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What is MA801?

This electronic component, produced by the manufacturer "Megawin", performs the same function as "8051 - SCM".


MA801 Datasheet PDF - Megawin

Part Number MA801
Description 8051 - SCM
Manufacturers Megawin 
Logo Megawin Logo 


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8051 内核-单片机
MA801/MA802
说明书
北京菱电科技有限公司
TEL:010-82674978
版本: A9
This document contains information on a new product under development by Megawin. Megawin reserves the right to change or
discontinue this product without notice.
Megawin Technology Co., Ltd. 2005 All rights reserved.
2012/11 version A9

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MA801 equivalent
目录
特性 .................................................................................................................... 3
目录 .................................................................................................................... 5
1. 概述 ............................................................................................................... 9
2. 方框图.......................................................................................................... 10
3. 特殊功能寄存器............................................................................................ 11
3.1. SFR 地址表 ..................................................................................................................11
3.2. SFR 位分配表...............................................................................................................12
4. 引脚结构 ...................................................................................................... 14
4.1. 封装指南.......................................................................................................................14
4.2. 引脚描述.......................................................................................................................15
5. 8051 CPU 功能描述..................................................................................... 16
5.1. CPU 寄存器 ..................................................................................................................16
5.2. CPU 时序......................................................................................................................17
5.3. CPU 寻址模式 ..............................................................................................................18
6. 存储器组织................................................................................................... 19
6.1. 片上程序存储器 ............................................................................................................19
6.2. 片上数据存储器 ............................................................................................................20
6.3. 关于 C51 编译器的声明标识符 ......................................................................................22
7. 数据指针寄存器(DPTR)................................................................................ 23
8. 系统时钟 ...................................................................................................... 24
8.1. 时钟结构.......................................................................................................................24
8.2. 时钟寄存器 ...................................................................................................................25
8.3. 时钟示例代码................................................................................................................26
9. 看门狗定时器 (WDT).................................................................................... 27
9.1. WDT 结构.....................................................................................................................27
9.2. WDT 在掉电模式和空闲模式期间..................................................................................27
9.3. WDT 寄存器 .................................................................................................................28
9.4. WDT 硬件选项..............................................................................................................29
9.5. WDT 示例代码 ..............................................................................................................30
10.系统复位 ...................................................................................................... 31
10.1. 复位源 ..........................................................................................................................31
10.2. 上电复位.......................................................................................................................31
10.3. 外部复位.......................................................................................................................32
10.4. 软件复位.......................................................................................................................32
10.5. 低电压复位 ...................................................................................................................32
10.6. WDT 复位.....................................................................................................................33
10.7. 非法地址复位................................................................................................................33
10.8. 复位示例代码................................................................................................................34
11.电源管理 ...................................................................................................... 35
11.1. 低电压检测器................................................................................................................35
11.2. 省电模式.......................................................................................................................36
11.3. 空闲模式.......................................................................................................................36
MEGAWIN
MA801_MA802 说明书
5


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