Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Serial memory circuit shared by two singlechips

A technology of serial memory and single-chip microcomputer, which is applied in the direction of instruments, simulators, computer control, etc., can solve the problems of difficult to record the fault time and state, fault self-monitoring and maintenance of instruments and control units, etc. Effects of self-monitoring ability and maintenance ability, improvement of dialogue ability, and improvement of work reliability

Inactive Publication Date: 2011-11-23
BIOCHEM ENG COLLEGE OF BEIJING UNION UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the single-chip microcomputer itself fails, it is difficult for the instrumentation or control unit to record the failure time and state and save it, which brings inconvenience to the fault self-monitoring and maintenance of the instrumentation or control unit, which is currently in practical applications. question

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Serial memory circuit shared by two singlechips
  • Serial memory circuit shared by two singlechips
  • Serial memory circuit shared by two singlechips

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] Attached below Figure 1-2 The present invention will be described in detail.

[0011] The circuit block diagram of dual microcontrollers sharing one serial memory is as follows: figure 1 As shown, the schematic diagram of dual microcontrollers sharing a serial memory circuit is as follows figure 2 shown. exist figure 1 Among them, A single-chip microcomputer and B single-chip microcomputer are connected together through serial communication, and the isolation driving device separates A single-chip microcomputer and B single-chip microcomputer from the serial memory. Connect with serial memory.

[0012] figure 2 is a specific circuit diagram. exist figure 2 Among them, the isolation control device is composed of a 74LS244 tri-state gate and a 74LS136 XOR gate and corresponding connecting lines, the serial memory adopts the model NM93C46, the two microcontrollers adopt the model MCS-89C52, the resistance R 1 , R 2 , R 3 It is a pull-up resistor, and its func...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a serial memory circuit shared by two singlechips, and belongs to the field of instruments. The serial memory circuit comprises an A singlechip, a B singlechip and a serial memory, and is characterized in that: the A singlechip and the B singlechip are connected with the serial memory through an isolation driving device; the isolation driving device is controlled by the Asinglechip and the B singlechip; in the process that each singlechip stores and read data from the serial memory, the storage and read actions of the other singlechip to the serial memory can be simultaneously blocked; and the A singlechip is connected with the B singlechip through serial communication. The serial memory circuit takes the two singlechips as a core, work reliability of an instrument or a control unit is improved, fault monitoring capacity and maintenance capacity are improved, and human-computer dialogue capacity is improved.

Description

technical field [0001] The invention relates to a serial memory circuit shared by two single-chip microcomputers, belongs to the field of instrumentation and can be used in various instruments and control units. Background technique [0002] At present, a single instrument or some control units mostly use a single-chip microcomputer as the control core. When the single-chip microcomputer needs external memory, in order to save the I / O resources of the single-chip microcomputer, the serial memory is mostly used. Usually, the single-chip microcomputer is directly connected to the serial memory. When the single-chip microcomputer itself fails, it is difficult for the instrument or control unit to record the failure time and state and save it, which brings inconvenience to the self-monitoring and maintenance of the instrument or control unit. question. SUMMARY OF THE INVENTION [0003] The purpose of the invention is to use two single-chip microcomputers as the core of the in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/40G05B19/042
Inventor 杨春兰张念鲁
Owner BIOCHEM ENG COLLEGE OF BEIJING UNION UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com