MA816 datasheet, PDF - EEWORLD Datasheet

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MA816: Description80c51 central processing unit; CategoryDevelopment board/suite/development tools; File Size1MB，100 Pages; ManufacturerMegawin; Websitehttp://www.megawin.com.tw/en-global

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MA816 Overview

80c51 central processing unit

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8051

内核-单片机

MA816

说明书

版本:

A1.0

This document contains information on a new product under development by Megawin. Megawin reserves the right to change or

discontinue this product without notice.



2014/02 version A1.0

目½

功½

....................................................................................................................3

目½

....................................................................................................................5

概述

.............................................................................................................9

方框图

.......................................................................................................10

特殊功½寄存器

SFR .................................................................................11

3.1. SFR

映射表

...................................................................................................................... 11

3.2. SFR

½分配

...................................................................................................................... 12

3.3. SFR

内存分页

.................................................................................................................. 13

引脚

...........................................................................................................14

4.1.

封装

.................................................................................................................................. 14

4.2.

引脚定义

........................................................................................................................... 15

系统时钟

....................................................................................................16

5.1.

时钟结构图

....................................................................................................................... 16

5.2.

时钟寄存器

....................................................................................................................... 16

5.3.

时钟示例代码

.................................................................................................................... 18

8051 CPU

功½描述

..................................................................................19

6.1. CPU

寄存器

..................................................................................................................... 19

6.2. CPU

时序

......................................................................................................................... 19

6.3. CPU

寻址方式

.................................................................................................................. 20

存储器结构

................................................................................................21

7.1.

7.2.

7.3.

7.4.

片上程序存储器

................................................................................................................ 21

片上数据存储器

RAM ....................................................................................................... 22

片上扩展

RAM (XRAM) ..................................................................................................... 22

关于

C51

编译器的声明识别符

.......................................................................................... 23

双数据指针寄存器

(DPTR) ........................................................................24

I/O

结构

....................................................................................................25

9.1. IO

配½

............................................................................................................................ 25

9.1.1.

准双向口

..................................................................................................................... 25

9.1.2.

推½输出

..................................................................................................................... 25

9.1.3.

仅输入(高阻输入)

........................................................................................................ 26

9.1.4.

开漏集输出

................................................................................................................. 26

9.2. I/O

端口寄存器

................................................................................................................. 27

9.2.1.

端口

0 ........................................................................................................................ 28

9.2.2.

端口

1 ........................................................................................................................ 28

9.2.3.

端口

2 ........................................................................................................................ 28

9.2.4.

端口

3 ........................................................................................................................ 29

9.2.5.

端口

4 ........................................................................................................................ 29

9.2.6.

端口

5 ........................................................................................................................ 30

9.2.7.

端口

6 ........................................................................................................................ 30

9.2.8.

端口

7 ........................................................................................................................ 31

9.3. GPIO

示例代码

................................................................................................................ 32

10.

中断

...........................................................................................................34

10.1.

中断结构

........................................................................................................................... 34

10.2.

中断寄存器

....................................................................................................................... 35

10.3.

中断示例代码

.................................................................................................................... 41

MEGAWIN

MA816

说明书

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Shortcut: L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 LA LB LC LD LE LF LG LH LI LJ LK LL LM LN LO LP LQ LR LS LT LU LV LW LX LY LZ M0 M1 M2 M3 M4 M5 M6 M7 M8 M9 MA MB MC MD ME MF MG MH MI MJ MK ML MM MN MO MP MQ MR MS MT MU MV MW MX MY MZ N0 N1 N2 N3 N4 N5 N6 N7 N8 NA NB NC ND NE NF NG NH NI NJ NK NL NM NN NO NP NQ NR NS NT NU NV NX NZ O0 O1 O2 O3 OA OB OC OD OE OF OG OH OI OJ OK OL OM ON OP OQ OR OS OT OV OX OY OZ P0 P1 P2 P3 P4 P5 P6 P7 P8 P9 PA PB PC PD PE PF PG PH PI PJ PK PL PM PN PO PP PQ PR PS PT PU PV PW PX PY PZ Q1 Q2 Q3 Q4 Q5 Q6 Q8 Q9 QA QB QC QE QF QG QH QK QL QM QP QR QS QT QV QW QX QY R0 R1 R2 R3 R4 R5 R6 R7 R8 R9 RA RB RC RD RE RF RG RH RI RJ RK RL RM RN RO RP RQ RR RS RT RU RV RW RX RY RZ

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