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Interface apparatus based on I2C bus and read-write apparatus employing the same

A technology of an interface device and a reading and writing device, which is applied in the directions of instruments, electrical digital data processing, digital data processing parts, etc. The effect of fast plugging and improving work efficiency

Inactive Publication Date: 2009-06-10
SHENZHEN TCL NEW-TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, it is very inconvenient to dismantle the original equipment or products, and dismantling is a time-consuming and troublesome thing. If the operation is not done properly during the disassembly process, the circuit components will be damaged, which is harmful to production and The product itself is very unfavorable and needs improvement

Method used

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  • Interface apparatus based on I2C bus and read-write apparatus employing the same
  • Interface apparatus based on I2C bus and read-write apparatus employing the same
  • Interface apparatus based on I2C bus and read-write apparatus employing the same

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Embodiment Construction

[0044] Taking TV as an example, a best way of realizing the present invention will be introduced below. Such as figure 1 , figure 2 shown, this dedicated I 2 The C interface device contains 5 signal terminals in total, which are:

[0045]①SCL terminal: I 2 C bus clock line, connected with the SCL inside the TV,

[0046] ②SDA terminal: I 2 C bus data line, connected with SDA inside the TV,

[0047] ③V CC Terminal: External I 2 C power supply input (generally +5V, you can input the corresponding voltage if you have special requirements), and the E inside the TV 2 The PROM power supply terminal is connected,

[0048] ④GND terminal: Ground, and E inside the TV 2 PROM power ground and I 2 The ground wire of C is connected,

[0049] ⑤ID terminal: Operation function selection input terminal, connected with the reset (RESET) pin of the MCU inside the TV. This pin has two states, which vary with the function.

[0050] The above-mentioned 5 terminals are arranged in an in...

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Abstract

The invention relates to an interface device based on I2C bus and relative read-write equipment, wherein the interface device comprises: SCL terminal, SDA terminal, VCC terminal, GND terminal, and ID terminal; the cable meeting the I2C bus interface connects the I2C bust with the external memory via said interface device, to process the read-write operation; and via connecting the interface device to MCU, the data memory can form read-write equipment, to read-write data quickly, to support the system upgrade and debug data modification of electric product.

Description

technical field [0001] The present invention involves the use of I 2 C bus protocol for control and data transmission interface devices and related reading and writing devices, especially through I 2 The C bus protocol reads and writes an interface to a single-chip microcomputer or a data device and a read-write device using the interface. Background technique [0002] I 2 The C bus is a convenient way to transmit data between integrated circuits. Its biggest advantage is that it only uses two lines for transmission, which brings convenience to circuit board wiring. Because of this, it is widely used in various in electronic products. [0003] However, such products will encounter subsequent reading and writing upgrade problems during the production process and after-sales service. We know that the product always needs to be debugged during the production process. Since the manufacturer has special read-write equipment, data update is not a problem, but after sales, ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/40G06F1/16
Inventor 付遥远王峰党伟珍陈晓春罗志刚张春青
Owner SHENZHEN TCL NEW-TECH CO LTD
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