8031单片机资料 (介绍详细)

The generic 8031 architecture sports a Harvard architecture, which contains two separate buses for both program and data. So, it has two distinctive memory spaces of 64K X 8 size for both program and data. It is based on an 8 bit central processing unit with an 8 bit Accumulator and another 8 bit B register as main processing blocks. Other portions of the architecture include few 8 bit and 16 bit registers and 8 bit memory locations.
Each 8031 device has some amount of data RAM built in the device for internal processing. This area is used for stack operations and temporary storage of data.
This base architecture is supported with onchip peripheral functions like I/O ports, timers/counters,versatile serial communication port. So it is clear that this 8031 architecture was designed to cater many real time embedded needs.The following list gives the features of the 8031 architecture:

8031单片机是Intel公司生产的MCS-51系列单片机中的一种，除无片内ROM外，其余特性与MCS-51单片机基本一样。

    MCS-51单片机的引脚描述及片外总线结构

    一、芯片的引脚描述

    HMOS制造工艺的MCS-51单片机都采用40引脚的直插封装（DIP方式），制造工艺为CHMOS的80C51/80C31芯片除采用DIP封装方式外，还采用方型封装工艺，引脚排列如图。其中方型封装的CHMOS芯片有44只引脚，但其中4只引脚（标有NC的引脚1、12、23、34）是不使用的。在以后的讨论中，除有特殊说明以外，所述内容皆适用于CHMOS芯片。