单片机引脚
芯片存储区
用户数据存储区
|
00H |
|
|
|
|
|
|
|
|
0组 |
|
01H |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1组 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2组 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3组 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1FH |
|
|
|
|
|
|
|
|
|
|
20H |
07H |
|
|
|
|
|
|
00H |
位寻址区 |
|
|
|
|
|
|
|
|
|
08H |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2FH |
7FH |
|
|
|
|
|
|
78H |
|
|
30H |
|
|
|
|
|
|
|
|
用户存储区 |
|
…… |
|
|
|
|
|
|
|
|
|
|
7FH |
|
|
|
|
|
|
|
|
|
|
80H |
|
|
|
|
|
|
|
|
|
|
81H |
|
|
|
|
|
|
|
|
|
|
82H |
|
|
|
|
|
|
|
|
|
|
83H |
|
|
|
|
|
|
|
|
|
|
84H |
|
|
|
|
|
|
|
|
|
|
85H |
|
|
|
|
|
|
|
|
|
|
86H |
|
|
|
|
|
|
|
|
|
|
87H |
|
|
|
|
|
|
|
|
|
|
88H |
8FH |
8EH |
8DH |
8CH |
8BH |
8AH |
89H |
88H |
定时器/计数器工作方式寄存器TCON |
|
TF1 |
TR1 |
TF0 |
TR0 |
IE1 |
IT1 |
IE0 |
IT0 |
TF1：定时器1溢出标志位 TR1：定时器1运行控制位 |
|
|
89H |
|
|
|
|
|
|
|
|
定时器/计数器工作方式寄存器TMOD |
|
GATE |
C//T |
M1 |
M0 |
GATE |
C//T |
M1 |
M0 |
|
|
|
8AH |
|
|
|
|
|
|
|
|
|
|
8BH |
|
|
|
|
|
|
|
|
|
|
8CH |
|
|
|
|
|
|
|
|
|
|
8DH |
|
|
|
|
|
|
|
|
|
|
8EH |
|
|
|
|
|
|
|
|
|
|
8FH |
|
|
|
|
|
|
|
|
|
|
90H |
|
|
|
|
|
|
|
|
|
|
91H |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
A8H |
|
|
|
|
|
|
|
|
中断允许寄存器IE |
|
EA |
|
ET2 |
ES |
ET1 |
EX1 |
ET0 |
EX0 |
EA：全局中断允许位 |
|
|
|
|
|
|
|
|
|
|
|
|
|
B8H |
|
|
|
BCH |
BBH |
BAH |
B9H |
B8H |
中断优先级寄存器IP |
|
|
|
|
|
PS |
PT1 |
PX1 |
PT0 |
PX0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ROM存储区
|
0000H |
7 |
|
|
|
|
|
|
0 |
系统复位，PC指向此处 |
|
…… |
|
|
|
|
|
|
|
|
|
|
0003H |
|
|
|
|
|
|
|
|
外部中断0入口 |
|
…… |
|
|
|
|
|
|
|
|
|
|
000BH |
|
|
|
|
|
|
|
|
T0溢出中断入口 |
|
…… |
|
|
|
|
|
|
|
|
|
|
0013H |
|
|
|
|
|
|
|
|
外部中断1入口 |
|
…… |
|
|
|
|
|
|
|
|
|
|
001BH |
|
|
|
|
|
|
|
|
T1溢出中断入口 |
|
…… |
|
|
|
|
|
|
|
|
|
|
0023H |
|
|
|
|
|
|
|
|
串口中断入口 |
|
…… |
|
|
|
|
|
|
|
|
|
|
0FFFH |
|
|
|
|
|
|
|
|
|
P3第二功能
