单片机教案17-1.doc

无锡商业职业技术学院
教案
授课日期
2005年月日第周
授课班级
013861,2
授课形式
讲授●实验○实训○练习○测验○其他○
授课章节
名称
LCD显示
教学目的
LCD显示
教学重点
LCD显示
教学难点
LCD显示
更新、补充、删节内容
无
课外作业
习题3、习题4
课后体会
与建议
课主要内容或板书设计
Control and mand
Command
/RD
/WR
A0
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
Function
Display ON/OFF
1
0
0
1
0
1
0
1
1
1
0/1
Turns display on or off.
1 : ON , 0 : OFF
Display start line
1
0
0
1
1
0
Display start address ( 0 to 31 )
Specifies RAM line corresponding to top line of display..
Set page address
1
0
0
1
0
1
1
1
0
Page( 0 to 3 )
Sets display RAM page in page address register.
Set column (segment) address
1
0
0
0
Column address ( 0 to 79 )
Sets display RAM column address in column address register.
Read status
0
1
0
B
U
S
Y
A
D
C
O
N
/
O
F
F
R
E
S
E
T
0
0
0
0
Reads the following status:
BUSY 1: Busy,
0: Ready;
ADC 1: CW output,
0: CCW output;
ON/OFF 1: Display off,
0: Display on;
RESET 1: Being reset,
0: Normal
Write display data
1
0
1
Write Data
Write data from data bus into display RAM
Read display data
0
1
1
Read Data
Reads data from display RAM on