DM12232C液晶模塊
一.基本特征
1. 顯示特性
(1) STN 正視反射模式;
(2) 顯示顏色:綠底蘭字或藍底白字;
(3) 顯示角度:6點鐘直視;
(4) 驅(qū)動方式:1/32 Duty,1/6 Bias
2．機械特性
(1) 外觀尺寸:見外觀圖;
(2) 電陣:122×32點;
(3) 點尺寸:0.36(W)×0.41(H) (MM);
(4) 點間距:0.40(W)×0.45(H) (MM)
3.引腳特性：
管腳號 |
管腳名稱 |
LEVER |
管腳功能描述 |
1 |
VDD |
+3∽5V |
電源電壓 |
2 |
VSS |
0V |
電源地 |
3 |
V0 |
0∽+5V OR 0∽-5V |
LCD外接驅(qū)動負電壓 當VDD=+3V時,VLCD接0∽-5V負電壓 |
4 |
RES |
H/L |
復(fù)位信號(低電平有效) |
5 |
E1 |
H/L |
讀寫使能信號 |
6 |
E2 |
H/L |
讀寫使能信號) |
7 |
R/W |
H/L |
讀寫選擇信號 |
8 |
A0 |
H/L |
D/I=“H”，表示DB7～DB0為顯示數(shù)據(jù) D/I=“L”，表示DB7～DB0為顯示指令數(shù)據(jù) |
9 |
DB0 |
H/L |
數(shù)據(jù)線 |
10 |
DB1 |
H/L |
數(shù)據(jù)線 |
11 |
DB2 |
H/L |
數(shù)據(jù)線 |
12 |
DB3 |
H/L |
數(shù)據(jù)線 |
13 |
DB4 |
H/L |
數(shù)據(jù)線 |
14 |
DB5 |
H/L |
數(shù)據(jù)線 |
15 |
DB6 |
H/L |
數(shù)據(jù)線 |
16 |
DB7 |
H/L |
數(shù)據(jù)線 |
17 |
LED+ |
-- |
LED(+5V)或EL背光源 |
18 |
LED- |
-- |
LED(0V)或EL背光源 |
二.限定參數(shù):
Item |
Symbol |
Standard Value |
Unit |
Condition |
Power supply voltage |
VDD |
0~+7.0 |
V |
|
LCD driving voltage |
VDD~VLCD |
0~+12.0 |
||
Input voltage |
VIN |
VND≤VIN≤VDD |
||
Operating temperature range |
Top |
0~+40 |
℃ |
No condition |
Storage temperature range |
Tst |
-10~+60 |
三. 直流特性：
（Ta=0~40℃，VDD=2.7~4.5V）
Item |
Symbol |
Standard Value |
Unit |
||
MIN |
TYP |
MAX |
|||
Power Supply |
VDD |
2.4 |
5.0 |
6.0 |
V |
LCD Driving Voltage |
VLCD |
-- |
0 |
-- |
V |
Input High Voltage |
VIH |
0.8VDD |
VDD |
V |
|
Output High Voltage |
VOH |
0.5VDD |
V |
||
Input Low Voltage |
VIL |
GND |
0.2VDD |
V |
|
Output Low Voltage |
VOL |
0.1VDD |
V |
||
Power Supply Current |
IDD |
-- |
240 |
uA |
|
I/0 Leak Current |
IL |
-3.0 |
3.0 |
uA |
|
Stand-by Current |
IDDQ |
0.05 |
10. |
uA |
|
四. 交流特性:
Signal |
Parameter |
Symbol |
MIN |
MAX |
Unit |
Condition |
System cycle time |
Tcyc |
2000 |
-- |
ns |
||
A0，/RW |
Address setup time |
Taw |
40 |
-- |
ns |
|
Address hold time |
Tah |
20 |
-- |
ns |
||
Data setup time |
Tds |
160 |
-- |
ns |
||
Data hold time |
Tdh |
20 |
-- |
ns |
||
D0~D7 |
Output disable time |
Tch |
20 |
120 |
ns |
CL=100p F |
Access time |
Tacc |
-- |
180 |
ns |
||
E |
Enable pulse width(Read) |
Tew |
200 |
-- |
||
Enable pulse width(Write) |
160 |
-- |
ns |
|||
Input wave width rise time |
Tr |
-- |
15 |
ns |
||
Bus Read /Write Operaion Sequence
五. 機械尺寸圖:
六. 原理圖:
七．DDRAM 地址表
Page |
Data |
Com No |
Drive |
||||
D0 |
： |
0 ： ： 15
|
Slave
|
||||
2 |
： |
： |
|||||
D7 |
122 X 16 PLXELS |
||||||
D0 |
： |
||||||
3 |
： |
： |
|||||
D7 |
122 X 16 PLXELS |
||||||
D0 |
： |
16 ： ： 31 |
Master |
||||
0 |
： |
： |
|||||
D7 |
122 X 16 PLXELS |
||||||
D0 |
： |
||||||
1 |
： |
： |
|||||
D7 |
122 X 16 PLXELS |
||||||
|
Column Addr |
ADC=0 |
00H····3C |
00H····3C |
|
||
|
Seg No |
0····60 |
0····60 |
|
|||
|
Drive |
Slave |
Master |
|
|||
八. 指令表:
INSTRCTION |
CODE |
FUNCTION |
|||||||||
R/W |
D/I |
D7 |
D6 |
D5 |
D4 |
D3 |
D2 |
D1 |
D0 |
||
DISPLAY ON/OFF |
0 |
0 |
1 |
0 |
1 |
0 |
1 |
1 |
1 |
1/0 |
Switch the entire display ON or OFF，regardless of the display RAM’s Data or the internal status. 1: ON 0: OFF |
Display Start Line |
0 |
0 |
1 |
1 |
0 |
Display start Line (0····31) |
Determines the line of RAM data to be displayed at the display’s top line (COM0) |
||||
Page Address set |
0 |
0 |
1 |
0 |
1 |
1 |
1 |
0 |
PAGE: (0~3) |
Sets the page of the Display in the Address register(X address) |
|
Column (seg) Address set |
0 |
0 |
0 |
Column address(0~79) |
Sets the column of the Display in the column address register(Y address) |
||||||
|
Status Read |
1 |
0 |
B u s y |
A D C |
ON / OFF |
R S T |
0 |
0 |
0 |
0 |
Read status Busy 1:insternal operation 0:Ready ADC 1:Rightward output 0:Leftward RST 1:Reseting 0:Normal ON/OFF 1:Display off 0:Display on |
Write Display Data |
0 |
1 |
Write data |
Writes the data on the Data bus to RAM |
|||||||
Read Display Data |
1 |
1 |
Read data |
Reads data from the Display RAM onto the Data BUS |
|||||||
|
ADC Select |
0 |
0 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0/1 |
Determine the clockwise or Counterclockwise reading of the display Data RAM 0: Clockwise 1: Counterclockwise |
|
Static Drive ON/OFF |
0 |
0 |
1 |
0 |
1 |
0 |
0 |
1 |
0 |
0/1 |
Select the dynamic or static Driving. 1:Static driving 0: Dynamic driving |
Duty Ratio Select |
0 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
0/1 |
Select the duty ratio 1:1/32 duty 0:1/16 duty |
Read Modify Write |
0 |
0 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
Increment the column Address register when writing. But no-change when reading. |
End |
0 |
0 |
1 |
1 |
1 |
0 |
1 |
1 |
1 |
0 |
Release from the Read Modify Write Mode. |
|
Reset |
0 |
0 |
1 |
1 |
1 |
0 |
0 |
0 |
1 |
0 |
Set the Display Start Line Register to 1st line, column Address count to 0 and Page Add. Resister to 0. |
Power Save(dual command) |
0 0 |
0 0 |
0 0 |
1 1 |
0 0 |
1 1 |
0 0 |
1 1 |
1 0 |
0 1 |
Set the power save mode by selecting display off and static driving on |
九．應(yīng)用舉例
12232與單片機8031的一種接口如圖5所示：（VDD=+5V）
利用圖5舉例介紹編程實例
ORG 0100H
INITM：MOV A，#0E2H ；RESET
LCALL OUTMI
LCALL OUTSI
MOV A，#0AEH ；OFF DISPLAY
LCALL OUTMI
LCALL OUTSI
MOV A，#0A4H ；OFFSTATIC DRIVE
LCALL OUTMI
LCALL OUTSI
MOV A，#0A9H ；SELECT 1/32 DUTY
LCALL OUTMI
LCALL OUTSI
MOV A，#0A0H ；ADC SELECT RIGHTWARS OUTPUT
LCALL OUTMI
LCALL OUTSI
MOV A，#0EEH ；READ MODIFY WRITE OFF
LCALL OUTMI
LCALL OUTSI
MOV A，#00H ；COLUMN ADDRESS SET
LCALL OUTMI
LCALL OUTSI
MOV A，#0C0H ；SET DISPLAY START LINE
LCALL OUTMI
LCALL OUTSI
MOV A，#0AFH ；ON DISPLAY
LCALL OUTMI
LCALL OUTSI
；DISPLAY “*”
MOV R2，#0B8H
DIS2：MOV A，R2
LCALL OUTMI
LCALL OUTSI
MOV A，#00H
LCALL OUTMI
LCALL OUTSI
MOV R1，#1FH
DIS1：MOV A，#55H
LCALL OUTMI
LCALL OUTSI
MOV A，#0AAH
LCALL OUTMI
LCALL OUTSI
DJNZ R1，DIS1
INC R2
CJNE R2，#0BCH，DIS2
LCALL MS40
LCALL MS40
LCALL MS40
LCALL MS40
MOV A，#0AFH
；DISPLAY“橫條”
MOV R2，#0B8H
DIS3：MOV A，R2
LCALL OUTMI
LCALL OUTSI
MOV A，#00H
LCALL OUTMI
LCALL OUTSI
MOV R1，#3DH
DIS4：MOV A，#55H
LCALL OUTMD
LCALL OUTSD
DJNZ R1 ，DIS4
INC R2
CJIE R2，#0BCH，DIS3
LCALL MS40
LCALL MS40
LCALL MS40
LCALL MS40
MOV A，#0AFH
LCALL OUTMI
LCALL OUTSI
；DISPLAY“豎條”
MOV R2，#0B8H
DIS5：MOV A，R2
LCALL OUTMI
LCALL OUTSI
MOV A，#00H
LCALL OUTMI
LCALL OUTSI
MOV R1，#1EH
DIS6：MOV A，#00H
LCALL OUTMI
LCALL OUTSI
MOV A，#0FFH
LCALL OUTMI
LCALL OUTSI
DJNZ R1，DIS6
MOV A，#3CH
LCALL OUTMI
LCALL OUTSI
MOV A，#00H
LCALL OUTMI
LCALL OUTSI
INC R2
CJNE R2，#0BCH，DIS5
LCALL MS40
LCALL MS40
LCALL MS40
LCALL MS40
MOV A，#0AFH
；DISPLAY漢字“兩只黃鸝鳴翠柳 一行白鷺上青天”
INITMC：MOV DPTR，#CHINESE
MOV R1 #00H
MOV B，#B8H
DISPWORDM：PUSH B
MOV A，B
LCALL OUTMI
LCALL OUTST
MOV A，#00H
LCALL OUTMI
MOV R2 #7AH
DISPWORD1：MOV A，R1
MOVC A，@A+DPTR
LCALL OUTMD
INC DPTR
DEC R2
CJNE R2，#3DH，DISPWORD1
MOV A，#00H
LCALL OUTST
DISPWORD2：MOV A，R1
MOVC A，@A+DPTR
LCALL OUTSD
INC DPTR
DJNZ R2，DISPWORD2
MOV R1，#00H
POP B
INC B
MOV A，B
CINZ A，#0BCH，DISPWORDM
LCALL MS40
LCALL MS40
LCALL MS40
LCALL MS40
AJMP INITM
MS40： MOV R7，#0E8H
MS2： MOV R6，#0FFH
MS1： DJNA R6，MS1
DJNZ R7，MS2
RET
；OUT INSTRCTION TO MASTER 6450
OUTMI：PUSH DPH
PUSH DPL
MOV DPTR，#6000H
MOVX @DPTR，A
POP DPL
POP DPH
RET
；OUT INSRCTION TO SLAVE 6450
OUTSI：PUSH DPH
PUSH DPL
MOV DPTR，#5000H
MOVX @DPTR，A
POP DPL
POP DPH
RET
；OUT DATA TO MASTER 6450
OUTMD：PUSH DPH
PUSH DPL
MOV DPTR，#0E000H
MOVX @DPTR，A
POP DPL
POP DPH
RET
；OUT DATA TO SLAVE 6450
OUTSD：PUSH DPH
PUSH DPL
MOV DPTR，#0D000H
MOVX @DPTR，A
POP DPL
POP DPH
RET
CHINESE：；（PAGE0）
DB 00H,00H
DB 00H,80H,80H,80H,80H,80H,80H,80H,80H,80H,80H,80H,80H,80H,0COH,80H,00
DB 00,00,10H,88H,0C4H,23H,40H,42H,42H,42H,42H,42H,0C2H,43H,62H,40H,00
DB 00,00,00,0F8H,08H,0CH,OAH,09H,08H,08H,08H,08H,08H,0FCH,08H,00,00
DB 00,80H,0EEH,8AH,OFAH,0AAH,0AEH,80H,24H,0E3H,0B6H,0AAH,0B6H,0E2H,20H,20H,00
DB 00,00,00,00,00,00,00,00,0FFH,20H,20H,20H,30H,20H,00,00,00
DB 00,40H,44H,54H,54H,54H,54H,54H,7FH,54H,54H,54H,54H,56H,44H,40H,00
DB 00,40H,42H,42H,42H,42H,42H,42H,0FEH,42H,42H,42H,42H,43H,62H,40H,00
0B 00
；（PAGE1）
DB 00,00
0B 00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00
DB 00,02H,01H,00,0FFH,00,00,00,00,00,40H,80H,7FH,00,00,00,00
DB 00,00,00,7FH,21H,21H,21H,21H,21H,21H,21H,21H,21H,7FH,00,00,00
DB 00,00,40H,40H,5H,52H,53H,56H,5AH,52H,5AH,56H,90H,90H,78H,10H,00
DB 00,40H,40H,40H,40H,40H,40H,40H,7FH,40H,40H,40H,40H,40H,60H,40H,00
DB 00,00,00,00,0FFH,15H,15H,15H,15H,15H,55H,95H,7FH,00,00,00,00
DB 00,80H,80H,40H,20H,10H.0CH,03H,00,03H,0CH,10H,20H,40H,0C0H,40H,00
DB 00
；（PAGE2）
DB 00,00
DB 00,02H,02H,0F2H,12H,12H,0FEH,12H,12H,12H,0FEH,12H,12H,0F2H,03H,02H,00
DB 00,00,00,00,0FCH,04H,04H,04H,04H,04H,04H,04H,0FEH,04H,00,00,00
DB 00,20H,20H,24H,24H,24H,3FH,24H,0E4H,24H,3FH,24H,24H,24H,30H,20H,00
DB 00,04H,0E4H,24H,0E4H,04H,0E4H,26H,0E4H,00,0FCH,06H,55H,84H,7CH,00,00
DB 00,00,0FCH,04H,04H,0FCH,04H,00,0FCH,06H,15H,44H,84H,7EH,04H,00,00
DB 00,00,40H,41H,55H,0C9H,41H,5FH,60H,41H,55H,0C9H,41H,5FH,40H,00,00
DB 00,10H,0D0H,0FFH,90H,10H,0FEH,02H,02H,0F9H,00,0FEH,02H,02H,0FFH,02H,00
DB 00
；（PAGE3）
DB 00,00
DB 00,00,00,0FFH,08H,04H,03H,14H,08H,04H,03H,44H,98H,7FH,00,00,00
DB 00,00,80H,40H,23H,11H,19H,01H,01H,01H,09H,11H,23H,60H,0C0H,00,00
DB 00,00,80H,80H,5FH,55H,35H,15H,1FH,15H,35H,35H,5FH,40H,80H,00,00
DB 00,00,7FH,02H,7FH,00,7FH,02H,7FH,10H,13H,12H,1AH,52H,82H,7EH,00
DB 00,00,OFH,04H,04H,0FH,10H,10H,13H,12H,12H,1AH,52H,82,7FH,02H,00
DB 00,08H,08H,0AH,09H,08H,09H,0AH,0FCH,0AH,09H,08H,09H,0AH,08H,08H,00
DB 00,01H,00,0FFH,00,01H,8FH,44H,22H,1FH,00,0FFH,08H,10H,0FH,00,00
DB 00
END