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Data exchange device for IIC bus and CAN bus

A CAN bus, data exchange technology, applied in the direction of electrical digital data processing, instruments, etc., can solve problems such as the inability of signals to communicate

Pending Publication Date: 2017-06-16
AILEX TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a data exchange device used between the IIC bus and the CAN bus to solve the current problem that the signals between the IIC bus and the CAN bus cannot be communicated

Method used

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  • Data exchange device for IIC bus and CAN bus
  • Data exchange device for IIC bus and CAN bus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Such as figure 1 As shown, the present embodiment provides a kind of data exchange device that is used between IIC bus and CAN bus, and described data exchange device is arranged between described IIC bus 1 and CAN bus 5, and described data exchange device comprises: Digital isolator 2, microprocessor 3 and CAN transceiver 4.

[0065] One end of the digital isolator 2 is connected to the IIC bus 1, and the other end is connected to the microprocessor 3; one end of the microprocessor 3 is connected to the digital isolator 2, and the other end is connected to the CAN transceiver and one end of the CAN transceiver 4 is connected to the microprocessor 3, and the other end is connected to the CAN bus 5.

Embodiment 2

[0067] This embodiment provides a kind of data exchange device used between IIC bus and CAN bus, the data exchange device in this embodiment is similar to the data exchange device in embodiment 1, and difference is:

[0068] combine figure 1 and figure 2 , in this embodiment, the IIC bus 1 includes an SDA line 6 and a CLK line 7;

[0069] The digital isolator 2 includes a plurality of pins, figure 2 Among them, 1a-16a are 16 pins of the digital isolator 2, wherein the fourth pin 4a and the fifth pin 5a of the digital isolator 2 are commonly connected to the SDA line 6, and the digital isolator 2 The sixth pin 6a is connected to the CLK line 7, the twelfth pin 12a and the thirteenth pin 13a of the digital isolator 2 are commonly connected to the microprocessor 3, and the digital isolator 2 The eleventh pin 11a is connected to the microprocessor 3;

[0070] A first diode 8 is connected between the fifth pin 5a of the digital isolator 2 and the SDA line 6, and the forward e...

Embodiment 3

[0084] This embodiment provides a kind of data exchange device used between IIC bus and CAN bus, the data exchange device in this embodiment is similar to the data exchange device in embodiment 2, and difference is:

[0085] In this embodiment, the power terminal connected to the first pin of the digital isolator and the power terminal connected to the sixteenth pin of the digital isolator are different power terminals;

[0086] The resistance value of the first resistor is 35Ω, and the resistance value of the second resistor is 35Ω;

[0087] The resistance value of the third resistor is 120Ω;

[0088] The size of the first capacitor is 10uF, and the size of the second capacitor is 0.1uF.

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PUM

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Abstract

The invention discloses a data exchange device for an IIC bus and a CAN bus. The data exchange device is arranged between the IIC bus and the CAN bus, and the data exchange device includes a digital isolator, a microprocessor and a CAN transceiver. One end of the digital isolator is connected to the IIC bus, and the other end of the digital isolator is connected to the microprocessor. One end of the microprocessor is connected to the digital isolator, and the other end of the microprocessor is connected to the CAN transceiver. One end of the CAN transceiver is connected to the microprocessor, and the other end of the CAN transceiver is connected to the CAN bus. The data exchange device can be used for data exchange of the IIC bus and the CAN bus and achieves signal conversion.

Description

technical field [0001] The invention relates to the field of hardware communication, in particular to a data exchange device used between an IIC bus and a CAN bus. Background technique [0002] The IIC bus is a two-wire, bidirectional, serial bus. The bus is composed of two lines, one is the serial clock line CLK, and the other is the serial number line SDA. The devices on the bus are in a simple master-slave relationship. IIC The bus signal is coordinated with the CLK clock, and SDA transmits data. In IIC communication, there are start signal, data signal, response signal, stop signal, etc. [0003] The CAN bus is a serial communication protocol bus for real-time applications. It uses twisted-pair wires to transmit signals, one is the serial data line CANH, and the other is the serial data line CANL, which passes the potential of the two signal lines. Poor transmission signal. If the CANH level is greater than the CANL level 2V, it is the dominant level indicating signal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/40G06F13/42
CPCG06F13/4004G06F13/4291G06F2213/40G06F2213/0016
Inventor 李子樵汪飞
Owner AILEX TECH GRP CO LTD
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