because of the limited number of chip pins. When accessing Flash, it takes at least 10 clock cycles to obtain an 8-bit instruction, which leads to low execution efficiency of the MCU, and fetching instructions becomes the bottleneck of the MCU execution efficiency. [0003] In the prior art, the MCU has low efficiency in reading data from an external storage element, and there is no effective solution to this problem yet. Contents of the invention [0004] The main purpose of the present invention is to propose a data transmission method and device and a data transmission system for a microcontroller unit, so as to solve the problem of low e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/16G06F13/38
Inventor 于岗
Owner HISENSE VISUAL TECH CO LTD
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