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Microcontroller and input/output system applied to microcontroller

An output system, micro-control technology, applied in the direction of instruments, electrical digital data processing, etc., can solve the problems of the fixed input/output interface function cannot be adjusted, the circuit structure is complicated, etc.

Active Publication Date: 2022-01-18
旋智电子科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a micro-control device and an input / output system applied to the micro-control device, which are used to solve the problems of complex circuit structure in the MCU chip structure in the prior art, and the function curing of the input / output interface cannot be adjusted, etc.

Method used

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  • Microcontroller and input/output system applied to microcontroller
  • Microcontroller and input/output system applied to microcontroller
  • Microcontroller and input/output system applied to microcontroller

Examples

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example 1

[0102] Example 1: UART interface

[0103] UART is a kind of asynchronous serial communication protocol, which is used for asynchronous communication. In the UART interface protocol, Pin TX For sending data out, Pin RX For receiving data from the outside, use the Pin TX and Pin RX Data transmission is performed at a fixed transmission rate. In the data transmission mode, the programmable interface engine obtains the data output request from the main processor, accesses the storage unit according to the data output request and obtains the UART TX code corresponding to the data output request from the storage unit, and executes the UART TX code , so as to be programmed to match the UART engine of the UART interface protocol, the UART engine will generate status information (such as start bit, data bit, and stop bit, etc.) at the same time. The data control unit uses these state information to drive the data output register unit and the input / output interface. TX Perform dat...

example 2

[0105] Example 2: I2C interface

[0106] I2C is a multi-master and multi-slave serial bus developed by PHILIPS for connecting microcontrollers and their peripherals. The I2C bus uses a serial data line (SDA, Serial Data) plus a serial clock line (SCL, Serial Clock) to complete data transmission and peripheral device expansion. In this second example, it is assumed that the I / O system is a master I2C and it will drive the serial clock.

[0107] In the data sending mode, when the main processor needs to send data, the programmable interface engine gets the data output request from the main processor, accesses the storage unit according to the data output request, and obtains the data corresponding to the data output request from the storage unit. The I2C code, execute the I2C code, thereby programming into the I2C engine matching the I2C interface protocol, the I2C engine will simultaneously generate state information (for example: initial state, address state, data state, etc....

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Abstract

The present invention provides a micro-control device and an input / output system applied to the micro-control device, the input / output system includes an input / output interface and an interface management controller, and the interface management controller is coupled to the main processor and the The input / output interface; the interface management controller is configured to convert a data transmission request under a specific interface protocol into a specialized interface controller corresponding to the specific interface protocol, so as to control the input / output interface Carry out corresponding data transmission.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, in particular to a micro control device and an input / output system applied to the micro control device. Background technique [0002] MCU (Micro Control Unit, micro control unit), also known as SCM (Single Chip Microcomputer, single-chip microcomputer) or single-chip microcomputer, it is a computer CPU (Central Processing Unit, central processing unit), RAM (Random Access Memory, random Memory), ROM (Read-Only Memory, read-only memory), timer counter and various I / O (Input / Output, input / output interface) are integrated on a chip to form a chip-level micro-control device. On the basis of this hardware circuit, the data to be processed, calculation methods, steps, and operation commands are compiled into programs and stored in the internal or external memory of the MCU. The MCU chip can automatically and continuously fetch and execute from the memory during operation. [0003] With the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/40G06F13/42G06F13/20
CPCG06F13/20G06F13/4068G06F13/4282G06F2213/0016
Inventor 汪泳江喻学艺刘速韩伟
Owner 旋智电子科技(上海)有限公司